Bolthole Index

Mono County, California

Building permits, zoning and land rules in Mono County, California

45Index Score / 100
#24 of 58 in California

Unincorporated Mono County, California requires building permits for new construction, remodeling, enlargement and some repairs or alterations1. Mono County administers zoning and septic permits in the unincorporated area23. Inside the Town of Mammoth Lakes, the town issues building permits, while septic matters remain with Mono County Environmental Health45.

At a glance

Building permit
Required for new construction, remodeling, enlargement and some repairs or alterations in unincorporated Mono County1
Zoning
Every unincorporated parcel has a land-use designation; lot size, setbacks, coverage and height vary by designation678910
Septic permit
Required before onsite wastewater construction begins11
RV living
Temporary construction use needs approval; confirm any permanent RV-residence proposal with Planning121314
Tiny home
A foundation-built tiny home can be permitted; a chassis unit is treated as an RV and faces land-use limits1516
Owner-builder
A qualifying owner may claim California's contractor-license exemption, but county permits and code review still apply1718
Well permit
Required for well construction, repair, modification or destruction19
Septic soils
Only 5.1% of soils lack severe limits for a conventional drain field20

Who to call

Building permits

Mono County Community Development Department - Building Division

Building permits, plan review and inspections in unincorporated Mono County

760-924-1800

commdev@mono.ca.gov

1290 Tavern Road, Ste 138, Mammoth Lakes, CA 93546

Planning & zoning

Mono County Community Development Department - Planning Division

Zoning, land-use review and planning permits in unincorporated Mono County

760-924-1800

commdev@mono.ca.gov

1290 Tavern Road, Ste 138, Mammoth Lakes, CA 93546

Septic permits

Mono County Environmental Health - Onsite Wastewater Treatment Systems (OWTS) Program

OWTS permits, greywater systems and septic-system review

760-924-1830

1290 Tavern Road, Mammoth Lakes, CA 93546

Roads & driveways

Mono County Public Works Department - Engineering Division

Road and driveway design standards, grading permits and county-road encroachment

760-932-5440

74 North School Street, PO Box 457, Bridgeport, CA 93517

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

Going off-grid in Mono County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Mono County, California?

Unincorporated Mono County requires building permits for new construction, remodeling, renovation, enlargement and some repair or alteration work21. Cosmetic work such as painting, carpeting, wallpaper, cabinets and trim does not require a county building permit1. Mono County applies California building codes; its Design Standards page identifies the 2025 California Building Codes and Design Standards22. A narrow county exemption covers qualifying unoccupied agricultural shade-cloth or hoop-house structures without service systems, but zoning, setbacks and fire requirements still apply23. Inside the Town of Mammoth Lakes, the town issues building permits; septic matters stay with Mono County Environmental Health45.

Who issues Mono County building permits, and how do you reach them?

For an unincorporated parcel, start with the Mono County Community Development Department's Building Division at 1290 Tavern Road, Ste 138, Mammoth Lakes, CA 93546; call 760-924-1800 or email commdev@mono.ca.gov24. The same department's Planning Division handles zoning approval and land-use questions at that address and contact14. Mono County recommends a preapplication conference for planning projects; after submittal, the county may accept an application as complete or request more information within 30 days25. County building-permit review checks plans against applicable codes, and county representatives may enter the permitted property for inspections2627. We could not confirm a universal building-inspection schedule; ask the Building Division which inspections apply and call its inspection hotline at 760-924-18272824. For a new home, the county's owner guide allows move-in after construction is complete and a certificate of occupancy is issued29.

Does Mono County have zoning?

Mono County combines its General Plan and zoning rules for the unincorporated area; applicable community Area Plans and Specific Plans further govern development302. Minimum lot area varies by designation and water supply; lots using individual septic generally need 15,000 square feet with public water or 40,000 square feet with an individual well, subject to stated exceptions and water-quality rules31. Setbacks, lot coverage and height also vary by designation8910. Commercial (C) and Commercial Lodging (CL-M and CL-H) specify front/rear/side setbacks of 10/5/0 feet and a maximum building height of 35 feet, subject to additional provisions32333435. Construction subject to the State Minimum Fire Safe Regulations instead needs a 30-foot setback unless an Article 5 deviation applies36. ADUs may be permitted where single-family residences are allowed, but well- or septic-served ADUs need Environmental Health clearance37. We could not confirm a general minimum floor area for an ordinary dwelling; ask Planning about the proposed design3814.

How do septic permits work in Mono County?

Mono County Environmental Health administers septic permits for onsite wastewater systems in the unincorporated county3. The septic permit must be issued before construction begins and covers construction, reconstruction, repair, modification, destruction or abandonment of an onsite wastewater or graywater system1139. In unincorporated Mono County, a wastewater-producing structure must connect to public sewer when one exists within 200 feet; an onsite system is then prohibited40. Where sewer is unavailable, an onsite system must meet county requirements; portable toilets are not a permanent solution, holding tanks cannot replace a residential system, and unconventional toilets in permanent structures still require a standard toilet connected to a permitted system41. Seepage pits and cesspools are prohibited in Mono County42. Only 5.1% of county soils lack severe limitations for a conventional drain field, so evaluate the site before fixing the house location20. Schedule installation inspections at least 2 working days ahead and before covering components43.

Can you live in an RV or tiny home on land in Mono County?

Unincorporated Mono County allows an RV on vacant land during construction of a main building for no more than 1 year unless the Director Review permit is renewed annually after notice to neighboring owners; Environmental Health must approve sanitation12. In designated hazard zones, temporary RV use may be allowed for no more than 6 months of each year during the authorized period with Director Review; temporary agricultural RV use on parcels of at least 20 acres is exempt from Director Review12. A foundation-built tiny home needs a county building permit and California Building Code compliance, along with applicable land-use, wastewater and fire-safety requirements15. A chassis-based tiny home is treated as an RV or trailer; do not assume it qualifies as a permanent dwelling16. The 2025 Rural Resort rules describe RV parks as temporary or seasonal, so ask Mono County Planning to confirm any permanent RV-residence proposal before buying1314. Manufactured homes are a separate option: Rural Mobile Home allows mobile homes as single-family dwellings, and Rural Residential allows manufactured homes subject to age and development criteria44.

How do you build a home in Mono County, step by step?

  1. Confirm that the parcel is in unincorporated Mono County rather than the Town of Mammoth Lakes24.
  1. Ask Planning to verify the zoning designation, minimum lot area, setbacks, lot coverage, height and dwelling type31891014.
  1. Secure water and wastewater approvals. A Mono County well permit is required for well construction, repair, modification or destruction19. Obtain the septic permit before onsite wastewater work begins11.
  1. Resolve access. A driveway along a county-maintained road generally requires a county encroachment permit, while a state-highway driveway permit goes through Caltrans4546.
  1. Submit the building-permit package and confirm current fees with the Building Division2147.
  1. If acting as owner-builder, identify the applicable contractor-license exemption and return the signed county acknowledgment before building-permit issuance; owner-performed work must not be intended for sale, and owner-builder status does not remove building permits or code requirements1718.
  1. Arrange required building inspections, the septic inspection before components are covered, and the new home's certificate of occupancy before moving in284329.

What should you check before buying land in Mono County?

Start with jurisdiction, zoning, legal access, water and wastewater feasibility. A private well requires a Mono County well permit, while septic layout can be difficult because only 5.1% of county soils lack severe limitations for a conventional drain field1920. Confirm that the recorded parcel is legal: Mono County regulates subdivision maps in the unincorporated area, and its Planning Commission reviews land divisions into 4 or fewer parcels48. Terrain also matters because 30.8% of Mono County land has a slope of 15% or less, so verify that usable area can hold the house, access and reserve septic field49. Mono County averages 15.2 inches of precipitation a year, and severe drought occurs in about 42.4% of years, making documented water supply more valuable than assumptions based on nearby wells5051. Ask Planning to check mapped flood hazards before closing because we could not confirm the operative floodplain-development requirements14.

Watch-outs

  • Inside the Town of Mammoth Lakes, building permits come from the town; septic matters remain with Mono County Environmental Health45.
  • In unincorporated Mono County, an onsite wastewater system is prohibited when public sewer exists within 200 feet of a wastewater-producing structure; sewer connection is required40.
  • Residential driveways along county-maintained roads typically require an encroachment permit, and most new roads or driveways also require a grading permit4552.
  • New construction subject to the State Minimum Fire Safe Regulations must meet a 30-foot setback regardless of land-use designation or parcel size unless it qualifies for an Article 5 deviation53.
  • California owner-builder status does not authorize an owner to personally perform C-57 well-drilling work54.
  • We could not confirm the county's floodplain-development permit rule; ask Mono County Planning to check the parcel before purchase14.

Sources

  1. Building, quoted and re-checked
  2. General Plan, quoted and re-checked
  3. Onsite Wastewater Treatment Systems (OWTS), quoted and re-checked
  4. Town of Mammoth Lakes: Building Permits (Mono County), quoted and re-checked
  5. Town of Mammoth Lakes: Environmental Health (Mono County), quoted and re-checked
  6. General Plan, quoted and re-checked
  7. Land Use Element – 2025, quoted and re-checked
  8. Mono County General Plan — Land Use Element – 2025, quoted and re-checked
  9. Mono County General Plan — Land Use Element – 2025, quoted and re-checked
  10. Mono County General Plan — Land Use Element – 2025, quoted and re-checked
  11. Onsite Wastewater Treatment Systems (OWTS), quoted and re-checked
  12. Mono County General Plan — Land Use Element (2025), quoted and re-checked
  13. Mono County General Plan — Land Use Element (2025), quoted and re-checked
  14. Mono County Community Development Department - Planning Division (monocounty.ca.gov)
  15. Mono County Housing Policy Programs, December 7, 2021, quoted and re-checked
  16. Mono County Housing Policy Programs, December 7, 2021, quoted and re-checked
  17. California Business and Professions Code section 7044, quoted and re-checked
  18. 2026 Building Permit for New Construction, quoted and re-checked
  19. Well Permit Application, quoted and re-checked
  20. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  21. Building, quoted and re-checked
  22. Mono County Housing Policy Programs, December 7, 2021, quoted and re-checked
  23. Policy and Procedure for Unoccupied Agriculture Buildings, quoted and re-checked
  24. Mono County Community Development Department - Building Division (monocounty.ca.gov)
  25. Planning Permit Process, quoted and re-checked
  26. Building, quoted and re-checked
  27. Building, quoted and re-checked
  28. Building, quoted and re-checked
  29. Mono County Building 101, quoted and re-checked
  30. General Plan, quoted and re-checked
  31. Mono County General Plan — Land Use Element – 2025, quoted and re-checked
  32. Mono County Planning Commission Packet, May 15, 2025, quoted and re-checked
  33. Mono County Planning Commission Packet, May 15, 2025, quoted and re-checked
  34. Mono County Planning Commission Packet, May 15, 2025, quoted and re-checked
  35. Mono County Planning Commission Packet, May 15, 2025, quoted and re-checked
  36. General Plan, quoted and re-checked
  37. Mono County General Plan Land Use Element – 2025, quoted and re-checked
  38. Mono County General Plan — Land Use Element (2025), quoted and re-checked
  39. Mono County OWTS Ordinance, quoted and re-checked
  40. Mono County OWTS Ordinance, quoted and re-checked
  41. Mono County Local Agency Management Program, quoted and re-checked
  42. Onsite Wastewater Treatment Systems (OWTS), quoted and re-checked
  43. Mono County OWTS Ordinance, quoted and re-checked
  44. Mono County General Plan Land Use Element – 2025, quoted and re-checked
  45. Encroachment Permit Package, quoted and re-checked
  46. Encroachment Permits | Caltrans (California statewide rule), quoted and re-checked
  47. Fees, quoted and re-checked
  48. Parcel Map: Tentative & Modification, quoted and re-checked
  49. Share of land at 15% slope or less: Bolthole Index county data
  50. Annual precipitation: Bolthole Index county data
  51. Share of years in severe drought: Bolthole Index county data
  52. Mono County Public Works Department - Engineering Division (monocounty.ca.gov)
  53. Building Permit Applications, quoted and re-checked
  54. Owner-Builder Overview, quoted and re-checked

Written October 10, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Found land here? Start a Property Hunt →

Compared with neighboring counties

Like all 6 of its neighbors, Mono County has countywide zoning.

RuleMono CountyTuolumne CountyAlpine CountyMariposa CountyMadera CountyCalaveras CountyEl Dorado County
Building permitRequiredRequiredRequiredRequiredLimitedRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Env. HealthCounty Env. Health Div.County Health Dept.County Env. Health Div.County Env. Health Div.County Env. Management AgencyCounty Env. Management Dept.

County locator

Mono County in California

45
County map
Mono County highlighted among the California counties · colored by Index score

How Mono County scores

Seclusion82100% ev.
Self-Sufficiency28100% ev.
Admin Boringness40100% ev.
Durability25100% ev.
Property Autonomy56100% ev.
Carry Cost66100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$765kTypical home
0.8%Property tax
$3,138Land / acre
15.2"Annual rain
42.4% of yrsSevere drought
1.3 / yr (+1.2)Mid-century 100°F days
39.4 daysMid-century dry spell
1.85" (+5.4%)Mid-century 1-day rain
1.1×Wildfire change factor
100%Forward climate coverage
$1,925Home insurance / yr
6% / yrInsurance growth
1.85%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,228Radius comparison (15 mi)
4.3People / sq mi
90.3%Federal land
30.8%Land at 15% slope or less
5.1%Soils rated "not limited" for septic (strict USDA rating)
90,199 acWorkable land screen
25.4%Wooded land
23.6 tonsBiomass / forest ac
44.7°FAvg temp

Scout Mono County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Mono County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Cities and towns in Mono County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Answers from the rulebook for Mono County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Mono County rules

  • Building permitRequired

    New construction, remodeling, renovation, enlargement, and some repair or alteration work in unincorporated Mono County

    • Cosmetic projects such as painting, carpeting, adding wallpaper, cabinets, and trim work do not require a permit.
    • The County does not oversee or permit work within the Town of Mammoth Lakes.
    • The County's permit application page identifies separate complete, minor, and over-the-counter application pathways depending on project type.
    “The Mono County Building Division is responsible for the oversight and issuance of all building permits and associated work completed in the unincorporated areas of Mono County. We do not oversee or permit work within the Town of Mammoth Lakes. [...] Permits are required when there is new construction to a building as well as some repair work or alterations to an existing structure. In addition, when a building is to be remodeled, renovated or enlarged, a permit will be required.”
    One more reviewed finding on this topic
    • Required — New construction, remodeling, renovation, enlargement, and some repair or alteration work on buildings in unincorporated Mono County.
      “Permits are required when there is new construction to a building as well as some repair work or alterations to an existing structure.”
  • Owner-builder exemptionAvailable (with conditions)

    Owner-builder permit applications handled by the Mono County Building Division in unincorporated Mono County.

    • The owner-builder declaration must identify the applicable Contractors' State License Law exemption.
    • Mono County will not issue the permit until the owner has read, initialed, signed, and returned the owner-builder acknowledgment form.
    • The owner remains legally and financially responsible for the construction activity.
    • This claim concerns contractor-licensing exemption and permit procedure; it does not waive building-permit, inspection, or code-compliance requirements.
    “We will not issue a building permit until you have read, initialed your understanding of each provision, signed, and returned this form to us at our official address indicated. An agent of the owner cannot execute this notice unless you, the property owner, obtain the prior approval of the permitting authority.”
  • Building code adoptedAdopted (with conditions)

    Building-code requirements administered through Mono County building permits in unincorporated Mono County.

    • Permits are required for new construction and for some repairs, alterations, remodeling, renovation, or enlargement.
    • Cosmetic projects such as painting, carpeting, wallpaper, cabinets, and trim work do not require a permit.
    • The cited page does not identify the current Title 24 code edition or complete local amendment package.
    “Building permits are mandated by state codes that regulate building, fire, mechanical, plumbing, electrical and other facets of construction. The building permit process provides a system to verify that plans comply with codes and the ability to investigate and examine work during construction.”
    One more reviewed finding on this topic
    • Adopted — California Building Code requirements, including the tiny-house appendix referenced by Mono County, for building work in unincorporated Mono County.
      “Completed. Tiny homes on a foundation are permittable under an appendix in the California Building Code, which Mono County has adopted.”
  • InspectionsLimited

    Construction work subject to the Mono County building-permit process in unincorporated Mono County.

    • Mono County states that the building-permit process provides the ability to investigate and examine work during construction.
    • The reviewed official county page does not enumerate inspection stages, scheduling deadlines, or trade-specific inspection requirements.
    • The Town of Mammoth Lakes is outside the Mono County Building Division's permitting oversight.
    “The building permit process provides a system to verify that plans comply with codes and the ability to investigate and examine work during construction.”
    2 more reviewed findings on this topic
    • Limited — Work performed under a Mono County building permit in unincorporated Mono County.
      “The signature on this document authorizes representatives of Mono County to enter the property noted on the issued building permit for inspection purposes”
    • Limited — Construction work subject to Mono County building permits in unincorporated Mono County
      “The building permit process provides a system to verify that plans comply with codes and the ability to investigate and examine work during construction. This process helps ensure a safe and quality final structure.”
  • Certificate of occupancyRequired

    Completed permitted construction projects in unincorporated Mono County before residential occupancy.

    • The official county guide states that the certificate is issued once construction is complete.
    • The guide describes the certificate in the context of a new home; applicability to every structure type was not separately enumerated.
    • The Town of Mammoth Lakes has a separate permitting authority.
    “Once the construction of the project is complete, a Certificate of Occupancy will be issued. This is the point at which the homeowner can borrow against the new home, and more importantly, move in.”
  • County-wide zoningPresent (with conditions)

    Mono County zoning and land-use controls in the unincorporated area.

    • The General Plan and Zoning Code are combined into one document.
    • The cited page describes the plan as applying to the unincorporated area; incorporated Town of Mammoth Lakes is separately administered.
    “Mono County is unique in that the General Plan and Zoning Code have been combined into one document. The purpose of the Mono County General Plan is to establish policies to guide decisions on future growth, development, and conservation of natural resources in the unincorporated area of the county.”
  • Local zoningVaries (with conditions)

    Countywide aggregate of local zoning and land-use controls in Mono County; the county aggregate includes county-administered planning controls and separate Town of Mammoth Lakes zoning.

    • This is an aggregate county claim and does not attribute the Town of Mammoth Lakes zoning blocks to Mono County.
    • The Mono County GIS source states that adopted specific plans apply to defined geographic regions.
    • The Town of Mammoth Lakes has separately defined zoning blocks, including Airport, Downtown, Industrial, Residential Multi-Family, Resort, and other districts.
    “This dataset depicts zoning blocks defined by the Town of Mammoth Lakes, CA.”
    3 more reviewed findings on this topic
    • Present (with conditions) — Land-use and zoning regulation in Mono County's unincorporated area.
      “Mono County is unique in that the General Plan and Zoning Code have been combined into one document. [...] in the unincorporated area of the county.”
    • Present (with conditions) — Unincorporated land in Mono County, subject to the Mono County General Plan and combined zoning regulations.
      “Mono County is unique in that the General Plan and Zoning Code have been combined into one document. The purpose of the Mono County General Plan is to establish policies to guide decisions on future growth, development, and conservation of natural resources in the unincorporated area of the county.”
    • Varies (with conditions) — Aggregate local zoning administration across Mono County: Mono County regulates the unincorporated area, while the Town of Mammoth Lakes is a separate local jurisdiction.
      “The Zoning Code for the Town of Mammoth Lakes (Municipal Code Title 17) was originally adopted in 1984 and has undergone a number of amendments since adoption. The Zoning Code establishes where residential, commercial, and other land uses may be located within town, what type of permit is required for each use, and what standards apply to new uses and development.”
  • Minimum dwelling sizeSpecified

    Single-room-occupancy facilities in the unincorporated area governed by Mono County's Land Use Element and Land Development Regulations.

    • The facility must provide six or more dwelling units.
    • Each SRO unit must have a minimum floor area of 150 square feet.
    • Each SRO unit may not exceed 400 square feet.
    • Units may have kitchen or bathroom facilities.
    • Units must be offered on a monthly basis or longer.
    • The source describes SROs as a land use similar to apartments and condominiums.

    minimum SRO unit floor area: >= 150 square feet · maximum SRO unit floor area: <= 400 square feet · minimum number of dwelling units in facility: >= 6 units · offering period: monthly basis or longer

    ““Single room occupancy” (SRO) means a facility providing six or more dwelling units where each unit has a minimum floor area of one hundred fifty (150) square feet and a maximum floor area of four hundred (400) square feet. These dwelling units may have kitchen or bathroom facilities and shall be offered on a monthly basis or longer. SROs are a land use similar to apartments and condominiums.”
  • Minimum lot sizeDistrict specific (with conditions)

    Residential development and land division in unincorporated Mono County, subject to the applicable General Plan land-use designation and onsite wastewater requirements.

    • The SFR designation has a 7,500-square-foot minimum lot size and a 5-acre minimum district area.
    • The ER designation has a 1-acre minimum parcel size and a 5-acre minimum district area.
    • Lots requiring individual septic systems are subject to minimum dimensions determined by the Lahontan Regional Water Quality Control Board.
    • Mono County Land Use Element section 04.080 states that land divisions must comply with Mono County land-division requirements.
    • For an individual OWTS on a lot served by a public water system, 15,000 square feet is required, subject to the separate-parcel leach-field exception.

    SFR minimum lot size: 7500 square feet (Applicable to the SFR land-use designation.) · ER minimum parcel size: 1 acre (Applicable to the ER land-use designation.) · minimum district area: 5 acres (Stated for both SFR and ER designations.) · individual OWTS with public water system minimum lot size: 15000 square feet (A smaller lot may be allowed where the leach field serving the lot is on a separate parcel dedicated for that use.)

    “D. Minimum lot sizes for On-Site Wastewater Treatment Systems (OWTS) Minimum lot sizes shall be as follows: notwithstanding the fact that lesser lot sizes may be indicated in the respective designations: 1. If an individual OWTS is proposed for a lot that is served by a Public Water System (PWS), then 15,000 square feet is required. Lots served by a PWS, and where the leach field serving these lots is located on a separate parcel dedicated for such use (centralized leach field or treatment), may have lot sizes smaller than 15,000 square feet.”
    One more reviewed finding on this topic
    • District specific (with conditions) — New parcels and development in unincorporated Mono County; minimum lot area varies by land-use designation and may be superseded or increased by onsite-wastewater and water-supply requirements.
      “minimum lot area required for the designation”
  • SetbacksDistrict specific (with conditions)

    Commercial Lodging Moderate (CL-M) and High (CL-H) land-use designations in unincorporated Mono County.

    • If the land-use designation and existing uses of abutting properties are compatible, a minimum district area of two acres may be considered.
    • Section 04.120 provides other setback requirements.
    • The source states that state Minimum Fire Safe Regulations supersede Mono County regulations and include 30-foot setbacks for all parcels regardless of land-use designation and parcel size unless deviation criteria in Article 5 are met.
    • Lots requiring individual septic systems are subject to minimum dimensions determined by the Lahontan Regional Water Quality Control Board.

    front setback: 10 ft (See Section 04.120 for other provisions.) · rear setback: 5 ft (See Section 04.120 for other provisions.) · side setback: 0 ft (See Section 04.120 for other provisions.) · minimum district area CL-M: 3 acres (If the land-use designation and existing uses of abutting properties are compatible, a minimum district area of two acres may be considered.) · minimum district area CL-H: 5 acres (If the land-use designation and existing uses of abutting properties are compatible, a minimum district area of two acres may be considered.)

    “Minimum Setbacks: Front: 10’ Rear: 5’ Side: 0’ See Section 04.120 for other provisions.”
    3 more reviewed findings on this topic
    • Specified — New construction subject to the State Minimum Fire Safe Regulations in unincorporated Mono County.
      “noteworthy changes include 30' setback requirements for all parcels regardless of land use designation and parcel size (unless certain criteria can be met for deviation”
    • District specific (with conditions) — New construction, including accessory structures and sheds, in unincorporated Mono County; yards vary by land-use designation and parcel size.
      “Minimum Front, Side and Rear Yards are required to maintain access, fire safety and community character and are specified for each land use designation. New construction including accessory structures and sheds, shall be set back from the property line or road easement, whichever is more restrictive, to preserve the required minimum yards.”
    • District specific (with conditions) — Commercial (C) land-use designation in unincorporated Mono County.
      “Minimum Setbacks: Front: 10’ Rear: 5’ Side: 0’ See Section 04.120 for other provisions.”
  • Lot coverageDistrict specific (with conditions)

    Development in unincorporated Mono County; lot coverage varies by land-use designation.

    • Coverage standards vary by designation and project type.
    • Mixed commercial and residential uses, public accommodations, and commercial uses fronting a public pedestrian mall or plaza may receive a 10% coverage bonus in applicable mixed-use designations.

    MFR-L maximum lot coverage: 40 percent · MFR-M and MFR-H maximum lot coverage: 60 percent · mixed-use coverage bonus: 10 percent (Applicable structures must contain mixed commercial and residential uses, commercial uses with public accommodations, or commercial uses fronting a public pedestrian mall or plaza.)

    “An additional coverage bonus of 10% (total coverage of 70%) shall be granted to structures that contain mixed commercial and residential (employee or long-term rentals) uses; commercial uses with public accommodations; or commercial uses that front a public pedestrian mall or plaza.”
  • Building heightDistrict specific (with conditions)

    Buildings and structures in unincorporated Mono County; height limits vary by structure type and land-use designation.

    • Standard buildings are limited to 35 feet measured from grade, using the more restrictive of natural or finished grade.
    • Residential development may exceed 35 feet up to 45 feet only if required side and rear yards are increased one foot for each foot over 35 feet.
    • Accessory buildings are limited to 20 feet, or 15 feet in MFR-L, unless approved by use permit.
    • Accessory agricultural buildings in the AG district may be up to 40 feet.
    • NHP structures may not exceed 24 feet.
    • Certain towers and similar structures require Director Review or a use permit, and other special limits apply.

    standard building height: <= 35 feet (Measured from the more restrictive of natural or finished grade.) · maximum residential height with increased yards: <= 45 feet (Side and rear yards must increase one foot for each foot over 35 feet.) · accessory agricultural building height in AG: <= 40 feet (Applies to accessory agricultural buildings such as hay barns.) · NHP structure height: <= 24 feet

    “Residential development May be permitted greater than 35’, to a maximum of 45’, provided that the required side and rear yards are increased one foot in width for each foot of height over 35’.”
    2 more reviewed findings on this topic
    • District specific (with conditions) — Maximum building height in the Commercial (C) land-use designation in unincorporated Mono County.
      “Maximum Building Height: 35’ See Table 04.010 for other provisions.”
    • District specific (with conditions) — Maximum building height in the Commercial Lodging Moderate (CL-M) and High (CL-H) land-use designations in unincorporated Mono County.
      “All buildings and structures hereinafter designed or erected, or existing buildings that may be reconstructed, altered, moved or enlarged, shall have a height no greater than 35 feet from grade measured from any point of the building.”
  • Living in an RVLimited

    Living in an RV on a parcel in unincorporated Mono County that experienced loss of the primary residence in the Mountain View Fire.

    • No permits or fees are required for the temporary emergency dwelling, but the owner must sign and return the Temporary Emergency Dwelling standards.
    • Placement must be verified by the Mono County Environmental Health Department and Building Division.
    • The provision may not be transferred to new ownership and applies only to the parcel owner at the time of the fire.
    • Once the main home is rebuilt, the RV may no longer be used as a residence and may only be stored, except for certain land-use designations such as Rural Mobile Home (RMH).

    maximum period to submit building permit for main residence: 3 years (The Community Development Director may extend the period based on justification.) · additional construction period after building permit submission: 3 years (The TED approval is valid for another three years to complete construction.)

    “sign and return the Temporary Emergency Dwelling (TED) standards”
    2 more reviewed findings on this topic
    • Temporary only (with conditions) — Placement and use of recreational vehicles on vacant or undeveloped private property in Mono County's unincorporated area, including use during construction of a main building and long-term temporary use in designated hazard zones.
      “Long-term temporary use of an RV – not to exceed six months of each year for a five-year period – may be permitted”
    • Temporary only (with conditions) — Recreational-vehicle parks and RV occupancy in the Rural Resort (RU) land-use designation in unincorporated Mono County.
      “USES PERMITTED SUBJECT TO USE PERMIT (Use Permit Processing, Ch. 32) [...] • Recreational-vehicle parks (see Dev. Standards – Mobile-home and RV Parks, Ch. 17), campgrounds and glamping [...] "Recreational-vehicle park" means any area or tract of land where two or more lots or spaces are rented or leased, or held out for rent or lease to owners or users of recreational vehicles that are occupied for temporary purposes or seasonal use.”
  • Tiny homesLimited

    Tiny homes or RV-type units not placed on a permanent foundation, including chassis-based units, used as permanent residences in unincorporated Mono County.

    • RVs may be used as permanent residences only in Rural Resort (RU) and Rural Mobile Home (RMH) land-use designations.
    • A Use Permit is required.
    • A maximum of one RV-type unit may be permitted without triggering state requirements.
    • Two or more units require permitting through the State Department of Housing and Community Development (HCD).
    • The 2021 county record states that the California Building Code had not created a separate definition for tiny homes on a chassis.

    maximum RV-type units without triggering state requirements: 1 unit (Two or more units require HCD permitting)

    “RVs may only be used as a permanent residence in Rural Resort (RU) and Rural Mobile Home (RMH)”
    3 more reviewed findings on this topic
    • Allowed (with conditions) — Tiny homes constructed on a permanent foundation in unincorporated Mono County.
      “Tiny homes on a permanent foundation are permittable under the CBC with a building permit.”
    • Limited — Residential occupancy of tiny homes on a vehicle chassis or other non-permanent foundation in unincorporated Mono County.
      “RVs may only be used as a permanent residence in Rural Resort (RU) and Rural Mobile Home (RMH) land use designations through a Use Permit. A maximum of one RV-type unit may be permitted without triggering state requirements. Two or more units requires permitting through the State Department of Housing and Community Development (HCD) as an RV or mobile home park.”
    • Allowed (with conditions) — Tiny homes on a permanent foundation and related residential occupancy in unincorporated Mono County.
      “permanent foundation are permittable under the CBC”
  • Manufactured homesLimited

    Manufactured or mobile homes used as residences in unincorporated Mono County, including Rural Mobile Home and Rural Residential land-use designations and manufactured-housing subdivisions.

    • In the Rural Mobile Home designation, a mobile home used as a single-family dwelling is a permitted use.
    • In the Rural Residential designation, a manufactured home used as a single-family dwelling is a permitted use, subject to the stated age and Section 04.280 criteria.
    • When there are two mobile homes on the same parcel, they must comply with the ADU requirements or with state mobile-home-park standards and obtain a county Use Permit.
    • Manufactured-housing subdivisions may be allowed only with a Use Permit and Tract Map application in ER, MU, MFR, RMH, RR, and SFR designations.
    • Manufactured-housing subdivisions have density, lot-area, district-area, lot-width, setback, access, and lot-coverage standards.

    manufactured-housing subdivision maximum density: <= 6 housing lots per acre (For a single home on each housing lot.) · manufactured-housing subdivision minimum lot area per home: >= 4000 square feet · manufactured-housing subdivision minimum area: >= 5 acres (Minimum subdivision lot width is 250 feet.) · manufactured-housing subdivision minimum lot width: >= 50 feet (Minimum lot depth is 80 feet.) · manufactured-housing subdivision maximum lot coverage: <= 75 percent (Includes housing unit, accessory structures, paved drives, and parking.)

    “Manufactured housing subdivisions may be allowed, subject to a use permit and Tract Map application in the following land use designations: ER, MU, MFR, RMH, RR and SFR.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in unincorporated Mono County land-use designations that allow single-family residences or in Specific Plan areas where allowed.

    • An ADU may be permitted in any land-use designation that allows single-family residences as a permitted use or as allowed in Specific Plan areas.
    • Detached one-bedroom units not exceeding 850 square feet and two-bedroom units not exceeding 1,000 square feet may proceed with a building permit, subject to four-foot side and rear setbacks and health and safety standards including prevention of snow shedding onto adjacent properties.
    • Units that do not qualify for ministerial approval may require Director Review or a Use Permit: one-bedroom units between 850 and 1,400 square feet require Director Review; two-bedroom units between 1,000 and 1,400 square feet require Director Review; units exceeding 1,400 square feet require a Use Permit.
    • Construction must conform to applicable height, setback, lot coverage, fee, snow-storage, and other residential development requirements.
    • A well or septic-served ADU requires an Environmental Health clearance letter with the building permit, Director Review, or Use Permit application; public water or sewer service requires a letter from the serving entity indicating adequate service.
    • For units that do not qualify under Section 16.040.A, one unit on the property must be owner occupied; detached ADUs qualifying under Section 16.040.A have no owner-occupancy requirement.
    • Required parking is one space for a one-bedroom unit and two spaces for units with two or more bedrooms; studios have no parking requirement, and listed exceptions eliminate parking standards.
    • Short-term rentals are prohibited in all accessory dwelling units.

    junior accessory dwelling unit maximum size: <= 500 square feet (Must be contained entirely within an existing single-family structure and contain cooking facilities.) · detached one-bedroom ADU ministerial maximum size: <= 850 square feet (Four-foot side and rear yard setbacks and health and safety standards apply.) · detached two-bedroom ADU ministerial maximum size: <= 1000 square feet (Four-foot side and rear yard setbacks and health and safety standards apply.) · ministerial review deadline: 60 days (Unless the ADU is built concurrently with the primary unit.) · development impact fee exemption threshold: < 750 square feet (All ADUs are exempt from Housing Mitigation Ordinance fees.)

    “An Accessory Dwelling Unit and Junior Accessory Dwelling Unit may be permitted in any land use designation that allows single-family residences as a permitted use or as allowed in Specific Plan (SP) areas subject to the General Provisions below.”
  • Who permits septicCounty (with conditions)

    Onsite wastewater treatment systems in the unincorporated area of Mono County.

    • The Mono County OWTS program reviews and issues permits and regulates greywater systems.
    • The ordinance states that enforcement is within the unincorporated area of Mono County.
    • The Regional Water Quality Control Board-approved LAMP and California Plumbing Code also apply.
    “Within the unincorporated area of Mono County, the Administrative Authority is authorized and directed to enforce the provisions of this chapter.”
  • Septic permitRequired

    Construction or installation of on-site sewage treatment and disposal systems in Mono County.

    • Mono County reviews and issues permits for on-site sewage systems.
    • Permits must be issued before construction begins.
    • The applicant must submit an application, permit fee, plot plan, and site location map.
    • Site evaluation and inspection of test trenches and percolation tests are required before permit issuance when applicable; requirements may be waived in some areas or increased in others.
    • If a conventional system is unsuitable, an alternative system may be considered and must be designed by a registered civil engineer, registered engineering geologist, or registered environmental health specialist and comply with Mono County Health Department requirements.
    • Commercial systems require design by an appropriately licensed professional, soil testing by an appropriately licensed geologist or soil scientist, and Mono County Health Department verification.
    • Seepage pits and cesspools are prohibited in Mono County.
    • The construction guide specifies minimum setbacks of 100 feet from water supply wells to septic tanks and leach lines, 100 feet from perennial streams and springs to septic tanks and leach lines, and 200 feet from lakes or reservoirs to leach lines; special conditions apply where private wells and springs are used for domestic water supply.

    percolation rate: 5-60 minutes per inch (The construction guide states that gravel/coarse sand with a rate under 1 minute per inch is not suitable and gives additional soil-specific criteria.) · reserve repair/replacement area: 100 percent of initial absorption-field area · natural slope in absorption field: < 30 percent · lake or reservoir setback to leach lines: >= 200 feet · perennial stream or spring setback to septic tank and leach lines: >= 100 feet · water supply well setback to septic tank and leach lines: >= 100 feet

    “Permits must be issued before construction begins.”
    One more reviewed finding on this topic
    • Required — Constructing, reconstructing, repairing, modifying, destroying, abandoning, covering, concealing, or putting an OWTS or graywater system into use in unincorporated Mono County.
      “No person shall construct, reconstruct, repair, modify, destroy, or abandon any OWTS or graywater system, or any portion thereof, without having first obtained a permit from the Administrative Authority.”
  • Septic inspectionRequired

    OWTS construction and installation in unincorporated Mono County.

    • Inspections must be scheduled at least two working days in advance.
    • Inspection is required before final covering of system components.
    • A qualified professional may conduct construction inspections after excavation and before rock or fill placement with Administrative Authority approval.
    • Before final approval, a signed report confirming installation according to the approved design must be submitted.
    • Additional testing is required if the system is installed outside the permitted or approved area.

    inspection scheduling lead time: >= 2 working days

    “Inspections shall be scheduled with the Administrative Authority a minimum of two working days in advance of the time requested. Inspections are required prior to final covering of any components of a system.”
  • Off-grid sanitationProhibited

    Seepage pits and cesspools used for wastewater disposal anywhere in Mono County.

    “Seepage pits and cesspools are prohibited in Mono County.”
    One more reviewed finding on this topic
    • Limited — Onsite wastewater treatment systems and other off-grid sanitation systems in unincorporated Mono County where a sewer system is not available.
      “Portable toilets are not acceptable for permanent use. [...] Holding tanks are not acceptable for wastewater disposal for residential use in lieu of a permitted OWTS.”
  • Well permitRequired

    Construction, repair, modification, or destruction of a well under the Mono County Health Department well-permit process.

    • The application requires an applicable permit fee and complete site plan showing the well location.
    • The applicant agrees to comply with Mono County and California well-construction laws and to submit a complete Well Completion Report immediately upon completion.
    • The permit is valid for twelve months from its date of issue.
    • The application becomes a permit when signed by the Environmental Health Specialist.

    permit validity: 12 months from date of issue

    “(WHEN SIGNED BY THE ENVIRONMENTAL HEALTH SPECIALIST, THIS APPLICATION IS A PERMIT)”
  • Mandatory utility hookupSewer (with conditions)

    Structures producing wastewater in unincorporated Mono County.

    • Any structure producing wastewater must have adequate wastewater treatment through an approved OWTS or connection to a public sewer.
    • When a public sewer is available within 200 feet of a structure producing wastewater, the structure must connect to the public sewer.
    • The LAMP does not supersede Section 4.1 of the Water Quality Control Plan for the Lahontan Region for prohibition areas.
    • The LAMP describes certain allowances related to excessive cost.
    • The LAMP does not apply to the incorporated Town of Mammoth Lakes or other Lahontan Basin Plan prohibition areas.

    public sewer distance threshold: <= 200 feet (Measured as availability within 200 feet under the LAMP rule.)

    “When a public sewer is available within 200 feet of a structure producing wastewater, the structure must connect to the public sewer.”
    One more reviewed finding on this topic
    • Conditional — Wastewater treatment for structures producing wastewater in unincorporated Mono County.
      “When a public sewer exists within 200 feet of a structure that produces wastewater, an OWTS will not be permitted and the structure must connect to the public sewer system.”
  • Agricultural exemptionAvailable (with conditions)

    Unoccupied shade-cloth or hoop-house structures constructed for nursery or agricultural purposes under the Mono County Building Division policy.

    • The exemption does not include service systems.
    • The structure must be a one-story, unoccupied building used exclusively for growing and storage of food, herbs, ornamental crops, or cannabis.
    • It must have an emergency escape opening on one or more sides, be readily removable for seasonal variations, use somewhat flexible material, and have a cloth-type or similar membrane no thicker than six mil.
    • Permanent or temporary electrical, plumbing, gas, or mechanical systems and permanent foundation or anchoring systems are not allowed without a building permit.
    • The structure must maintain Mono County General Plan standards and minimum Mono County setback requirements, plus applicable requirements of the local fire protection district or Cal Fire.
    • This exemption does not authorize work violating the building code or other laws or ordinances.

    maximum membrane thickness: <= 6 mil (The policy states the covering is not exceeding six mil (1/1000 inch).)

    “Permits shall not be required for the following: Shade-cloth and/or hoop-house structures constructed for nursery or agricultural purposes, not including service systems.”
  • Subdividing landRegulated (with conditions)

    Land divisions and parcel maps in Mono County administered through the County Planning Commission.

    • The county describes a parcel map or land division as division of real property shown on the latest assessment roll for sale, lease, or financing into four or fewer parcels.
    • The Planning Commission reviews and makes determinations on tentative parcel maps and land divisions.
    • A public hearing is conducted to receive input and comment.
    • The Planning Commission sets conditions or standards, makes required findings, and approves the tentative map.
    • After the applicant complies with all tentative-map conditions, the final map is brought before the Planning Commission for approval.
    • The county states that the average processing time for a land-division project is six to nine months.
    • The county Building Division does not oversee or permit work within the Town of Mammoth Lakes.

    parcels: <= 4 parcels (the county page's definition applies to a parcel map or land division for sale, lease, or financing) · average processing time: 6-9 months

    “A land division or parcel map is the division of any real property, improved or not, shown on the latest assessment roll, for the purpose of sale, lease or financing into four or fewer parcels. The Planning Commission reviews and makes determinations on tentative parcel maps/land division.”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Land divisions and parcel maps in unincorporated Mono County, including divisions for sale, lease, or financing into four or fewer parcels.
      “for the purpose of sale, lease or financing into four or fewer parcels. The Planning Commission reviews and makes determinations on tentative parcel maps/land division.”
    • Regulated (with conditions) — Tract-map and parcel-map subdivision review in unincorporated Mono County.
      “The County Surveyor is responsible for review and approval of subdivision maps (Tract Maps and Parcel Maps) in the unincorporated areas of Mono County.”
  • Driveway accessLimited

    Residential driveway construction along county-maintained roads and development of roads or driveways in unincorporated Mono County.

    • Encroachment permits are typically required for residential driveway construction along county-maintained roads.
    • In most cases, a grading permit is required for building a road or driveway.
    • Work within a County right-of-way or County road requires authorization through an encroachment permit.
    • The encroachment permit requires a staff-time deposit and a security deposit; the security deposit may be higher depending on the work and is refundable if final inspection finds no road damage.

    encroachment permit deposit: 528 USD (as of July 2023; based on $132/hour capped at 4 hours per residential unit) · security deposit: >= 500 USD (for most permits; may be higher depending on the work)

    “Typically encroachment permits are required for residential driveway construction along county maintained roads.”
  • Short-term rentalsLimited

    Short-term rentals in Mono County land use designations administered by the County.

    • The Mono County Board of Supervisors adopted new short-term-rental policies and regulations on December 9, 2025.
    • A Use Permit and a Short-Term Rental Activity Permit are required in any land use designation.
    • The County page provides application, inspection, and code-compliance materials.

    required approvals: Use Permit and Short-Term Rental Activity Permit

    “Short-term rentals in any land use designation require a Use Permit and a Short-Term Rental Activity Permit.”
  • Permit feesPublished

    County permit fee schedules applicable to unincorporated Mono County permits.

    • The FY 2025-26 fee listing is effective July 1, 2025.
    • Solid waste fee changes were pending when the page was retrieved.
    • The page states that the displayed schedule reflected FY 2024-25 fees.
    • Public health fees were being calculated and were to be added upon completion.

    fee schedule effective date: 2025-07-01

    “The fee listing noted below for FY 2025-26, effective July 1, 2025 [...] The schedule below reflects fees from FY 2024-25.”
  • Permit processPublished (with conditions)

    County planning permit process for projects in unincorporated Mono County.

    • A preapplication conference with County staff is recommended.
    • An application may be accepted as complete or additional information may be required within 30 days of submittal.
    • Complete applications are reviewed by local, state, and federal agencies and the LDTAC.
    • CEQA review, staff analysis, public noticing, and a Planning Commission hearing may apply.
    • Appeals to the Board of Supervisors require a completed appeal application and accompanying fees within 10 days of the decision date.
    • The Town of Mammoth Lakes is a separate permitting authority.

    completeness review response period: 30 days · appeal filing period: 10 days (from the decision date)

    “Application will be accepted as complete or additional information will be required within 30 days of submittal.”

California rules that apply here

  • Zoning districtsPartial

    California city and county zoning codes and the zoning districts established by those local jurisdictions.

    • The city or county zoning code implements general-plan policies at the individual-parcel level.
    • Local zoning codes identify allowed land uses in the jurisdiction’s zoning districts.
    • Since 1971, state law requires city or county zoning codes to be consistent with the jurisdiction’s general plan, except in charter cities.
    • The source does not publish a statewide list of parcel-specific zoning districts; the applicable local jurisdiction must be consulted.
    “The zoning code presents standards for different land uses and identifies which land uses [...] are allowed in the various zoning districts of the jurisdiction.”
  • Camping on your landLimited

    Camping in units operated by the California Department of Parks and Recreation statewide.

    • Camping is confined to areas designated for that purpose.
    • Occupancy by the same persons, equipment, or vehicles is generally limited to 30 days in any calendar year in that unit.
    • The Department may establish shorter or longer occupancy limits.
    • When a shorter seasonal limit applies, the camper must vacate the campsite and may not reregister in the unit until 48 hours have expired, measured from 12:00 noon on the checkout day to 12:00 noon on the second day following.
    • A district superintendent may permit one-night camping in a day-use area or portion of one, subject to Department-established fees and vehicle limitations; occupants must vacate by 9:00 a.m. the following morning.
    • California State Parks' current reservation policy states that each campground has a consecutive-night limit, requires a 48-hour absence after that limit, and generally has a 30-night annual maximum, subject to individual park policies.

    general annual occupancy limit: 30 days per calendar year per unit (The Department may establish shorter or longer limits of occupancy.) · return interval after shorter seasonal limit: 48 hours (Measured from 12:00 noon of the checkout day to 12:00 noon of the second day following.) · one-night camping in day-use area: 1 night (Only if permitted by the district superintendent; occupants must vacate by 9:00 a.m. the following morning.)

    “Occupancy by the same persons, equipment, or vehicles of any camping facility is limited to a total of 30 days in any calendar year in that unit.”
    One more reviewed finding on this topic
    • Allowed (with conditions) — Temporary camping in California special occupancy parks, including parks containing recreational vehicles, tents, or camping cabins.
      ““Special occupancy park” means a recreational vehicle park, temporary recreational vehicle park, incidental camping area, or tent camp.”
  • Campground & park staysLimited

    Occupancy and use of manufactured homes and mobilehomes in California mobilehome parks and other locations subject to HCD jurisdiction.

    • HCD administers titling and registration for manufactured homes and mobilehomes.
    • HCD-inspected mobilehome parks are subject to health and safety enforcement where local government has not assumed enforcement.
    • Manufactured/mobilehome park regulations address construction, use, maintenance, and occupancy.
    • Separate local land-use, building, fire, health, and utility requirements may apply.
    “MHs may be occupied outside or inside of mobilehome parks and installation and approval for occupancy is governed by the Mobilehome Parks Act (MPA), HSC Sections 18200, et seq., and Title 25, CCR Sections 1000, et seq.”
    One more reviewed finding on this topic
    • Limited — Occupancy and use of recreational vehicles in California special occupancy parks and designated RV sections of mobilehome parks.
      “Unless otherwise allowed by a local ordinance, RVs generally may be occupied only in mobilehome parks or special occupancy parks governed by the Mobilehome Parks Act”
  • county zoning authorityGeneral

    California county legislative bodies' authority to adopt zoning ordinances regulating buildings, structures, land uses, lots, yards, open space, lot coverage, intensity of use, parking, loading, and setbacks within county jurisdiction, including unincorporated areas.

    • The authority is exercised pursuant to Government Code Chapter 4, Zoning Regulations.
    • The statute separately authorizes city legislative bodies; incorporated municipalities may exercise their own zoning authority.
    • Government Code Section 65850 also lists authority to regulate signs and billboards, building and structure location, height, bulk, number of stories, and size, lot and open-space size and use, lot coverage, intensity of land use, offstreet parking and loading, and building setback lines.
    • The cited section states it was amended by Stats. 2017, Ch. 376, Sec. 1, effective January 1, 2018.
    “The legislative body of any county or city may, pursuant to this chapter, adopt ordinances that do any of the following:”
  • county building authorityGeneral

    California counties administering and enforcing state building standards through county building departments, including residential construction in unincorporated areas.

    • Each county must maintain building standards and state building regulations in the office of the building official responsible for administration and enforcement of state building standards.
    • The statewide Title 24 standards apply subject to statutory exceptions and any authorized local amendments or local requirements.
    • The cited HCD bulletin concerns the 2019 California Building Standards Code and its July 1, 2021 supplement; later code editions may supersede those particular edition dates.
    “These codes shall be maintained in the office of the building official responsible for the administration and enforcement of state building standards”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Building in a floodplain — Development in Mono County special flood hazard areas.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Mono County, California

Is Mono County a good place to live off-grid or homestead?

Mono County scores 45/100 on the Bolthole Index, a marginal county profile. Its strengths: sparse surroundings — about 1,228 people within 15 miles and manageable long-term carry cost. Watch-outs: elevated current hazard exposure and thin water margin (15.2″/yr rainfall).

Do you need a building permit in Mono County, California?

Mono County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Mono County Environmental Health (under Lahontan Regional Water Quality Control Board OWTS policy). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

Can you live in an RV or tiny home on your land in Mono County?

Living in an RV on your own land in Mono County is limited to specific cases: Living in an RV on a parcel in unincorporated Mono County that experienced loss of the primary residence in the Mountain View Fire. No permits or fees are required for the temporary emergency dwelling, but the owner must sign and return the Temporary Emergency Dwelling standards. Placement must be verified by the Mono County Environmental Health Department and Building Division. A tiny home is limited to specific cases. Confirm with the county before relying on it.

How much does land cost in Mono County, California?

Land in Mono County runs about $3,138 per acre, based on the latest county data.

What is the water situation in Mono County?

Mono County gets about 15.2" of rain a year, with severe drought in roughly 42.4% of years.

How remote is Mono County?

A typical private-land location has about 1,228 people within 15 miles and 1,802,530 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Mono compares in California

Compare side-by-side →See all 58 California counties ranked →