Bolthole Index

Placer County, California

Building permits, zoning and septic rules in unincorporated Placer County, California

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Unincorporated Placer County, California requires a building permit for new construction, additions and most alterations, issued by Placer County Building Services12. County zoning governs unincorporated land, though community and specific plans can change a parcel's answer34. Placer County Environmental Health handles septic permits and inspections countywide5.

At a glance

Building permit
Required in unincorporated Placer County, issued by county Building Services; Auburn and Colfax run their own building permits1678
Zoning authority
County Zoning Ordinance (Chapter 17) governs unincorporated land; community plans and the Tahoe Basin regulations add rules in their areas349
Septic permits
Placer County Environmental Health permits and inspects septic systems countywide5
Owner-builder
You can do the work yourself without a contractor's license if the home isn't built for sale10
Well permits
Only a C-57 licensed well driller can apply for and get a well permit11
RV/incidental camping
Allowed on your own land only up to 30 days in any 180-day period, with landowner permission and limited to two vehicles12
Driveway/encroachment permit
Required for a residential driveway or other work in a county-maintained road easement or right-of-way13

Who to call

Building permits

Placer County Building Services

Building permits, plan review and inspections for unincorporated Placer County under the California Building Code; also staffs a Tahoe office

530-745-3000

3091 County Center Drive, Auburn, CA 95603

Online permits →

Zoning

Placer County Planning Services Division

Enforces the Placer County Zoning Ordinance, maintains land-development and zoning information, and reviews land-development applications for unincorporated Placer County

530-745-3000

3091 County Center Drive, Auburn, CA 95603

Septic permits

Placer County Environmental Health — Septic Systems

Reviews and issues Septic Construction Permits and Septic Health Site Evaluations, and inspects onsite wastewater systems, for property inside and outside incorporated cities in Placer County

530-886-1870

11434 B Ave., Auburn, CA 95603

Roads & driveways

Placer County Department of Public Works

Conditions, issues and inspects encroachment permits for residential driveways and other work within a Placer County-maintained road easement or right-of-way

530-745-7500

3091 County Center Drive, Suite 220, Auburn, CA 95603

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

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

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Do you need a building permit in unincorporated Placer County, California?

Yes. Unincorporated Placer County requires a separate building permit for each building or structure regulated by the California Building Code before construction, alteration, repair, or demolition begins12. The county adopted the 2025 California Building Code, which applies to permit applications submitted in 2026 and after1415. If your parcel is zoned F, AE, or RA and is at least 10 acres, a building used solely for agricultural purposes can go through an agricultural-exempt building permit process instead of full residential review, though it still needs a permit and still has to meet setback and height rules16. These county rules stop at city limits: inside Auburn the city issues building permits7, and inside Colfax the city requires its own permit for manufactured buildings8. Septic permits do not move to the city in either place; Placer County Environmental Health still handles them517.

Who is the Placer County building department, and how do you reach them?

Placer County Building Services issues building permits for unincorporated land, with front counters in Auburn and at Tahoe City; reach the Auburn office at 530-745-3000 (3091 County Center Drive) or the Tahoe office at 530-581-6200 (775 N Lake Boulevard), or apply online through the county's e-Permits portal18. The county publishes its permit process, plan-review requirements, records, inspections and applications6. Every county building permit carries a Community Development Resource Agency technology surcharge of 3.5% of the permit amount, on top of the base permit fee19. Work must stay visible and accessible for inspection until the building official approves it, and residential structures of 5,000 square feet or more also need structural observation20. An owner-builder may personally perform some or all work, or use employees paid only wages, if the structure is not intended or offered for sale10.

Does Placer County have zoning?

Yes. The Placer County Zoning Ordinance governs land use and development in unincorporated Placer County, but community plans or specific plans may supply different controlling standards34. Article 17.06 establishes the zone and combining districts, and the Tahoe Basin Area Plan Implementing Regulations apply within the Tahoe Basin9. Inside Rocklin, Lincoln and Colfax, the city sets its own zoning212223. Minimum lot size and setbacks depend on the parcel's zone2425. Maximum site coverage is 40 percent in Residential Single-Family, though lots under 13,000 square feet are exempt26, 35 percent in Residential-Agricultural27 and 10 percent in Residential-Forest28. A -B Building Site lot takes its base zone's coverage, except in the Tahoe Basin, where TRPA ordinances regulate it29. Maximum height is 30 feet in Residential Single-Family and 36 feet in Residential-Forest and Residential-Agricultural30. We could not confirm a general minimum dwelling floor area; ask Planning Services31.

How do septic permits work in Placer County?

Placer County Environmental Health handles septic permitting and inspections countywide5. A new home without public sewer needs onsite sewage disposal, and the application requires a Septic Construction Permit with supporting documents; parcels without an existing soils report also need soils testing32. Incomplete applications are not processed33. Only about 1% of Placer County soils rate as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system34. A supplemental treatment system permitted after January 1, 2005 must have a service provider perform annual maintenance, due by the end of February35. Inside Lincoln, the city issues the septic permit but follows the county health department's recommendations on system type and layout36. If the parcel needs a well, only a C-57 licensed well driller can apply for the county well permit11.

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

Placer County does not treat incidental RV camping as a permanent residence. In specified unincorporated zones, camping in an RV or similar equipment requires the owner's written permission, is limited to two vehicles, and may last no more than 30 days in any 180-day period12. A tiny home must qualify under an accepted building or vehicle classification and be placed where that classification is allowed37. A certified manufactured home is treated as a single-family dwelling in every unincorporated zone that allows single-family dwellings, provided it is installed on the required foundation38. For off-grid sanitation, the county's portable-toilet guidance says untreated raw wastewater should not be discharged or buried on site and recommends licensed waste haulers; that is advisory wording, not a stated mandate39.

Building a home in Placer County: the steps, in order

  1. Confirm whether the parcel is in unincorporated Placer County or a city, because the county permit process applies outside incorporated city limits6.
  2. Ask Planning Services for the base zone, combining districts, setbacks, applicable community or specific plan, and any subdivision conditions before designing the home9440.
  3. If public sewer is unavailable, complete septic soils work and apply through Environmental Health; hire a C-57 licensed driller if a well is needed3211.
  4. Apply through Building Services in Auburn, Tahoe City or the e-Permits portal1819.
  5. Obtain a Public Works encroachment permit for a driveway or other work within a county-maintained road easement or right-of-way4113.
  6. Sign the owner-builder declaration if you qualify and will personally manage or perform the work10.
  7. Keep work accessible for inspection, then obtain occupancy approval before moving in2042.

What to check before you buy land in Placer County

Check the soil before counting on a standard septic system: only about 1% of Placer County's soils rate as not limited for a conventional drain field, so budget for a site evaluation and likely an engineered or alternative system34. About 44% of Placer County is federal land, mostly national forest, which can limit nearby development and affect access43. Only about 21% of the county's land sits at a gentle 15% grade or less, and steep terrain drives up building and septic costs44. Check whether the parcel fronts a county-maintained road, since a new driveway there needs an encroachment permit from Public Works41. Placer runs pricier than many rural counties: a typical home value near $694,843, a median property tax bill around $5,600 a year, and typical home insurance near $2,368 a year, with severe drought hitting roughly 34% of years45464748. Farmland has run about $12,188 an acre49.

Watch-outs

  • Placer County's incidental-camping allowance tops out at 30 days in any 180-day period with landowner permission and at most two vehicles; it does not permit living in an RV on your land year-round1250.
  • Placer County has not published a general minimum dwelling floor area for unincorporated homes that we could find; confirm with Planning Services51.
  • County zoning applies to unincorporated land, but a community plan, specific plan, Tahoe Basin regulation, city code or recorded subdivision condition may change the parcel-level answer4940.
  • Land in a flood-prone area of unincorporated Placer County needs a permit before building, altering, filling or re-grading, so ask the county about flood status before you buy52.
  • Renting a Placer County home short term in Eastern Placer County requires a short-term rental permit53.

Sources

  1. Apply for a Permit (2026 county census)
  2. Apply for a Permit, quoted and re-checked
  3. Zoning Ordinance, quoted and re-checked
  4. Article 17.02: Introductory Provisions - Placer County, quoted and re-checked
  5. Environmental Health, quoted and re-checked
  6. Building Permit Processing, Fees & Reports, quoted and re-checked
  7. Auburn: official source (Placer County), quoted and re-checked
  8. Colfax: 15.16.010 - Permit required (Placer County), quoted and re-checked
  9. Zoning Ordinance, quoted and re-checked
  10. Residential Submittal Requirements Packet, quoted and re-checked
  11. placer.ca.gov, quoted and re-checked
  12. Division VIII Specific Use Regulations, Placer County Code, quoted and re-checked
  13. Encroachment Permits, quoted and re-checked
  14. Building Permits, quoted and re-checked
  15. Approved Building Standards (California statewide rule), quoted and re-checked
  16. Agriculture Buildings, quoted and re-checked
  17. Colfax: Environmental Health - Placer County (Placer County), quoted and re-checked
  18. Placer County Building Services (placer.ca.gov)
  19. Building Permit Processing, Fees & Reports, quoted and re-checked
  20. After-the-Fact Construction Policy, quoted and re-checked
  21. Rocklin: Rocklin Municipal Code 17.08.170 Mobile/manufactured home design criteria (Placer County), quoted and re-checked
  22. Lincoln: Lincoln Municipal Code ch. 18.12 R-1 Single-Family Residential District (Placer County), quoted and re-checked
  23. Colfax: 17.72.030 - Residential zone general development standards (Placer County), quoted and re-checked
  24. Placer County General Plan Housing Background Report, quoted and re-checked
  25. Placer County General Plan Housing Background Report, quoted and re-checked
  26. Double S Ranch Planning Commission Staff Report, quoted and re-checked
  27. Article 17.44: Residential Agricultural (RA) District, quoted and re-checked
  28. Article 17.46: Residential Forest (RF) District, quoted and re-checked
  29. Division VI: Combining District Regulations, quoted and re-checked
  30. Placer County General Plan Housing Background Report, quoted and re-checked
  31. Placer County Planning Services Division (placer.ca.gov)
  32. Septic Systems, quoted and re-checked
  33. Placer County Environmental Health — Septic Systems (placer.ca.gov)
  34. 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
  35. Operation Maintenance & Monitoring, quoted and re-checked
  36. Lincoln: Lincoln Municipal Code 13.08.460 County health recommendations apply (Placer County), quoted and re-checked
  37. Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
  38. Placer County Code, Division VIII: Specific Use Regulations, quoted and re-checked
  39. Portable Toilets - Best Management Practices, quoted and re-checked
  40. Division VII General Development Regulations, quoted and re-checked
  41. Placer County Department of Public Works (placer.ca.gov)
  42. Article 15.04: Building and Construction Code, quoted and re-checked
  43. Federal land share: Bolthole Index county data
  44. Share of land at 15% slope or less: Bolthole Index county data
  45. Typical home value (Zillow): Bolthole Index county data
  46. Median property tax bill: Bolthole Index county data
  47. Typical home insurance premium: Bolthole Index county data
  48. Share of years in severe drought: Bolthole Index county data
  49. Farmland value per acre (USDA census): Bolthole Index county data
  50. hcd.ca.gov (California statewide rule), quoted and re-checked
  51. Zoning Ordinance (2026 county census)
  52. Flood Safety, quoted and re-checked
  53. FAQs - STR New Permit, quoted and re-checked

Written October 16, 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.

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Compared with neighboring counties

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

RulePlacer CountyEl Dorado CountyNevada CountyAmador CountyYuba CountySierra CountySacramento County
Building permitRequiredRequiredRequiredLimitedRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Env. HealthCounty Env. Management Dept.County Env. Health Dept.County Env. Health Dept.County Env. HealthCounty Env. HealthEMD

County locator

Placer County in California

56
County map
Placer County highlighted among the California counties · colored by Index score

How Placer County scores

Seclusion48100% ev.
Self-Sufficiency58100% ev.
Admin Boringness41100% ev.
Durability43100% ev.
Property Autonomy56100% ev.
Carry Cost41100% 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 →

$695kTypical home
0.9%Property tax
$12,188Land / acre
46.7"Annual rain
34.2% of yrsSevere drought
16 / yr (+9.3)Mid-century 100°F days
60.6 daysMid-century dry spell
2.93" (+5.2%)Mid-century 1-day rain
1.09×Wildfire change factor
100%Forward climate coverage
$2,368Home insurance / yr
5.8% / yrInsurance growth
2.52%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,643,378People within 2 hr
123,463Radius comparison (15 mi)
301People / sq mi
43.9%Federal land
21.1%Land at 15% slope or less
0.7%Soils rated "not limited" for septic (strict USDA rating)
5,432 acWorkable land screen
70.7%Wooded land
71.1 tonsBiomass / forest ac
54°FAvg temp

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Cities and towns in Placer 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 Placer County

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

Placer County rules

  • Building permitRequired

    Buildings and structures regulated by the California Building Code in unincorporated Placer County, including erection, construction, enlargement, alteration, repair, movement, improvement, removal, conversion, or demolition.

    • A separate permit must be obtained for each building or structure before the covered work begins.
    • Projects within incorporated city limits must contact the applicable local building department rather than Placer County.
    • The county building code applies to all new construction, alterations, repairs, relocations, or reconstruction in unincorporated areas.
    • Code-specific exemptions and special-district rules may apply.
    “no building or structure regulated by this Code shall be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted or demolished unless a separate permit”
  • Owner-builder exemptionAvailable (with conditions)

    Owner-builders applying for residential building permits through Placer County Building Services.

    • The owner or employees whose wages are their sole compensation may perform all or portions of the work.
    • The structure must not be intended or offered for sale.
    • If the building or improvement is sold within one year of completion, the owner-builder bears the burden of proving it was not built or improved for the purpose of sale.
    • An owner may alternatively qualify by exclusively contracting with licensed contractors or by another applicable exemption from the Contractors' State License Law.
    • The owner-builder declaration must be signed under penalty of perjury, and the permit application authorizes county representatives to enter the property for inspection purposes.

    sale restriction period: 1 year after completion (Personal residence exception stated in the declaration applies to the residence in which the owner resided for at least one year before completion.)

    “The Contractors’ State License Law does not apply to an owner of the property who, through employees’ or personal effort, builds or improves the property”
  • Building code adoptedAdopted (with conditions)

    Construction permit applications in unincorporated Placer County subject to the county-administered building standards.

    • Applications submitted on or after January 1, 2026 must comply with the 2025 California Building Standards Code.
    • The code includes building, residential, electrical, mechanical, plumbing, fire, energy, and green building standards.
    • The cited county page states the effective date as January 1, 2026.

    effective date: 2026-01-01

    “This article is applicable in all the unincorporated areas within Placer County. [...] The California Building Code, 2025 Edition [...] is hereby adopted”
  • InspectionsRequired

    Construction or work for which a building permit is required and administered by Placer County in the unincorporated areas of Placer County.

    • The construction or work must remain visible and accessible for inspection until approved.
    • The owner or authorized agent must keep the work visible and accessible for inspection purposes.
    • The county or building official is not liable for expenses incurred in removing or replacing material required to allow inspection.
    • Projects within city limits are handled by the applicable city or town rather than Placer County.
    • Structural observation is additionally required for all residential structures 5,000 square feet or more under California Building Code Chapter 17, with a final written report retained in the permanent Building Permit file.

    structural observation threshold: >= 5000 square feet (residential structures)

    “CBC § 110.1: Construction or work for which a permit is required shall be subject to inspection by the building official and such construction or work shall remain visible and able to be accessed for inspection purposes until approved.”
  • Certificate of occupancyRequired

    Occupancy or use of structures governed by the Placer County Building and Construction Code in unincorporated Placer County.

    • Certificates of occupancy require approvals from all applicable agencies and county departments, plus the applicable fire district, Placer County Fire, or CAL FIRE.
    • The certificate cannot be issued until all county requirements have been met.
    • Occupying or using a structure without the approval is a code violation and is deemed a public nuisance.
    • The certificate must be posted conspicuously and may not be removed except by the chief building official.
    • The posting requirement does not apply to Group U and Group R-3 occupancies.
    “Occupying or using a structure without this approval shall constitute a violation of this code and will be deemed a public nuisance.”
  • County-wide zoningPresent (with conditions)

    Placer County Zoning Ordinance Chapter 17 applies to land uses and development in unincorporated Placer County.

    • The source scope is unincorporated areas only.
    • Community plans and land-use ordinances adopted pursuant to those plans may apply in listed areas, subject to the conflicts and deference rules in Section 17.02.030.
    • Specific plan standards may apply, and other permits or approvals may still be required.
    “within the unincorporated areas of Placer County”
  • Local zoningVaries (with conditions)

    Countywide aggregate of local zoning: Placer County zoning regulates unincorporated areas, while listed community-plan and specific-plan areas may follow separate implementing regulations; incorporated municipalities are outside the cited county ordinance scope.

    • The county ordinance expressly applies to unincorporated areas.
    • Community plans or land-use ordinances adopted pursuant to them may control in listed areas.
    • Specific plan standards may apply where they conflict with the general zoning chapter.
    • This aggregate does not assert that Placer County administers municipal zoning inside incorporated cities.
    “the provisions of the community plans shall apply.”
  • Zoning districtsPublished

    Zoning districts and related zoning provisions administered under the Placer County Zoning Ordinance for unincorporated Placer County.

    • The county zoning page links to the Placer County Code and identifies Article 17.06 as Zoning Districts Established.
    • The zoning ordinance includes zone and combining districts, zoning maps, allowable land uses and permit requirements, zoning clearance procedures, land-use and permit tables, and zone district regulations.
    • The county page lists agricultural/resource/open-space, commercial, industrial, residential, specific-plan, and combining districts.
    • The Tahoe Basin Area Plan Implementing Regulations apply within the Tahoe Basin.
    “17.06.010 - Zone and Combining Districts Established 17.06.020 - Zoning Maps Adopted 17.06.030 - Allowable Land Uses and Permit Requirements 17.06.040 - Zoning Clearance Procedure 17.06.050 - Land Use and Permit Tables 17.06.060 - Zone District Regulations”
  • Minimum lot sizeDistrict specific (with conditions)

    Residential development standards in unincorporated Placer County, subject to the applicable base and combining districts.

    • The official General Plan background report identifies different minimum parcel standards by zoning district.
    • The source is a 2013 public-hearing-draft housing background report summarizing the 2012 Zoning Ordinance; current Section 17.06.060 and combining-district amendments, including Ordinance 6392-B, require confirmation before relying on these figures.
    • The Building Site combining district allows lots as small as 3,000 square feet.

    Agricultural Exclusive (AE) minimum parcel area: 20 acres · Farm (F) minimum parcel area: 200000 square feet · Building Site combining district minimum lot area: >= 3000 square feet (The source states the district allows lots as small as 3,000 square feet.)

    “The building site combining district allows lots as small as 3,000 square feet.”
  • SetbacksDistrict specific (with conditions)

    Residential development in unincorporated Placer County zoning districts.

    • For commercial zones, the side and rear setbacks in the table apply to stand-alone residential projects; a 5-foot side and rear setback generally applies to mixed residential-commercial buildings, except Highway Services, where a 10-foot rear setback is required.
    • Commercial Planned Development setbacks are determined by the use permit, except senior housing projects, which have a 20-foot front setback and 10-foot minimum side and rear setbacks.
    • The source is a 2013 public-hearing-draft housing background report summarizing the 2012 Zoning Ordinance.

    Residential Single-Family front setback: 20 feet · Residential-Forest front/side/rear setbacks: 50 / 30 / 30 feet · Residential-Agricultural front/side/rear setbacks: 50 / 30 / 30 feet

    “The front setback is reduced to 12.5 feet”
  • Lot coverageDistrict specific (with conditions)

    Residential development in unincorporated Placer County zoning districts.

    • Residential Single-Family and Multi-Family maximum coverage is 40 percent for one-story buildings and 35 percent for buildings of two or more stories.
    • Residential-Forest maximum coverage is 10 percent; Residential-Agricultural maximum coverage is 35 percent.
    • The Density Limitation combining district relaxes the base RS/RM standards to 50 percent for one story and 40 percent for two or more stories.
    • The source is a 2013 public-hearing-draft housing background report summarizing the 2012 Zoning Ordinance.

    Residential Single-Family maximum coverage: 40% one story; 35% two or more stories · Residential-Forest maximum coverage: 10 percent · Residential-Agricultural maximum coverage: 35 percent · Density Limitation combining district maximum coverage: 50% one story; 40% two or more stories

    “The maximum site coverage is increased to 50 percent for one story and 40 percent for two stories.”
    6 more reviewed findings on this topic
    • Specified — New development in the unincorporated Placer County Residential Single-Family (RS) zone district.
      “Site coverage (5) | 40 percent maximum [...] (5) | The percentage of total site area that may be covered by buildings or structures. Lots less than 13,000 square feet, duplex, triplex, and fourplex uses are exempt from site coverage.”
    • Specified — All new development in the unincorporated Placer County Residential-Agricultural (RA) zone district.
      “Site coverage (3) | 35 percent maximum [...] (3) | The percentage of total site area that may be covered by buildings or structures.”
    • Specified — All new development in the unincorporated Placer County Residential-Forest (RF) zone district.
      “Site coverage (3) | 10 percent maximum [...] (3) | The percentage of total site area that may be covered by buildings or structures.”
    • Specified — All new development in the unincorporated Placer County Residential Multifamily (RM) zone district.
      “Site coverage (4) | 70 percent [...] (4) | The percentage of total site area that may be covered by buildings or structures. Residential and mixed use structures are exempt from site coverage.”
    • District specific (with conditions) — Lots designated with a -B Building Site combining district in unincorporated Placer County.
      “Maximum Lot Coverage. The maximum lot coverage permitted on any lot designated with a -B combining district shall be as specified by the base zone district. Exception: Maximum coverage in the Tahoe Basin (Tahoe Basin Area Plan) is regulated by Tahoe Regional Planning Agency (TRPA) ordinances.”
    • District specific (with conditions) — Parcels within a -DL Density Limitation combining district in unincorporated Placer County.
      “4 | 40% [...] 5 | 50/40% [...] 6 | 50/40% [...] 7 | 50/40% [...] 8 | 50/40% [...] 9 | 70% [...] 10 or greater | 70%”
  • Building heightDistrict specific (with conditions)

    Residential development in unincorporated Placer County zoning districts.

    • The summarized maximum height is 30 feet for Residential Single-Family, 36 feet for Multi-Family, 36 feet for Residential-Forest and Residential-Agricultural, 30 feet for Neighborhood Commercial, 50 feet for General Commercial and Commercial Planned Development, and 35 feet for Highway Services.
    • The source is a 2013 public-hearing-draft housing background report summarizing the 2012 Zoning Ordinance.

    Residential Single-Family maximum height: 30 feet · Multi-Family maximum height: 36 feet · Residential-Forest maximum height: 36 feet · Residential-Agricultural maximum height: 36 feet

    “Residential-Forest 50 ft. 30 ft. 30 ft. 10% 36 ft.”
  • Camping on your landLimited

    Incidental camping using tents, travel trailers, recreational vehicles, or other mobile camping equipment in unincorporated Placer County.

    • Allowed only in the zone districts identified by Sections 17.06.050 and 17.06.060 et seq.
    • Written permission from the property owner is required.
    • Camping may not create a health, fire, or other safety hazard.
    • No more than two vehicles may be associated with the camping.
    • Camping may not exceed 30 calendar days in any 180 consecutive days.

    maximum camping duration: <= 30 calendar days (in any 180 consecutive days) · maximum associated vehicles: <= 2 vehicles

    “Time Limit. Incidental camping shall not occur for more than 30 calendar days in any 180 consecutive days.”
  • Manufactured homesAllowed (with conditions)

    Permanent manufactured-home occupancy on private property in unincorporated Placer County.

    • Certified mobile homes/manufactured homes are treated as single-family dwellings and allowed in all zones that allow single-family dwellings.
    • A certified unit must be placed on a foundation system under California Health and Safety Code section 18551.
    • In RS, RM, MT, and RES districts, certified units must have roof eave and gable overhangs of at least one foot.
    • Mobile homes that do not meet the certified-mobile-home requirements may be placed only on legal building sites in AE, F, RA, and RF zones.
    • For other mobile homes, sites generally must be at least 10 acres or the zone minimum, whichever is greater; where another residence exists, the parcel or contiguous commonly owned parcels must meet the larger acreage formula.
    • If disposition of property eliminates the required acreage credit, the mobile home must be removed within 30 days.
    • A mobile home in the Sierra Estates Subdivision exception is subject to the stated subdivision condition.
    • Mobile homes used as ADUs, caretaker or employee housing, temporary construction/disaster dwellings, or placed in HCD-regulated mobile-home parks are governed by separate provisions or excluded from this section.

    certified-unit foundation: required (California Health and Safety Code section 18551) · minimum roof eave and gable overhang in RS, RM, MT, and RES: >= 1 foot (certified mobile homes) · minimum site size for other mobile homes: >= 10 acres (or applicable zone minimum, whichever is greater) · removal deadline after loss of acreage credit: <= 30 days

    “certified mobile homes (manufactured homes) for permanent occupancy are considered the same as single-family dwellings”
  • Who permits septicCounty

    Onsite wastewater and septic-system permitting and inspection in Placer County.

    • The county Environmental Health division administers the identified septic-system services.
    “Septic Systems Providing guidance, permitting and inspections to help property owners maintain safe and effective onsite wastewater systems.”
  • Septic permitRequired

    Septic-system construction and onsite sewage disposal for homes in Placer County, particularly where public sewer is unavailable.

    • A Septic Construction Permit application and required supporting documents must be submitted.
    • Incomplete permit applications cannot be processed.
    • Where public sewer is unavailable for a new home, a septic system is required for onsite sewage disposal.
    • Soils testing is required if the parcel does not have a soils testing report; testing is conducted by a sewage disposal consultant and a representative of Environmental Health.
    • If the property is in Auburn, Rocklin, Roseville, Lincoln, or Loomis, building-permit questions should be directed to that city's building department.
    “Fillable forms are now available for the Septic Construction Permit and the Septic Health Site Evaluation (see links below). As part of the application process, please complete the fillable forms and send via email to [email protected] with the necessary documents required by the application such as site plans, assessor’s parcel pages and any other documents as required as part of the permit application process. Permit applications that are incomplete cannot be processed.”
  • Septic inspectionLimited

    Septic systems in Placer County, with mandatory annual maintenance for supplemental treatment systems permitted after January 1, 2005.

    • A service provider must perform the annual maintenance for a supplemental treatment system permitted after January 1, 2005.
    • Placer County states that system-care and maintenance items for standard systems and low-pressure-dose systems are recommendations; the page does not state that the low-pressure-dose annual inspection recommendation is mandatory.
    • The required service must be performed by the end of February; the County states that reminders are sent every November and OM&M billing is mailed in January.

    supplemental treatment system permit date: > 2005-01-01 (The County wording is 'permitted after January 1, 2005'.) · required maintenance frequency: per 1 year · required service deadline: end of February

    “If you have a supplemental treatment system that was permitted after January 1, 2005, you are required to have a service provider perform annual maintenance”
  • Off-grid sanitationLimited

    Portable-toilet and similar off-grid sanitary facilities addressed by Placer County's Portable Toilets Best Management Practices page.

    • The County page uses advisory wording: sanitary or septic wastes should be treated or disposed of in accordance with state and local requirements.
    • The page says untreated raw wastewater should not be discharged or buried within the project site.
    • The page says reputable, licensed sanitary and septic waste haulers should be used and regular collection should be arranged before facilities overflow; these statements are presented as best-management-practice guidance, not as an expressly stated mandate on the page.
    • The page separately states that discharge of pollutants into the storm drainage system or surrounding water bodies is prohibited and release of any non-stormwater discharge is illegal.

    minimum distance from drain inlets: >= 50 feet (The source qualifies this with 'if possible'.)

    “Sanitary or septic wastes should be treated or disposed of in accordance with state and local requirements. Untreated raw wastewater should not be discharged”
  • Well permitRequired

    Domestic or public well construction, modification, destruction, renewal, deepening, and related well work in Placer County.

    • Only a well driller with a C-57 license can apply for and obtain a well permit.
    • The county Environmental Health fee schedule lists separate permits for domestic/public well construction, destruction, modification, renewal, second or subsequent permits, variances, and deepening.
    • The fee schedule states that it is effective July 1, 2025 and was revised March 3, 2026.
    • New permits and ownership changes may be issued on a pro-rated semiannual basis.
    • Operating a facility before obtaining a required permit incurs a penalty of double the permit fee.

    domestic/public well permit fee: 1110 USD (fee schedule effective July 1, 2025) · operation-without-permit penalty: 2 times permit fee (for construction or operation before obtaining a required permit)

    “Only a well driller with a C-57 license can apply for and obtain a well permit.”
  • Agricultural exemptionConditional

    Agricultural buildings on parcels zoned F, AE, or RA in Placer County.

    • The parcel must be 10 acres or greater.
    • The building must be used solely for agricultural purposes.
    • The agricultural building still requires approval of a building permit.
    • The building remains subject to county zoning requirements, including setbacks, building heights, and other requirements.
    • The County Agricultural Commissioner and Community Development Resource Agency must review and approve the agricultural building permit.

    minimum parcel area: >= 10 acres

    “Owners of parcels zoned F, AE, and RA of 10 acres or greater may apply for an agricultural exempt building permit. The exemption refers to buildings that are used solely for agricultural purposes. Please note that agricultural buildings still require approval of a building permit and remain subject to applicable county zoning requirements including setbacks, building heights, and other requirements. Agricultural building permits require review and approval by the county’s Agricultural Commissioner, as well as review and approval by the Community Development Resource Agency.”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivisions in unincorporated Placer County.

    • New parcels in a subdivision must satisfy both Placer County Code Chapter 16 and applicable zoning provisions.
    • Major subdivisions have specific design and improvement requirements, including maintained-highway access, county-standard streets, and homeowner-association maintenance where streets are not accepted for county maintenance.
    • Land under a Williamson Act conservation agreement may not be divided unless a new qualifying conservation agreement is approved, subject to the statutory nonrenewal exception.
    “Each existing parcel proposed for development or a new land use, and each new parcel proposed in a subdivision shall comply with the provisions of this section. New parcels proposed in a subdivision shall also satisfy all applicable provisions of Chapter 16 of this code (Subdivisions).”
  • Driveway accessLimited

    Residential driveways and other work within a Placer County maintained road easement or right-of-way.

    • An encroachment permit is required for work within a Placer County maintained road easement or right-of-way.
    • Residential driveways are listed as a typical type of work requiring an encroachment permit.
    • The Department of Public Works conditions, issues, and inspects encroachment permits.
    • The requirement does not establish a countywide requirement for every private driveway; it applies to work in the county-maintained road easement or right-of-way.
    • Private roads, state highways, and streets and roads within incorporated city limits are not county maintained and may be subject to another authority.
    “An Encroachment Permit is required for any work within a Placer County maintained road easement or right-of-way. [...] TYPICAL TYPES OF WORK REQUIRING AN ENCROACHMENT PERMIT [...] Residential driveways”
  • Building in a floodplainRequired

    Development in flood-prone areas of unincorporated Placer County, including building, altering, filling, or re-grading property or work within an easement or right-of-way.

    • A permit must be obtained before building on, altering, filling, or re-grading property or working within an easement or right-of-way.
    • If reconstruction, additions, or other improvements to a building equal or exceed 40% of the building's market value, the building must meet the same construction requirements as a new building.
    • Substantially damaged buildings must also be brought up to the same standards.
    • The cited county information expressly applies to properties within the unincorporated areas of Placer County; incorporated jurisdictions may have different regulatory authorities.

    improvement value threshold: >= 40 percent of building market value (Applies to reconstruction, additions, or other improvements; substantially damaged buildings are also subject to the same standards.)

    “All development within the county requires a permit. Always check and fulfill permitting requirements with the Community Development Resource Agency at (530) 745-3000 before you build on, alter, fill, or re-grade on any portion of your property and/or within any easement or right-of-way. [...] This information is provided by Placer County and is applicable to properties within the unincorporated areas of the County.”
  • Short-term rentalsLimited

    Short-term rentals in Eastern Placer County, within the county's Eastern Placer County STR boundary.

    • An STR permit is required in Eastern Placer County.
    • The county FAQ states that information for renting short-term in other areas of Placer County should be obtained from the Transient Occupancy Tax department and the applicable town or city.
    • A business license is not required to obtain an STR permit.
    • Timeshares and units approved as condo-hotels are not subject to the STR Ordinance.
    • A local contact must be reachable by telephone 24 hours a day, reside within 35 driving miles of the STR unit, and have access and authority to assume management of the unit.
    • The county FAQ separately states that a Transient Occupancy Tax certificate is required and that each single-family STR must provide a bear bin or a condo must provide an accessible dumpster.

    local contact distance: <= 35 driving miles · local contact availability: 24 hours per day

    “STR permits are only required in Eastern Placer County. [...] Properties that are not subject to the STR Ordinance include timeshares and units approved as a condo-hotel. [...] Local contact person is someone who agrees to be personally available by telephone on a 24-hour basis, resides within 35 driving miles of the STR unit, has access and authority to assume management of the STR unit.”
  • Permit feesPublished

    Building permits administered by Placer County for property outside incorporated city limits.

    • All building permits include a Community Development Resource Agency Technology Surcharge Fee.
    • The technology surcharge is 3.5% of the total permit amount, with a cap adjusted annually.
    • The page links to a Fee Schedule effective July 1, 2026, a prior Fee Schedule effective July 1, 2025, a permit fee estimator, and residential and commercial valuation tables effective July 1, 2025.
    • For property within a city limit, the page directs applicants to contact the local Building Department.

    technology surcharge: 3.5 percent (subject to a cap amount adjusted annually) · fee schedule effective date: 2026-07-01

    “All Building permits will have the Community Development Resource Agency Technology Surcharge Fee added to the total permit amount. The fee is 3.5% with a cap amount that is adjusted annually. Please review the Fee Schedule for the current maximum Technology Surcharge Fee.”
  • Permit processPublished (with conditions)

    County building permit processing for regulated buildings and structures outside incorporated city limits.

    • A separate permit must be obtained for each regulated building or structure before the listed construction activity.
    • The Building Permit Application Form must be printed on letter-size paper, 8.5 inches by 11 inches.
    • For property within a city limit, contact the local Building Department.
    • The county page provides links for permit process and code information, plan review requirements, online permits, permit records, inspections, and applications.
    “A building permit is required to erect, construct, enlarge, alter, repair, move, improve, remove, convert, or demolish a building or structure that is regulated by the unless a separate permit for each building or structure has first been obtained (refer to California Building Code). The Building Permit Application Form (PDF) must be printed on letter-size paper (8.5 inches by 11 inches). For property within a city limit, contact your local Building Department.”

California rules that apply here

  • Minimum dwelling sizeSpecified

    Efficiency units permitted by a California city, county, or city and county.

    • The local jurisdiction must adopt an ordinance permitting the efficiency unit.
    • Occupancy is limited to no more than two persons.
    • The unit may have partial kitchen or bathroom facilities as specified by the local ordinance.
    • All other applicable minimum standards under Health and Safety Code Part 1.5 continue to apply.

    minimum floor area: >= 150 square feet · maximum occupancy: <= 2 persons

    “Notwithstanding Sections 17922, 17958, and 17958.5, a city, county, or city and county may, by ordinance, permit efficiency units for occupancy by no more than two persons which have a minimum floor area of 150 square feet and which may also have partial kitchen or bathroom facilities, as specified by the ordinance.”
  • Living in an RVTemporary only (with conditions)

    Occupancy of recreational vehicles as residential units in California.

    • RVs are not intended for occupancy as permanent dwellings.
    • Unless a local ordinance allows otherwise, RV occupancy generally is limited to mobilehome parks or special occupancy parks governed by the Mobilehome Parks Act or Special Occupancy Parks Act.
    • Applicable state or local approval and enforcement requirements depend on the RV's location and classification.

    maximum gross area: <= 400 square feet (Measured at maximum horizontal projections; internal living room area must be less than 320 square feet excluding specified built-in equipment and bath/toilet rooms.)

    “RVs are not intended for occupancy as a permanent dwelling. [...] Unless otherwise allowed by a local ordinance, RVs generally may be occupied only in mobilehome parks or special occupancy parks”
  • Tiny homesAllowed (with conditions)

    Occupancy of a structure marketed or described as a tiny home in California.

    • The tiny home must comply with applicable standards and be approved as a HUD-Code manufactured home, California Residential or Building Code home, factory-built housing, recreational vehicle, park trailer, or camping cabin.
    • The location must be approved for the applicable classification.
    • A tiny home that does not fit one of those classifications and does not comply with the California Building Standards Code is a noncomplying structure whose occupancy is illegal.
    • Approving and enforcing agencies vary depending on whether the unit is inside or outside a mobilehome or special occupancy park.

    park trailer or RV gross area limit: <= 400 square feet (Applicable classification-specific exclusions and standards apply.)

    “In order to be occupied, a tiny home must comply with the standards of, and be approved as one of the following types of structures: a HUD-Code manufactured home (MH), California Residential Code or California Building Code home, factory-built housing (FBH), recreational vehicle (RV), park trailer (PT) or camping cabin (CC).”
  • Accessory dwellingsAllowed (with conditions)

    ADUs and junior ADUs subject to California State ADU Law.

    • Approval is ministerial and without discretionary review or a hearing.
    • Development standards must be objective and knowable in advance.
    • The local permitting agency must determine application completeness and provide written notice within 15 business days.
    • If an application is incomplete, the agency must identify missing items and explain how to complete it.
    • Local site, building, health, safety, fire, utility, and other applicable requirements continue to apply.

    written completeness determination: <= 15 business days (Measured from the permitting agency's receipt of the application.) · final written determination after appeal: <= 60 business days (Applies after receipt of the written appeal.)

    “A permit application for an accessory dwelling unit shall be considered and approved ministerially without discretionary review or a hearing [...] A permitting agency shall determine whether an application to create or serve an accessory dwelling unit is complete and provide written notice of this determination to the applicant not later than 15 business days after the permitting agency received the application.”
  • Mandatory utility hookupSewer (with conditions)

    Certain existing OWTS in California Tier 3 impaired-water-body areas that commit to connect to a centralized wastewater collection and treatment system regulated through waste discharge requirements.

    • The OWTS must have been constructed and operating, or permitted, on or before the date the nearby water body was added to OWTS Policy Attachment 2.
    • The owner must commit by legally binding document to connect to a centralized wastewater collection and treatment system regulated through waste discharge requirements.
    • The owner must sign the legally binding document within 48 months after the nearby water body's initial listing on Attachment 2.
    • The specified connection date may not extend beyond nine years after the date the nearby water body is added to Attachment 2.
    • The rule is an exception to Section 10 requirements for qualifying existing or permitted systems; it is not a general statewide requirement that every property connect to public sewer.

    deadline to sign connection commitment: 48 months (Measured from the date the nearby water body is initially listed on Attachment 2.) · maximum time to complete connection: <= 9 years (Measured from the date the nearby water body is added to Attachment 2.)

    “The owner must sign the document within forty-eight months of the date that the nearby water body is initially listed on Attachment 2. The specified date for the connection to the centralized community wastewater collection and treatment system shall not extend beyond nine years following the date that the nearby water body is added to Attachment 2.”
  • 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”

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.

Water rights & wells in Placer County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from California’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellPermit required — restricted

California requires no STATE permit for a domestic well — wells are permitted by the county — but under SGMA a Groundwater Sustainability Agency can meter or restrict new wells in medium/high-priority and critically overdrafted basins, and Executive Order N-7-22 requires counties in those basins to get GSA verification that a new well is consistent with the Groundwater Sustainability Plan before permitting.

Limit: 2 acre-feet/year de minimis under SGMA (Water Code §10721(e)) — largely exempt from GSA metering/fees

California DWR / State Water Board — SGMA de minimis & EO N-7-22 Action 9 FAQ ↗
  • Sacramento Valley high-priority subbasinspartial of county

    High-priority SGMA subbasins (Corning, Colusa, Vina, Antelope-Tehama, South Yuba, North & South American, Solano, Yolo) with adopted GSPs; a new well is subject to GSA/EO N-7-22 consistency review.

    California DWR — SGMA Basin Prioritization ↗

Hybrid state (appropriation + riparian). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the California state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Placer County, California

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

Placer County scores 56/100 on the Bolthole Index, a solid county profile. Its strengths: workable self-sufficiency basics: 46.7″/yr rainfall and 70.7% wooded land. Watch-outs: higher long-term carry cost and more administrative friction around building and land use.

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

Placer County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Placer County Environmental Health (Sewage Disposal / Septic Systems program). 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 Placer County?

Living in an RV on your own land in Placer County is allowed on a temporary basis only: Statewide rule. Occupancy of recreational vehicles as residential units in California. RVs are not intended for occupancy as permanent dwellings. Unless a local ordinance allows otherwise, RV occupancy generally is limited to mobilehome parks or special occupancy parks governed by the Mobilehome Parks Act or Special Occupancy Parks Act. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Placer County, California?

Land in Placer County runs about $12,188 per acre, based on the latest county data.

What is the water situation in Placer County?

Placer County gets about 46.7" of rain a year, with severe drought in roughly 34.2% of years. On water rights, Placer County lies in the Sacramento Valley high-priority subbasins — High-priority SGMA subbasins (Corning, Colusa, Vina, Antelope-Tehama, South Yuba, North & South American, Solano, Yolo) with adopted GSPs; a new well is subject to GSA/EO N-7-22 consistency review..

How remote is Placer County?

A typical private-land location has about 123,463 people within 15 miles and 4,267,046 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Placer compares in California

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