Bolthole Index

Ouray County, Colorado

Building permits, zoning and land rules in Ouray County, Colorado

63Index Score / 100
#11 of 64 in Colorado

Unincorporated Ouray County, Colorado requires building permits for habitable structures regardless of size, with limited exceptions for minor and agricultural structures1. Ouray County Land Use & Planning handles county building permits and zoning; county septic permits are separate approvals23. Building and septic applications go through CloudPermit, with plans submitted as PDFs4.

At a glance

Building permit
Required for habitable structures in unincorporated areas, with limited exceptions5
Zoning
Yes; unincorporated land is divided among eight zones6
Septic permit
Required for new, altered or repaired systems; apply through CloudPermit78
RV living
Long-term-camping applications go through CloudPermit; ask Land Use about duration and use92
Tiny home
A dwelling needs county approval, a permanent engineered foundation and minimum dwelling features1011
Owner-builder
Limited electrical and plumbing license exemptions; building permits and inspections still apply121314
Private well
A state permit is required, subject to exceptions15
County-road driveway
An address and driveway application is required for a new driveway or first improvement16

Who to call

Building permits

Ouray County Land Use & Planning Department

Planning, zoning, building permits and county septic permits

970-626-9775

111 Mall Road, Ridgway, CO 81432 (mailing: PO Box 28, Ridgway CO 81432)

Online permits →

Roads & driveways

Ouray County Road & Bridge Department

County-road address and driveway applications and county road questions

970-626-5391

111 Mall Road, P.O. Box 456, Ridgway, CO 81432

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Ouray 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 Ouray County, Colorado?

Unincorporated Ouray County requires a building permit for every structure with habitable space, regardless of size1. Tool sheds and other premanufactured buildings of 200–499 square feet also need a building permit, though not an engineered foundation1. Certain agricultural structures qualify for an exception only on at least 35 acres outside a subdivision, with agricultural tax status and exclusively agricultural use; mining claims above 9,480 feet need direct inquiry to Land Use117. Ouray County has re-adopted the 2018 International Building Code and International Energy Conservation Code18. Colorado allows limited license exemptions for owners personally doing electrical or plumbing work on their own property; rental properties are excluded, electrical work excludes property generally open to the public, and plumbing work excludes commercial or industrial buildings1213. Qualifying homeowners still need electrical or plumbing permits before work begins, and county building inspections and occupancy approval remain required1914.

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

The Ouray County Land Use & Planning Department handles county building permits, planning and zoning at 111 Mall Road, Ridgway; call 970-626-97752. Submit building and septic applications through CloudPermit with PDF plans; paper applications are not accepted4. Ask Land Use for a valid fee estimate: published building-fee schedules are estimates, and separate plan-check, address, site-development, septic and road-impact charges may apply2021. Inside the City of Ouray, the city handles residential building permits and requires site-development approval first; septic permits remain with Ouray County Land Use222324. Building projects require staged inspections, with foundation inspections performed by a Colorado-registered professional engineer at the permittee’s expense and state electrical and plumbing inspections scheduled separately25. Request building inspections at least 24 hours ahead; occupancy requires a Certificate of Occupancy after required inspections and corrections2627.

Does Ouray County have zoning?

Unincorporated Ouray County has eight zoning districts; uses may be allowed by right or require a special-use permit, and new structures may need site-development approval62829. Inside the City of Ouray, city zoning governs uses and dimensions; septic permits remain with Ouray County Land Use302324. The recorded Official Zoning Map controls if the code copy conflicts; county overlay districts include Ridgway UGMA, Ridgway AOI, Ouray UGMA and Ouray AOI31. Rural districts commonly require 35 acres, while Colona allows a 6,000-square-foot minimum buildable lot; district exceptions apply32. Colona also limits the floor-to-lot ratio to 1:133. Buildings are generally capped at 35 feet, with stricter High Alpine rules or different approved permit terms possible34. For parcels of 2 acres or less under Section 3.8H2, side and rear setbacks are 10 feet and the front setback is 25 feet; structures must also be at least 100 feet from the centerline of U.S. Highway 550 or Colorado Highway 6235. Ask Land Use which district, overlays and setbacks govern the parcel before drawing a site plan31362.

How do septic permits work in Ouray County?

The Ouray County Land Use Department administers county septic permits separately from building permits and zoning approval242. A septic permit is required before installing, altering, expanding or repairing an onsite wastewater treatment system; plans must be stamped by a Colorado-licensed professional engineer3. The current application fee is $365, and the tank or soil treatment area must be 50 feet from a lake, water course, irrigation ditch, stream or wetland7. Give Land Use at least 48 hours' notice for septic-tank and soil-treatment-area inspections, and have the design engineer inspect the complete system before backfill37. Incinerating, composting and chemical toilets may require local Board of Health approval, but they do not reduce the required engineered wastewater-system size38. Only 4.8% of county soils are rated without severe limitations for a conventional drain field, so make wastewater feasibility an early purchase contingency39.

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

Ouray County provides a long-term-camping application through CloudPermit, but we could not confirm the complete private-land RV occupancy limits; ask Land Use about the parcel, setup and length of stay92. Ouray County defines a tiny home as a dwelling of 800 square feet or less, excluding lofts10. A tiny home used as a dwelling in unincorporated Ouray County needs a building permit and an engineered foundation regardless of size405. Full-time occupancy or a frame or axles triggers the county’s permanent engineered-foundation requirement, with the frame or axles removed10. A dwelling must have a complete kitchen and bathroom, adequate water, sewage and heat, and at least one room of 70 square feet, with no horizontal dimension under 7 feet except in a kitchen11. Tiny homes must meet the county’s dwelling standards and obtain a Certificate of Occupancy before move-in11.

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

  1. Ask Land Use to confirm the zoning district, allowed use, lot size, setbacks, building height and any site-development review28342.
  1. Confirm driveway requirements with Road & Bridge41. A first improvement, new driveway or new single-family home requires an Address and Driveway Permit Application16.
  1. Establish water and wastewater service; a planned development may use an approved provider, qualifying well, central sewer or compliant onsite system4243.
  1. Obtain the septic permit before installing or changing an onsite system7.
  1. Submit building and septic plans as PDFs through CloudPermit; paper applications are not accepted4.
  1. Arrange the county site inspection before excavation or construction, then schedule building and septic inspections; keep the septic system open until inspected1444.
  1. Complete corrections and obtain the Certificate of Occupancy before moving into the building27.

What should you check before buying land in Ouray County?

Confirm zoning, access, water, wastewater and flood exposure before treating a parcel as buildable281645. County site inspection includes floodplain and geological-hazard review where applicable, and the county provides a separate floodplain permit application46. Only 46.5% of county land has a slope of 15% or less, and 68.8% is forested4748. New groundwater wells generally need a state permit, subject to exceptions and basin rules15. Planned developments and subdivisions undergo county review for zoning, roads, water, wastewater and access49. A planned unit development using onsite wastewater generally needs at least one acre per lot, making early wastewater review especially important50. A short-term rental in unincorporated Ouray County requires prior approval from Land Use; permits are limited, so confirm availability before counting on rental income512.

Watch-outs

  • Colorado’s homeowner electrical and plumbing license exemptions exclude rental property and certain other uses; qualifying owners still need installation permits, inspections and county occupancy approval12131914.
  • A long-term-camping permit path exists, but we could not confirm the complete private-land RV occupancy limits; ask Land Use what the parcel and proposed stay require92.
  • Only 4.8% of soils are rated without severe limits for a conventional drain field, so septic feasibility can change a homesite's viability39.

Sources

  1. What Requires a Building Permit, quoted and re-checked
  2. Ouray County Land Use & Planning Department (ouraycountyco.gov)
  3. Ouray County On-site Wastewater Treatment Systems Ordinance, quoted and re-checked
  4. Forms & Applications, quoted and re-checked
  5. What Requires a Building Permit, quoted and re-checked
  6. Ouray County Land Use Code, quoted and re-checked
  7. Septic System (OWTS) Permit Application, quoted and re-checked
  8. Forms & Applications, quoted and re-checked
  9. Forms & Applications, quoted and re-checked
  10. ouraycountyco.gov, quoted and re-checked
  11. Minimum Dwelling Standards, quoted and re-checked
  12. Colorado Revised Statutes 2024, Title 12 — Professions and Occupations, quoted and re-checked
  13. Colorado Revised Statutes 2024, Title 12 — Plumbing exemptions, quoted and re-checked
  14. Ouray County Building Permit Application, quoted and re-checked
  15. Water Administration (Colorado statewide rule), quoted and re-checked
  16. Building Permit Application, quoted and re-checked
  17. ouraycountyco.gov, quoted and re-checked
  18. Building Information, quoted and re-checked
  19. HB22-1346 Electrician Plumber Licensing Apprentice Ratio, quoted and re-checked
  20. Building Information, quoted and re-checked
  21. ouraycountyco.gov, quoted and re-checked
  22. Ouray: 7-5 Development Review Procedures (Ouray County), quoted and re-checked
  23. Ouray: Septic System (OWTS) Permit Application (Ouray County), quoted and re-checked
  24. Resolution No. 2024-037 Revised Land Use Fee Schedule, quoted and re-checked
  25. ouraycountyco.gov, quoted and re-checked
  26. Building Information, quoted and re-checked
  27. ouraycountyco.gov, quoted and re-checked
  28. Section 3 – Zoning, quoted and re-checked
  29. Section 3 – Zoning, quoted and re-checked
  30. Ouray: 7-6 Zoning Districts (Ouray County), quoted and re-checked
  31. Land Use Code, quoted and re-checked
  32. Section 3 – Zoning, quoted and re-checked
  33. Section 3 – Zoning, quoted and re-checked
  34. Section 3 – Zoning, quoted and re-checked
  35. Section 03 Zoning, quoted and re-checked
  36. Section 3 – Zoning, quoted and re-checked
  37. Ouray County On-site Wastewater Treatment Systems Ordinance, quoted and re-checked
  38. Incinerating, Composting and Chemical Toilets, quoted and re-checked
  39. 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
  40. What Requires a Building Permit, quoted and re-checked
  41. Ouray County Road & Bridge Department (ouraycountyco.gov)
  42. Section 06 Planned Unit Developments, quoted and re-checked
  43. Section 06 Planned Unit Developments, quoted and re-checked
  44. Building Permit Application, quoted and re-checked
  45. SB24-179 Floodplain Management Program (Colorado statewide rule), quoted and re-checked
  46. ouraycountyco.gov, quoted and re-checked
  47. Share of land at 15% slope or less: Bolthole Index county data
  48. Wooded share of land: Bolthole Index county data
  49. Land Use Code, quoted and re-checked
  50. Section 06 Planned Unit Developments, quoted and re-checked
  51. Short Term Rental Permitting, quoted and re-checked

Written October 12, 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, Ouray County has countywide zoning.

RuleOuray CountySan Juan CountyHinsdale CountyMontrose CountySan Miguel CountyMineral CountyDolores County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredNot required
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Land Use Dept.County Env. HealthCounty Building Dept.County Board of HealthCounty OWTSCounty Land Use OfficeDolores County

County locator

Ouray County in Colorado

63
County map
Ouray County highlighted among the Colorado counties · colored by Index score

How Ouray County scores

Seclusion89100% ev.
Self-Sufficiency48100% ev.
Admin Boringness4190% ev.
Durability36100% ev.
Property Autonomy75100% ev.
Carry Cost74100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$812kTypical home
0.3%Property tax
$2,949Land / acre
21.5"Annual rain
29.4% of yrsSevere drought
0 / yr (+0)Mid-century 100°F days
20.3 daysMid-century dry spell
0.99" (+5.5%)Mid-century 1-day rain
1.25×Wildfire change factor
100%Forward climate coverage
$1,994Home insurance / yr
3.6% / yrInsurance growth
1.27%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
96,684People within 2 hr
5,469Radius comparison (15 mi)
9.6People / sq mi
45.7%Federal land
46.5%Land at 15% slope or less
4.8%Soils rated "not limited" for septic (strict USDA rating)
15,607 acWorkable land screen
68.8%Wooded land
30 tonsBiomass / forest ac
42.1°FAvg temp

Scout Ouray 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 Ouray 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 Ouray 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 Ouray County

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

Ouray County rules

  • Building permitRequired

    Habitable structures and other construction in unincorporated Ouray County.

    • Tool sheds and other premanufactured buildings 200-499 square feet require a permit but not an engineered foundation.
    • Structures with habitable space require a permit regardless of size.
    • Certain agricultural structures are exempt when they are on 35 acres or more, not in a subdivision, have agricultural taxing status, and are used exclusively for agriculture.
    • The guide states it cannot be applied unilaterally to mining claims above 9,480 feet.
    “All Structures with Habitable Space (regardless of size)”
    One more reviewed finding on this topic
    • Required — Habitable structures and other construction in unincorporated Ouray County.
      “All Structures with Habitable Space (regardless of size)”
  • Owner-builder exemptionConditional

    County-administered building projects in Ouray County, including projects where the owner performs electrical or plumbing work under the Colorado homeowner qualified-applicant provisions.

    • The county building process requires a site inspection before excavation or construction begins.
    • County construction inspections include framing, insulation, drywall, septic, and final inspection requirements.
    • The framing inspection requires rough electrical and plumbing work to be approved by the State Electrical and Plumbing Inspectors; those inspections are scheduled separately.
    • The county final inspection requires approved final electrical and plumbing inspections, wildfire mitigation and visual-impact compliance, prescribed 2018 IECC compliance tests, and the required address posting.
    • Occupancy is not permitted until a Certificate of Occupancy is issued.
    • The Certificate of Occupancy is issued only after all required inspections are complete, the project complies with approved plans and specifications, the Uniform Building Code, and local rules and regulations; outstanding code violations must be corrected.
    • The building official may issue a Temporary Certificate of Occupancy only when remaining work does not involve fire, safety, or structural issues.
    • The county source does not expressly state that the Colorado homeowner electrical or plumbing provision waives any county building-permit, county-inspection, or Certificate-of-Occupancy requirement.

    reinspection fee: 47 USD per hour (Payable at the time of reinspection.)

    “A Certificate of Occupancy (C.O.) will be issued after all required inspections have been completed and the project complies with approved plans and specifications, the Uniform Building Code, and all local rules and regulations. Outstanding code violations must be corrected before a Certificate of Occupancy can be issued. The building official may issue a Temporary C.O. if work to be completed does not involve fire, safety, or structural issues.”
  • Building code adoptedAdopted

    Building-code administration by Ouray County.

    • The page also references a separate resolution adopting the codes.
    “Ouray County has re-adopted the 2018 International Building Code, 2018 International Code, and the 2018 International Energy Conservation Code.”
    One more reviewed finding on this topic
    • Adopted — County building regulation administered by the Ouray County Land Use Department.
      “Ouray County has re-adopted the 2018 International Building Code, 2018 International Code, and the 2018 International Energy Conservation Code.”
  • InspectionsRequired

    County-regulated building projects.

    • Required inspections include site, footing/foundation, framing, insulation, drywall nailing, septic where applicable, and final inspection.
    • Foundation inspections must be performed by a Colorado-registered professional engineer at the permittee’s expense.
    • State electrical and plumbing inspections are scheduled separately.
    “All inspection requests must be made at least 24 hours in advance of the requested inspection date / time.”
    One more reviewed finding on this topic
    • Required — County building permits.
      “All inspection requests must be made at least 24 hours in advance of the requested inspection date / time.”
  • Certificate of occupancyRequired

    Occupancy of county-regulated buildings.

    • All required inspections must be completed.
    • The project must comply with approved plans, specifications, the Uniform Building Code, and local rules.
    • Outstanding code violations must be corrected.
    • A temporary C.O. may be issued if remaining work does not involve fire, safety, or structural issues.
    “Occupancy is not permitted until a Certificate of Occupancy is issued!”
  • County-wide zoningPresent

    Unincorporated Ouray County.

    • The Land Use Code establishes county zones and an Official Zoning Map.
    “The County is hereby divided into eight (8) zones, as follows:”
    One more reviewed finding on this topic
    • Present (with conditions) — County zoning in unincorporated Ouray County.
      “All Zones shall be designated on the “Official Zoning Map of Ouray County” which is on file in the records of the County Clerk and Recorder.”
  • Local zoningPresent (with conditions)

    County zoning for unincorporated Ouray County; incorporated City of Ouray and Town of Ridgway may apply their own municipal rules.

    • County zoning applies to unincorporated areas; incorporated municipalities are separate authorities.
    “All Zones shall be designated on the “Official Zoning Map of Ouray County” which is on file in the records of the County Clerk and Recorder.”
  • Zoning districtsPublished

    County zoning districts and Official Zoning Map.

    • The Official Zoning Map is maintained in County Clerk and Recorder records; the recorded map controls if it conflicts with the code copy.
    “All Zones shall be designated on the “Official Zoning Map of Ouray County” which is on file in the records of the County Clerk and Recorder.”
    One more reviewed finding on this topic
    • Published — County zoning districts and the Official Zoning Map for unincorporated Ouray County.
      “The following Municipal Overlay Districts are hereby established: (1) The Ridgway UGMA (2) The Ridgway AOI (3) The Ouray UGMA (4) The Ouray AOI”
  • Minimum dwelling sizeSpecified

    A structure in unincorporated Ouray County that is intended to qualify as a dwelling unit.

    • The county standard requires a sleeping area with an egress window or three-foot door opening to a yard or court.
    • The dwelling unit must include one complete kitchen with a stove and sink and one complete bathroom.
    • The dwelling unit must include one room measuring at least 70 square feet.
    • No horizontal dimension may be less than seven feet, except in a kitchen.
    • Smoke and carbon monoxide detectors must comply with State of Colorado and International Residential Code requirements.
    • Lighting and ventilation must meet International Residential Code requirements.
    • The dwelling unit must have one exit door at least three feet wide.
    • Adequate sewage disposal, adequate water supply, adequate heating under R303.10, and an adequate engineered/permanent foundation under Ouray County Resolution 2010-18 are required.
    • Accepted State Plumbing and Electrical final inspections are required.
    • Tiny houses must comply with the IRC except as otherwise stated in Appendix Q.
    • A Certificate of Occupancy issued by the Ouray County Building Inspector is required.

    minimum room area: >= 70 square feet · minimum horizontal dimension: >= 7 feet (except in a kitchen) · minimum exit-door width: >= 3 feet

    “One room measuring a minimum of 70 square feet • No horizontal dimension less than seven (7) feet except in a kitchen”
  • Minimum lot sizeSpecified

    Planned Unit Developments in Ouray County.

    • One-acre minimum applies when served by OWTS.
    • Smaller lots may be allowed with central sewage treatment if overall density requirements are maintained.

    minimum lot size: 1 acre (smaller lots may be allowed with central sewage treatment)

    “MINIMUM LOT SIZE: One acre, if served by an on-site wastewater treatment system (OWTS). Smaller lots may be allowed if connected to a central sewage treatment system, provided the overall density requirements for the zone, district or PUD are maintained.”
    One more reviewed finding on this topic
    • Specified — Minimum lot sizes vary by County zoning district.
      “Minimum Lot Size: The minimum buildable lot size for allowed uses shall be 6,000sq ft.”
  • SetbacksSpecified

    Structures on parcels of two acres or less in the Section 3.8H2 district.

    • The standard applies to parcels of two acres or less.
    • No structure may be closer than 100 feet from the centerline of U.S. Highway 550 or Colorado Highway 62.

    side setback: 10 feet (Parcels must have an area of two acres or less.) · back setback: 10 feet (Parcels must have an area of two acres or less.) · front setback: 25 feet (Parcels must have an area of two acres or less.) · highway centerline setback: >= 100 feet (Applies to U.S. Highway 550 and Colorado Highway 62.)

    “the minimum setback for structures shall be ten (10) feet from the side and back property lines and twenty-five (25) feet from the front property line”
    One more reviewed finding on this topic
    • Specified — Structure setbacks in County zoning districts.
      “All structures shall be located at least twenty-five (25) feet from any property lines unless approved otherwise in a PUD”
  • Lot coverageSpecified

    Floor-to-lot coverage control in the Colona zoning district.

    • The source uses the term floor-to-lot ratio rather than a conventional lot-coverage percentage.

    maximum floor-to-lot ratio: 1:1

    “Floor-to-Lot Ratio: Maximum floor-to-lot ratio shall not exceed 1:1.”
  • Building heightSpecified

    Buildings and structures in County zoning districts.

    • A lower height may be required by High Alpine Development Regulations.
    • Approved PUDs and special-use permits may provide different requirements.

    maximum height: <= 35 feet (Unless a lower High Alpine requirement, approved PUD, or special-use permit applies.)

    “In all zones, the maximum height of a building or other structure shall not exceed thirty-five (35) feet, unless a height of less than thirty-five (35) feet is required within the High Alpine Development Regulations (See Section 24 of this Code), an approved PUD, or as otherwise provided in a special use permit.”
  • Camping on your landLimited

    Long-term camping regulated by Ouray County.

    • A long-term camping permit application is provided by the County.
    • Applications must be submitted online through Cloudpermit and hard-copy applications are not accepted.
    “Please note that all permits for buildings, septic systems, short-term rental permits, and long-term camping permits must now be applied for on-line, in Cloudpermit.”
  • Tiny homesLimited

    Tiny homes intended for full-time occupancy or having a frame or axles in unincorporated Ouray County.

    • The county defines a tiny home as a dwelling 800 square feet or less excluding lofts.
    • Full-time occupancy or a frame or axles requires removal and installation on a permanent engineered foundation.
    • The source establishes a foundation condition, not unrestricted occupancy.

    tiny-home floor area: <= 800 square feet or less, excluding lofts

    “All tiny homes intended for full time occupancy or having a frame or axels must be removed and the structure installed on a permanent engineered foundation.”
    One more reviewed finding on this topic
    • Limited — Tiny homes used as dwelling units in unincorporated Ouray County.
      “*Note that any dwelling unit will require an engineered foundation – Tiny homes are not excluded from that requirement.”
  • Who permits septicCounty (with conditions)

    OWTS/septic permitting and fee administration in Ouray County.

    • The County Board acts as the Board of Health for the referenced OWTS fee approval.
    • State and County OWTS regulations may both apply.
    “the Board acting as the Board of Health also approves the amended fees set forth for OWTS (Septic) Permits”
  • Septic permitRequired

    Installing, altering, expanding, or repairing an OWTS within the ordinance jurisdiction.

    • An OWTS permit must not be issued where feasible public sewer service is available unless the municipality or special district authorizes it or determines service is infeasible.
    • Plans must be stamped by a Colorado-licensed professional engineer.
    • An OWTS permit expires after one year if construction has not commenced.
    • Plan changes invalidate the permit unless written approval is obtained.

    permit expiration if construction has not commenced: 1 year (new application required after expiration) · permit surcharge: 23 USD ($3 retained by Land Use Department and $20 transmitted to state treasurer)

    “Prior to installing, altering, expanding or repairing an OWTS, the applicant must obtain a permit from the Ouray County Land Use Department.”
    One more reviewed finding on this topic
    • Required — New, altered, repaired, or emergency-use OWTS work in unincorporated Ouray County.
      “Prior to installing, altering, expanding or repairing an OWTS, the applicant must obtain a permit from the Ouray County Land Use Department.”
  • Septic inspectionRequired

    OWTS installation in the ordinance jurisdiction.

    • The applicant must give at least 48 hours’ notice before septic-tank and soil-treatment-area inspections.
    • The design engineer must inspect the entire OWTS before backfilling and submit a record drawing.

    inspection notice: >= 48 hours

    “The applicant must notify the Ouray County Land Use Department at least 48 hours prior to inspection”
    One more reviewed finding on this topic
    • Required — Septic construction inspection for building-permit work in unincorporated Ouray County.
      “g) Septic - Occurs following the approval of the general layout with the tank and lines or infiltrator system in place, all other components or materials in place, and prior to back-fill. The engineering firm responsible for the system design will perform these inspections with building inspector.”
  • Off-grid sanitationLimited

    Incinerating, composting, and chemical toilets in Ouray County.

    • Local Board of Health approval may be required.
    • A full engineered OWTS remains required and alternative toilets do not reduce OWTS size.
    • Portable chemical toilets are prohibited in permanently occupied buildings except during construction or emergencies.

    composting-toilet residue removal threshold: 75 percent capacity

    “The local board of health may permit incinerating, composting and chemical toilets.”
    One more reviewed finding on this topic
    • Limited — PUD development using an on-site wastewater treatment system.
      “Sanitary sewage treatment shall be provided by a Title 32 special district, municipality, or OWTS that meets the requirements of state and County regulations.”
  • Mandatory utility hookupConditional

    PUD development reviewed under Section 6.

    • Water may be provided by a Title 32 special district, water conservancy district, an on-site well demonstrating sustainable yield and availability, or another approved provider.
    • Sanitary sewage treatment may be provided by a Title 32 special district, municipality, or OWTS meeting state and County regulations.
    “Water service shall be provided by a Title 32 special district, water conservancy district, an on-site well”
  • Agricultural exemptionAvailable (with conditions)

    Certain agricultural structures.

    • The structure must be on at least 35 acres, not in a subdivision, have agricultural taxing status, and be used exclusively for agriculture.

    minimum acreage: >= 35 acres

    “Certain Agricultural Structures – 35 Acres +, not in a Subdivision, Ag. Taxing status, used exclusively for Ag.”
  • Subdividing landRegulated (with conditions)

    Planned Unit Developments and subdivision-related development in Ouray County.

    • PUD applications are reviewed by the Planning Commission or Joint Planning Board and BOCC.
    • Underlying zoning, road, water, wastewater, access, and other Land Use Code standards apply.
    “Section 07: Improvement Standards (PUD's, Subdivisions, and Certain SUP's)”
  • Driveway accessLimited

    New driveway access and first improvements associated with building-permit projects in unincorporated Ouray County.

    • If a project is the first improvement to the property or requires a new driveway, an Address and Driveway Permit Application must be submitted.
    • New single-family homes must submit an Address and Driveway Permit Application.
    • The driveway standards include a 12-foot driving surface, 32-foot interior radii, 16-foot driveway opening, maximum 12 percent grade for new subdivision lots, adequate sight distance, and a 60-to-90-degree approach angle.

    driving-surface width: >= 12 feet · interior radii: >= 32 feet · driveway opening: >= 16 feet · grade for new subdivision lots: <= 12 percent · roadway approach angle: 60 to 90 degrees

    “If the project is the first improvement to the property, or will require a new driveway, an Address and Driveway Permit Application must be submitted.”
  • Building in a floodplainLimited

    County-regulated construction where floodplain or geological hazards may apply.

    • Floodplain review occurs if applicable during site inspection.
    • The County Land Use Code contains a Section 10 Flood Hazard Regulations.
    • A separate Flood Plain Permit Application is listed in the County forms.
    “The site inspection will include the following. a) Visual impact (if applicable) b) Flood plain, geological hazards (if applicable) c) Setbacks d) Driveway location (stake driveway) e) Propane tank and utility locations”
  • Short-term rentalsLimited

    Short-term rentals in unincorporated Ouray County.

    • Prior county Short-Term Rental Permit is required.
    • The county page states a cap of 100 permits consisting of 50 Type 1 and 50 Type 2 permits, plus 25 Type 3 permits.
    • The City of Ouray and Town of Ridgway have separate regulations.

    maximum permits: 100 permits (page also states 25 Type 3 permits are allowed) · rental duration: <= 30 days (definition on county page)

    “The operation of a short-term rental in Ouray County requires prior issuance of a Short-Term Rental Permit from the Land Use Department.”
    One more reviewed finding on this topic
    • Limited — Short-term rentals of single-family dwellings or accessory dwellings in unincorporated Ouray County.
      “The operation of a short-term rental in Ouray County requires prior issuance of a Short-Term Rental Permit from the Land Use Department.”
  • Permit feesPublished (with conditions)

    County building, septic, land-use, and related permits.

    • Building permit fees are determined under Appendix L of the 2018 International Building Code and Section 5 of Resolution 2020-04.
    • Other fees may apply, including road impact, septic, plan-check, address, and site-development fees.
    • The road-impact fee is charged to construction of all single-family dwellings.
    • A 2024 resolution approved revised fee schedules on November 19, 2024.

    road impact fee: 3244.22 USD (Charged to construction of all single-family dwellings.) · credit card processing fee: 2.4 percent (Applies to building and septic permit payments through CloudPermit.) · e-check processing fee: 1.5 USD (Applies to building and septic permit payments through CloudPermit.)

    “Credit card payments will be charged a 2.4% processing fee and e-checks will be charged $1.50.”
    One more reviewed finding on this topic
    • Published (with conditions) — Building, septic, and related permit fees.
      “Credit card payments will be charged a 2.4% processing fee and e-checks will be charged $1.50.”
  • Permit processPublished (with conditions)

    County building, septic, short-term rental, and long-term camping permit applications.

    • Applications must be submitted online in Cloudpermit.
    • Hard-copy applications are no longer accepted.
    • Building and septic plans must be submitted in electronic PDF format.
    “Hard copy applications are no longer accepted.”
    One more reviewed finding on this topic
    • Published (with conditions) — County building, septic, short-term rental, and long-term camping permits.
      “Please note that all permits for buildings, septic systems, short-term rental permits, and long-term camping permits must now be applied for on-line, in Cloudpermit. (https://cloudpermit.com/) - Hard copy applications are no longer accepted.”

Colorado rules that apply here

  • Manufactured homesAllowed (with conditions)

    Installation and resulting residential use of HUD-code manufactured homes and mobile homes in Colorado, subject to Colorado Division of Housing requirements and local zoning or building requirements.

    • HUD homes must be certified by the applicable State Administrative Agent for installation in Colorado; imported units are monitored by the State Administrative Agent of the state from which they are imported, rather than necessarily by Colorado's SAA.
    • A HUD home may be installed anywhere in Colorado only where local zoning allows it.
    • Local jurisdictions may require site mitigation to meet local wind and snow loads, but the mitigation cannot directly affect or change the construction of the home itself.
    • The Division of Housing regulates installation and installation inspections for HUD homes; mobile-home foundation and structural construction requirements are regulated by local jurisdictions with active building departments.
    • The state minimum HUD design criteria listed by the source are Wind Zone 1, Thermal Zone 3, and Middle Roof Load Zone (30 psf).

    wind zone: 1 zone · thermal zone: 3 zone · roof load zone: 30 psf (Middle Zone)

    “HUD homes [...] can be installed anywhere in Colorado as long as the local zoning allows for it.”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling unit as an accessory use to a single-unit detached dwelling in a Colorado subject jurisdiction where single-unit detached dwellings are allowed.

    • The rule applies to a subject jurisdiction: either a municipality with a population of at least 1,000 within a metropolitan planning organization, or the portion of a county within a census-designated place of at least 40,000 people that is also within a metropolitan planning organization.
    • The subject jurisdiction must allow the ADU through an administrative approval process.
    • The rule applies on or after June 30, 2025.
    • The state requirement does not establish that every Colorado municipality or county area is a subject jurisdiction.

    maximum required ADUs per single-unit detached dwelling: 1 unit · effective date: >= 2025-06-30 · qualifying municipality population: >= 1000 persons (municipality must also be within a metropolitan planning organization) · qualifying census-designated-place population: >= 40000 persons (county portion must also be within a metropolitan planning organization)

    “Section 1 requires a subject jurisdiction, on or after June 30, 2025, to allow, subject to an administrative approval process, one accessory dwelling unit”
  • Well permitRequired

    Every new groundwater-diverting well in Colorado, including residential wells, subject to statutory exemptions and basin-specific rules.

    • The Division of Water Resources administers groundwater permitting and issues permits.
    • Applicants must complete the appropriate application and pay the associated fee.
    • Statutory exemptions and additional Denver Basin or Designated Basin rules may affect the requirement or permit conditions.
    • In many areas, a well may also require an augmentation plan if its priority is not sufficient to divert in priority.

    complete-application review time: <= 49 days (DWR states review of complete new and replacement applications may take up to 49 days)

    “Every new well in the state that diverts groundwater must have a well permit.”
  • Campground & park staysAllowed (with conditions)

    Temporary overnight camping, including parking a motor home or traveler, on land and water under the control of Colorado Parks and Wildlife, including state parks and state recreation areas.

    • The source addresses lands and waters under the control of the Division of Parks and Wildlife, not all public or private land statewide.
    • Camping includes parking a motor vehicle, motor home, or traveler for the apparent purpose of overnight occupancy.
    • A commission-issued permit may be required; the statute defines permits to include campground permits and electrical hookup permits.
    • The state may charge fees for required passes or permits for use of any state park or state recreation area where supervision, maintenance, or specified facilities warrant a fee.

    overnight occupancy: true (Camping definition includes the parking of a motor vehicle, motor home, or traveler for the apparent purpose of overnight occupancy.) · permit types: campground permits; electrical hookup permits

    “Develop state parks and state recreation areas suitable for such recreational activities as camping, [...] "Camping" means [...] the parking of a motor vehicle, motor home, or traveler”
  • county zoning authorityGeneral

    Colorado counties adopting zoning plans for all or any part of unincorporated territory.

    • The county planning commission may make the zoning plan; in a county having a county planning commission, it must do so upon order by the board of county commissioners.
    • The zoning plan may regulate districts or zones, including building location, height, bulk, size, lot coverage, lot size, open spaces, population density, building and land uses, and access to sunlight for solar energy devices.
    • The plan may include regulations for uses on or along storm or floodwater runoff channels or basins only when the channel or basin has been designated and approved by the Colorado water conservation board, to lessen or avoid hazards from storm or floodwaters.
    • The statute applies to unincorporated territory and does not describe incorporated cities or towns as within this county zoning grant.
    “zoning all or any part of the unincorporated territory within such county”
  • county building authorityGeneral

    Colorado counties adopting and enforcing building codes and requiring building permits in designated unincorporated areas.

    • A board of county commissioners may adopt a building code in all or part of the county, but the area must not be within the limits of an incorporated city or town.
    • Buildings or structures used solely to shelter agricultural implements, farm products, livestock, or poultry may be excepted from the building code and permit requirement.
    • Before adoption, the county planning commission may designate part or all of the county for the building code upon request from the board of county commissioners; the board must hold a public hearing and publish notice once weekly for four consecutive weeks.
    • After adoption of the building code, construction, reconstruction, alteration, or remodeling in the designated area requires a building permit, except for the agricultural-shelter exception.
    • The board must fix a reasonable schedule of building-permit fees; no permit fee may be charged unless a qualified inspector actually performs an inspection.
    • Plans must conform to the building code, and plans and specifications generally must bear the seal of a Colorado-licensed architect or engineer unless exempted by section 12-120-403.
    • Every county adopting or updating a building code must adopt and enforce an energy code meeting or exceeding one of the three most recent International Energy Conservation Code versions under section 30-28-211.
    • The 2025 amendment to section 30-28-204 is effective January 1, 2026 and adds accessibility requirements for substantially amended or updated county building codes, with an exception for compliant one- and two-family dwellings and townhomes.
    “A board of county commissioners is authorized to adopt ordinances and a building code”

Still unanswered

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

  • Living in an RV — Occupancy of recreational vehicles on private land in unincorporated Ouray County.

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 Ouray County, Colorado

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

Ouray County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths: sparse surroundings — about 5,469 people within 15 miles and a stronger property-autonomy legal backdrop. Watch-outs: elevated current hazard exposure and more administrative friction around building and land use.

Do you need a building permit in Ouray County, Colorado?

Ouray County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Ouray County Land Use Department. 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.

How much does land cost in Ouray County, Colorado?

Land in Ouray County runs about $2,949 per acre, based on the latest county data.

What is the water situation in Ouray County?

Ouray County gets about 21.5" of rain a year, with severe drought in roughly 29.4% of years.

How remote is Ouray County?

A typical private-land location has about 5,469 people within 15 miles and 435,326 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Ouray compares in Colorado

Compare side-by-side →See all 64 Colorado counties ranked →