Building permits, zoning and land rules in San Miguel County, Colorado

At a glance

Building permit

Generally required; West End has a building-permit exception but still uses SmartGov¹²

Zoning

Yes in unincorporated areas; standards vary by zone district³

Septic

County Environmental Health permits OWTS and inspects installations before backfill⁷⁸

RV occupancy

Recreational use is limited; RV spaces cannot be short-term rentals⁹¹⁰

Tiny home

State approval and local zoning compliance are required¹¹

Owner-builder

State exemptions are limited and do not waive county building requirements¹²¹³¹⁴

Private well

A Colorado well permit is generally required; county approval may come first⁶¹⁵

Setbacks

Set by zone district; 30 feet front in High and Medium Density, plus highway setbacks¹⁶

Who to call

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

Do you need a building permit in San Miguel County, Colorado?

Generally, yes. San Miguel County requires a development permit to construct, enlarge, alter, repair, move or demolish a building, change its occupancy, or perform regulated electrical, gas, mechanical or plumbing work.¹ A new residence uses one Development Permit covering Planning, Building, OWTS and Road & Bridge requirements.¹⁷ The county enforces the 2018 International Codes with county amendments and the Colorado Wildfire Resiliency Code.¹⁸

The West End Zone District does not require a building development permit, but every development still needs a SmartGov application; only certain submittals, reviews and inspections apply there.¹² Septic, access, well or other approvals may still apply.⁴⁵⁶ A yurt and its platform need at least a building permit and inspection.¹⁹ Colorado has limited owner exemptions for work on the owner's property, but they do not establish a blanket exemption for building a new home; ask the Building Department what permits and inspections apply.^12131420 In the West End Zone District, single-family homes and agricultural activities do not require County Planning Department approval, though other county permits may still apply.²¹ Outside the West End, we could not confirm a general agricultural-building exemption.²⁰ Building permit fees vary by project valuation, and the plan review fee is an additional 65% of the building permit fee.²² Residences of 1,800 square feet per dwelling unit receive a 25% reduction in building permit and plan review fees.²³ Land-use application fees are set in a separate county schedule.²⁴ Access to the property must exist before a building permit can be granted, and a person who owes money to the county may not receive building-permit approval.²⁵

Who issues San Miguel County building permits, and how do you reach the office?

The San Miguel County Building Department handles building permits, plan review, inspections and permit records from 333 W Colorado Avenue in Telluride; call 970-728-3923 or email building@sanmiguelcountyco.gov.²⁰ Request an inspection by opening the permit in SmartGov.²⁰

Start land-use questions with the San Miguel County Planning Department at the same street address; call 970-369-5423 for zoning, development-permit and Land Use Code guidance.²⁶ Planning permits and licenses are available through SmartGov, and a new-home Development Permit coordinates Planning, Building, OWTS and Road & Bridge review.²⁶¹⁷ Colorado manages plumbing and electrical permits and inspections.²⁷ Ask the county offices which plans and outside approvals the parcel needs before submitting, especially in the West End Zone District, where SmartGov applications remain required but review and inspection scope differs.²

Does San Miguel County have zoning?

Yes. Unincorporated San Miguel County has county zoning, and a land-use permit is required for most development.³ Use and dimensional standards vary by zone district, and the county publishes a zoning map and interactive Zone District Finder.²⁸²⁹ Incorporated municipalities may administer their own rules, so confirm which jurisdiction controls the parcel.³

Setbacks vary by zone district: in the High Density district, buildings permitted by right need 30-foot front, rear and side setbacks, while the Medium Density district uses 30 feet in front and 20 feet at the rear and sides.¹⁶ Separate highway setbacks of 200 feet from scenic highways and 100 feet from major highways also apply, and reductions may be available through Planning Commission review.¹⁶ In the Open Space district the maximum building height is 25 feet.³⁰ We could not confirm one countywide minimum home size, minimum lot size or lot-coverage limit, so ask Planning to identify the exact district and dimensional standards before drawing a site plan.²⁶ A yurt may be a primary dwelling or, depending on the zone, an accessory dwelling or caretaker unit; an accessory structure requires an existing primary dwelling.³¹ Colorado-regulated tiny homes may be approved for long-term living, but state approval does not override local zoning.¹¹ Dividing land also requires county review, and even listed subdivision exemptions require an approved, recorded final plat.³²

How do septic permits work in San Miguel County?

San Miguel County Environmental Health administers permitting, installation, repair and replacement of on-site wastewater treatment systems in the county.⁷ Contact Environmental Health at 970-369-5442 or kevinc@sanmiguelcountyco.gov.³³ A Development Permit is required before constructing or modifying an OWTS, although county material gives inconsistent geographic exceptions; ask Environmental Health about the exact parcel.⁴³³

Before backfilling, San Miguel County and the design engineer must visually inspect an installed OWTS; the applicant must provide 72 hours' notice for required inspections.⁸ For a residence or bedroom addition on a new, replaced or enlarged OWTS, the county will not issue a certificate of occupancy until it approves the final record letter and drawing.³⁴ Only about 11.8% of mapped county soils avoid a severe-limitation rating for a conventional drain field, so allow for parcel-specific soil evaluation and a potentially more complex design.³⁵ Composting toilets are allowed for yurts and similar dwellings, but sink, tub and shower greywater must be handled properly and cannot drain onto the ground.³⁶

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

San Miguel County allows a landowner or guests to occupy tents or RVs for recreation or vacation under the Land Use Code.³⁷ If occupancy exceeds 14 days in a calendar quarter, only one RV or temporary shelter may be occupied at a time; more than one beyond that threshold requires a Temporary Use Permit.⁹ RVs and camping spaces cannot be offered as short-term rentals.¹⁰ An RV used as a temporary dwelling during home construction requires a valid permit for the permanent home plus connections to its water and sewage systems.⁹

A Colorado-regulated tiny home can be approved for long-term living after state plan approval and compliance with codes and local zoning.¹¹ The one county tiny-home rule we found is in the Community Housing (CH) zone district, which applies within the Telluride R-1 School District boundaries and requires rezoning to CH: tiny homes, RVs, yurts and similar alternative living spaces are limited to no more than 20 percent of total units, through One-Step Planning Commission Review on parcels of 5 acres or less and Two-Step Special Use Permit Review on larger parcels.³⁸ Outside that district, San Miguel County's tiny-home rule and minimum dwelling size remain unconfirmed, so ask Planning before buying a unit.²⁶ A dwelling yurt needs water plus electrical and plumbing permits; a private supply needs a state well permit and a county Development Permit before drilling.³⁹¹⁵

Building a home in San Miguel County: what are the steps?

1. Ask Planning to confirm the governing jurisdiction, zone, allowed residential use and dimensional standards.³²⁶
2. Confirm access; a new county-road driveway needs a Development Permit, while direct state-highway access needs a Colorado permit.⁵⁴⁰
3. Resolve wastewater service with Environmental Health and apply for an OWTS Development Permit when needed.⁴³³
4. For a private well, obtain the state well permit and confirm whether county development approval must precede drilling.⁶¹⁵
5. Apply through SmartGov for coordinated Planning, Building, OWTS and Road & Bridge review; West End projects use SmartGov too.¹⁷²
6. Follow the county's adopted building codes, obtain applicable state plumbing and electrical approvals, then request county inspections through SmartGov.¹⁸²⁷²⁰
7. Have the OWTS inspected before backfilling and complete final approval before use.⁸⁴¹

What should you check before buying land in San Miguel County?

Confirm zoning, legal access, water, septic feasibility and subdivision status before treating a listing as buildable. San Miguel County maps zoning by district, regulates subdivisions and requires a Development Permit for a new county-road access.²⁹³²⁵ A groundwater well generally needs state permitting, and a dwelling yurt needs county development approval before drilling.⁶⁴² Conventional septic feasibility deserves early attention because only about 11.8% of mapped soils avoid severe limitations for a conventional drain field.³⁵

Terrain and public land can narrow choices: about 39.9% of county land has a slope of 15% or less, while about 61.5% is federally owned.⁴³⁴⁴ Verify the surveyed building envelope, easements and access on the parcel itself. Development in regulated floodplains must meet local standards that equal or exceed federal minimum criteria and comply with state rules.⁴⁵ The county's Land Use Code and Floodplain Regulations apply in FEMA-mapped flood-hazard areas, with additional standards in the regulatory floodway.⁴⁶ The effective property-tax rate is about 0.3%, with a median annual bill around $1,599.⁴⁷⁴⁸

Watch-outs

• The West End Zone District exception changes building review but does not remove the SmartGov application or automatically waive septic, access, well, plumbing or electrical approvals.¹²⁴⁵²⁷
• The county's reviewed OWTS material contains inconsistent geographic exception language; ask Environmental Health whether an OWTS Development Permit is required for the exact parcel.⁴³³
• Colorado's owner exemptions are limited and do not establish a blanket exemption for constructing a new home; San Miguel County's minimum dwelling size and county-specific tiny-home rule remain unconfirmed, so ask Building and Planning before relying on any of them.^1213142026

Sources

1. Permit Central, quoted and re-checked
2. Permit Central, quoted and re-checked
3. Land Use Code, quoted and re-checked
4. OWTS Permit Application 2023, quoted and re-checked
5. Permit Central, quoted and re-checked
6. Water Administration (Colorado statewide rule), quoted and re-checked
7. On-Site Wastewater Treatment (Septic) Systems, quoted and re-checked
8. OWTS Permit Application 2023, quoted and re-checked
9. Camping on Private Property FAQs, quoted and re-checked
10. Camping On Private Property FAQs, quoted and re-checked
11. Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
12. Colorado Revised Statutes 2026, Title 30, § 30-11-125 (Colorado statewide rule), quoted and re-checked
13. Colorado Revised Statutes 2026, Title 12, § 12-115-116 (Colorado statewide rule), quoted and re-checked
14. Colorado Revised Statutes 2026, Title 12, § 12-155-118 (Colorado statewide rule), quoted and re-checked
15. sanmiguelcountyco.gov, quoted and re-checked
16. San Miguel County Land Use Code Article 5 — Standards, quoted and re-checked
17. Planning, quoted and re-checked
18. Building, quoted and re-checked
19. Yurts, quoted and re-checked
20. San Miguel County Building Department (sanmiguelcountyco.gov)
21. West End Zone District Development FAQ, quoted and re-checked
22. Building Permit Fees, quoted and re-checked
23. Building Permit Fees, quoted and re-checked
24. Schedule of Land Use Application Review Fees, quoted and re-checked
25. San Miguel County Land Use Code Article 3, quoted and re-checked
26. San Miguel County Planning Department (sanmiguelcountyco.gov)
27. Residential Development Application Submittal Requirements, quoted and re-checked
28. San Miguel County Land Use Code Article 5 — Standards, quoted and re-checked
29. Land Use Code, quoted and re-checked
30. San Miguel County Land Use Code Article 5, quoted and re-checked
31. Yurts, quoted and re-checked
32. San Miguel County Land Use Code Article 3, quoted and re-checked
33. San Miguel County Department of Environmental Health (sanmiguelcountyco.gov)
34. OWTS Permit Application 2023, quoted and re-checked
35. 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
36. Yurts, quoted and re-checked
37. Camping on Private Property FAQs, quoted and re-checked
38. Land Use Code § 5-324 — Community Housing (CH), quoted and re-checked
39. Yurts, quoted and re-checked
40. Access Permits | Frequently Asked Questions (Colorado statewide rule), quoted and re-checked
41. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
42. Yurts, quoted and re-checked
43. Share of land at 15% slope or less: Bolthole Index county data
44. Federal land share: Bolthole Index county data
45. SB24-179 Floodplain Management Program (Colorado statewide rule), quoted and re-checked
46. San Miguel County Land Use Code Article 5, quoted and re-checked
47. Effective property tax rate: Bolthole Index county data
48. Median property tax bill: Bolthole Index county data

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