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

Yes. Residential construction in unincorporated Archuleta County requires a county building permit¹. Like the counties around it in Colorado, Archuleta County requires a county building permit².

Exemptions are narrow. The Building Department's current page says one-story detached storage buildings up to 120 square feet can be built without a permit and that an addition to an existing building needs one, while the 2024 residential packet allows detached accessory buildings up to 200 square feet; plan around the lower figure until the office confirms^1,2. Reroofing or residing 25% or more of the surface also needs a permit². Starting work without a required permit brings a fine equal to 100% of the permit fee¹.

The county has adopted amended building codes, and permitted residential work gets inspections at footing, stem wall, rough framing and mechanical, insulation and final stages^1,8. A single-family dwelling needs a certificate of occupancy, and using it before issuance carries a $100-per-day fine¹.

The Archuleta County Building Department issues building permits for a house, addition or other code-regulated construction in unincorporated Archuleta County. Call 970-264-1390 or visit 1122 Hwy. 84 in Pagosa Springs before preparing the application². Inside the Town of Pagosa Springs, the town sets its own zoning; we could not confirm who issues building permits there, so ask the town before assuming county rules apply^1,4.

The residential permit packet calls for a completed application, a surveyor-prepared site plan, construction plans, engineered truss drawings, access approval, sanitation documentation and proof of ownership¹. Normal processing takes at least 15 business days¹. As of August 1, 2026, the Planning Department must review and approve a proposed site plan before it goes in with a building permit application².

Fees are based on valuation and square footage and are due when the office accepts the plan submission; amounts come from the county fee schedule^1,8.

Yes. The county Planning Department administers the Archuleta County Land Use Regulations, including zoning, subdivision and floodplain rules, for unincorporated land³. The Town of Pagosa Springs is outside that jurisdiction and zones its own land under its Land Use and Development Code^1,4.

Standards depend on the parcel's zone district: AF, AR, AE, RR, R, MH, C or I¹. Minimum lot size is 160 acres in AF, 35 acres in AR, 5 acres in AE and 3 acres in RR, falling to 8,000 square feet in R¹. Front setbacks run from 100 feet in AF and 50 feet in AR to 25 feet in AE and 20 feet in RR¹. Maximum building height is 35 feet in AE, RR and R, with accessory buildings capped at 30 feet there¹. We could not confirm lot-coverage limits or an agricultural exemption; ask Planning.

Subdivision platting runs through Planning, and a building application on unplatted property under 35 acres requires chain-of-title research back to 1972 to show the parcel is legal³.

The Archuleta County Water Quality Department issues septic (onsite wastewater) permits throughout Archuleta County, including inside municipal limits⁵. Call 970-264-8342 about applications and design review⁹. An approved permit is required before installing, altering, expanding or repairing a system⁵. No permit is issued where a municipality or special district provides public sewer service, unless that provider finds service infeasible or authorizes the permit⁵. Pagosa Area Water and Sanitation District has its own fees and procedures for new construction¹.

A permit expires after 1 year if construction has not started, and installation must finish within 2 years unless Water Quality extends it in writing⁵. Water Quality can inspect the tank and soil treatment area before backfill, and septic work must be signed off before final building approval^5,10.

Soils make this an early question: only about 0.1% of county soils are rated "not limited" for a conventional drain field, a strict rating, so expect a site evaluation and possibly an engineered system¹¹.

We could not confirm Archuleta County's rules for temporary camping or long-term RV occupancy on private land. Ask the Planning Department how the parcel's zone district applies to the stay, utilities and wastewater before relying on an RV during construction. We also could not confirm the county's manufactured-home or accessory-dwelling rules; Colorado allows a HUD manufactured home anywhere local zoning allows it¹².

For a permanent residence, county materials set a minimum floor area of 400 square feet, excluding covered porches, patios and decks¹. A tiny house of 400 square feet or less is regulated under Appendix Q of the residential code, not exempt from permits¹. Colorado also allows state-approved tiny homes for long-term living where local zoning permits the installation¹². The county page we reviewed does not establish a general owner-builder exemption; ask Building before assuming one.

A practical order for an unincorporated Archuleta County home:

1. Ask Planning to confirm the parcel's zone district, legal-lot status, setbacks and floodplain status^1,3,6.
2. Confirm access. Ask the Archuleta County Road and Bridge Department whether a county access permit is needed; the county fee schedule lists an Access Permit at $120¹. Direct access to a state highway needs a state access permit, with a $50 fee for single-family residential¹³.
3. Resolve wastewater: public sewer where provided, otherwise a Water Quality septic permit⁵.
4. If using groundwater, get a Colorado Division of Water Resources well permit⁷.
5. Get Planning's site-plan approval, then assemble the surveyor site plan, construction documents, access approval and ownership evidence for Building^1,2.
6. Allow at least 15 business days for normal processing¹.
7. Schedule the building and septic inspections and obtain the certificate of occupancy before moving in^1,10.

Start with the parcel, not the listing. Confirm the zone district, legal-lot history, minimum lot size, setbacks and height limit with Archuleta County Planning^1,3. Check the floodplain: any development, including homes and agricultural or accessory structures, on a floodplain parcel requires a Floodplain Development Permit⁶. Confirm whether wastewater will be public sewer or an onsite system, and budget for a site evaluation^5,11.

Water and access can control the schedule. A new groundwater well needs a Colorado permit, and the state says an augmentation plan may be needed for wells that are not senior enough⁷. Terrain matters too: about 45.3% of county land is at a slope of 15% or less, so verify the actual building envelope¹¹. The nearest city of 100,000 or more is about 135 miles away¹¹. For carrying costs, the countywide effective property-tax rate is about 0.3%, with a median annual bill of about $1,541¹¹.