Building permits, zoning and land rules in La Plata County, Colorado

Yes. Unincorporated La Plata County requires building permits for county-regulated work, with exempt work identified in Building Code Section 105.2; applications go through CityView¹. The Building Division specifically identifies new structures, additions and newly placed mobile homes on unincorporated, non-city, township or Tribal property as work requiring a building permit⁸. The county building-permit rules below apply to unincorporated land; Durango and Bayfield issue their own building permits inside city or town limits^9,10. La Plata County Public Health remains the septic-permit authority countywide³. A conditional agricultural exemption covers structures used solely to shelter agricultural implements, farm products, livestock or poultry; it requires a site plan, construction plans, an owner affidavit and a completed-use inspection¹. Ag Plus approval alone does not qualify a structure, and a later change of use requires a building permit and inspections¹. The county's 2024 building-code family took effect July 1, 2026, while the Colorado Wildfire Resiliency Code took effect June 17, 2026¹. Even work exempt from a building permit must meet applicable property-line setbacks, Animas Valley height limits and floodplain rules¹¹.

The La Plata County Building Division reviews and issues building permits and performs inspections for unincorporated properties; visit 211 Rock Point Drive in Durango, call 970-382-6263 or use CityView⁸. Building-permit charges follow the county code's fee schedule, while road-impact and fire-impact fees may also apply by location; ask the local fire district about its charge¹. Schedule county building inspections at least one business day ahead because same-day inspections are unavailable¹. The county Engineering Department at 1365 Camino Del Rio, 970-382-6363, handles driveway access and work within county rights-of-way¹². A new single-family home needs a county driveway permit, while direct state-highway access requires a Colorado Department of Transportation access permit^1,6.

La Plata County land-use rules vary by planning district and jurisdiction, so a county address alone does not establish the parcel’s zoning⁴. The county rules below apply to unincorporated land; Durango sets its own zoning inside city limits^2,13. La Plata County Public Health still issues septic permits countywide³. Animas Valley parcels can have additional zoning rules, so confirm the parcel's classification with Planning before designing a project⁴. Additional dwellings may need a land-use permit based on parcel size, and a second dwelling on a parcel under 6 acres generally must share the primary home's electrical meter, water source, OWTS and access unless the parcel is tax-assessed agricultural⁴. Its livable floor area cannot exceed the primary dwelling or 2,000 square feet, whichever is less⁴. These acreage bands govern additional dwellings rather than setting a universal minimum lot size, and the table does not apply in Animas Valley⁴. Minor subdivisions, including agricultural-exemption subdivisions, require a minor land-use permit; major subdivisions require a major land-use permit⁴.

La Plata County Public Health regulates and issues septic permits countywide under local OWTS rules, so that authority does not shift to a municipality when municipal building or zoning rules apply³. Reach the Environmental Health OWTS team at 185 Suttle Street in Durango or 970-828-8842³. Obtain a septic permit before constructing, altering or repairing an OWTS; applications may be emailed or delivered to Public Health, and marginal lots may fail because of acreage, steep slopes, shallow bedrock, shallow groundwater or setback deficiencies³. Only about 5.1% of county soils are rated free of severe limits for a conventional drain field, so make the site evaluation an early purchase contingency¹⁴. Most septic-served properties require an inspection before sale; exemptions include specified recent final approvals and certain non-arm’s-length, trust or LLC transfers³. A continued-use permit carries a $120 nonrefundable administrative fee³. A new-home application must show either a septic permit or the applicable sewer-district tap¹.

We could not confirm a county rule allowing or barring long-term RV occupancy or private-land camping in unincorporated La Plata County; ask Planning for a parcel-specific answer⁴. A tiny-home community or manufactured-home subdivision in unincorporated La Plata County requires a major land-use permit, but that rule does not answer whether a single tiny home or a dwelling on wheels is allowed on a particular parcel⁴. A tiny home regulated by the Colorado Division of Housing needs plan approval before construction, must meet state-adopted standards and local zoning, and is certified for its installation site¹⁵. A structure used as a long- or short-term rental, or occupied independently from the primary dwelling, requires an ADU or land-use permit in unincorporated La Plata County⁴. Ask Planning to confirm zoning approval for the proposed structure and occupancy, and remember that any OWTS construction, alteration or repair still needs a county septic permit^3,4.

1. Confirm whether the parcel is unincorporated, then verify its zoning classification, district layers, setbacks and any Animas Valley rules with Planning^4,11.
2. For most unincorporated proposals, submit a feasibility evaluation with the parcel number, project description, access, water, OWTS and irrigation information, plus a site plan; Planning feasibility review generally takes about 2 weeks⁴.
3. Secure proof of water supply and sewage disposal, using a Division of Water Resources well permit or district water tap and a county septic permit or sewer tap as applicable¹.
4. Obtain the county Engineering driveway permit, or a CDOT access permit for direct state-highway access^1,6.
5. For a new home in a floodplain hazard area, arrange pre- and post-construction elevation certificates; apply through CityView for the building permit and budget for building and applicable impact fees¹.
6. Build to the approved plans and request each Building Division inspection at least one business day ahead¹.

A new home supplied by a domestic well needs proof of a Colorado Division of Water Resources well permit; a district water tap can serve instead¹. For a new single-family home, confirm that the parcel can support proof of water supply and sewage disposal through permits or district taps¹. Ask for the septic inspection and continued-use paperwork because most septic-served properties require inspection before sale³. New-home applications for floodplain-hazard properties require pre- and post-construction elevation certificates¹. Confirm zoning, numeric setbacks and district overlays with Planning, because permit-exempt buildings still must meet applicable land-use and floodplain rules^11,16. Confirm whether Engineering or CDOT controls the driveway permit^1,6.