Building permits, zoning and land rules in Las Animas County, Colorado

Yes. Unincorporated Las Animas County requires a building permit for construction, and buildings, structures and land improvements must follow the building codes adopted by the county^1,2. The available county material does not identify the complete current code family or edition, so ask the Building Department which code applies to the proposed work. Building-permit fees vary with the project value supplied to the department¹. The county directs plumbing and electrical permits and inspections to the State of Colorado¹. For a site without sewer service, the septic permit must be completed before a building permit is issued¹. Ask the Building Department at 719-845-2577 which plans and county inspections apply to the exact project¹.

The Las Animas County Building Department is at 200 East 1st Street, Room 104, Trinidad, Colorado 81082, and its permit and inspections number is 719-845-2577¹. The county provides a building-permit form, fee information, an owner-doing-the-work form, a contractor-license application and land-use regulations¹. Provide the project value so staff can determine the variable building-permit fee before payment¹. We could not confirm the legal conditions for acting as an owner-builder or the general inspection sequence, so ask the Building Department before choosing that route. The confirmed county inspection rule applies only to completed improvements in mobile-home parks and campgrounds before a site is occupied². For land divisions, subdivisions, rezoning or other land-use cases, use the Land Use Office⁵.

Yes. Las Animas County's zoning and land-use regulations apply to public and private land and structures in unincorporated Las Animas County, but exclude land inside municipal boundaries, where the municipality's own rules govern². Septic permits for those municipal addresses still come from the district health department, not the city³. The standard districts are Agricultural, Rural Residential, Urban Residential and Ranchette, with an Airport Protection Overlay also available². Rules vary sharply by district: minimum lots range from 7,500 square feet in Urban Residential to 35 acres in Agricultural, while maximum lot coverage ranges from 15% to 50%². The listed residential districts generally require at least 600 square feet of dwelling area, except for mobile homes where permitted². Front, side and rear setbacks and maximum building heights also differ by district². Ask the Land Use Office to identify the parcel's district and overlay before designing the site⁵.

The bi-county Las Animas-Huerfano Counties District Health Department permits septic installation, repair and use in Las Animas County³. Submit the OWTS application and appropriate fee before installing any onsite wastewater treatment system, and use an installer licensed by the department³. The Las Animas County office is at 412 Benedicta Avenue in Trinidad and can be reached at 719-846-2213³. The county may not issue a building permit until it determines that adequate water, sewer and electrical supplies are available at the site; that rule establishes adequacy, not a universal requirement to connect to public utilities². Only 10% of county soils are rated without severe limits for a conventional septic drain field, so make soil and system feasibility an early purchase contingency⁶. Colorado's septic transfer-of-title requirements begin October 12, 2026 for certain property transfers involving an OWTS, so ask the health department how they affect a purchase³.

In unincorporated Las Animas County, occupying a tent, camper or RV for more than 7 days, consecutive or not, within any 30-day period is presumed to be a temporary residence and requires a temporary-use permit². The permit lasts 30 days in Agricultural and Rural Residential districts and 15 days in Urban Residential districts, subject to renewal requirements². A campground is different: it requires special-use approval in an allowable district, and a camping unit may not occupy a campground space for more than 6 months². For a tiny home, the listed residential districts set a 600-square-foot minimum dwelling size, except for mobile homes where permitted². Colorado-regulated tiny homes may qualify for long-term housing, but state plan approval does not displace county zoning^2,7.

1. Ask the Land Use Office to identify the zoning district, overlays, allowed residential use, lot minimum, setbacks, coverage and height limit².
2. If the project divides land, take it to the Land Use Office; if the parcel is in a subdivision or proposed subdivision, confirm that the final plat has been approved and recorded before seeking a building permit^2,5.
3. Verify water and establish septic feasibility; the county must find adequate water, sewer and electrical supplies before issuing the building permit².
4. Submit the OWTS application and fee to the district health department before septic installation³.
5. Prepare the building application and project value, then have the Building Department determine the variable fee before payment¹.
6. Route plumbing and electrical permits and inspections through the State of Colorado, and ask the county which general building inspections apply¹.

Start with the zoning map, legal lot status and septic feasibility. County zoning applies throughout unincorporated Las Animas County, and only 10% of county soils are rated without severe limits for a conventional drain field^2,6. A subdivision or proposed subdivision needs an approved, recorded final plat before a building permit may issue². Check flood status before siting improvements because development in a Special Flood Hazard Area requires a permit; where FEMA has not defined the hazard area, the county requires development permits so it can determine flood exposure². Verify legal water, sewage, electrical service and recorded access before closing². The county access rule found for mobile-home and campground spaces requires direct public-road access and qualifying access roads, but it does not establish a general driveway permit for every parcel².