La Plata County, Colorado requires a building permit for new structures, additions, remodels and newly placed manufactured or modular homes anywhere in the unincorporated county1. The county also zones unincorporated land under its own Land Use Code2. Septic goes through La Plata County Public Health's Environmental Health Division, not a separate district or the state3. A direct driveway connection to a state highway needs its own Colorado Department of Transportation permit, separate from anything the county issues4.
At a glance
- Building permit
- Required for new structures, additions, remodels and manufactured/modular home placement in unincorporated La Plata County1
- Zoning
- Yes, countywide under the La Plata County Land Use Code, with added rules in the Animas Valley25
- Septic
- County-issued OWTS permit through La Plata County Public Health3
- Owner-builder exemption
- Not stated on the county's building pages; ask the Building Division6
- County road driveway permit
- Issued by the county Engineering Department7
- State highway access permit
- CDOT permit required for direct access to a state highway; Level 1 residential/ag fee is $504
- Well permit
- Required statewide from the Colorado Division of Water Resources for a new groundwater well8
- Property tax
- Effective rate about 0.3%, with a typical annual bill near $1,452910
Who to call
Building permits
La Plata County Building Division
Building permit review, issuance and inspections for new construction, additions, remodels and manufactured/modular home placement in unincorporated La Plata County
211 Rock Point Drive, Durango, CO
Zoning
La Plata County Planning Division
Zoning, the Land Use Code, feasibility evaluations and land-use permit applications for unincorporated La Plata County
Septic permits
La Plata County Public Health, Environmental Health Division (OWTS Team)
OWTS (septic) system permits, inspections and continued-use permits for La Plata County
185 Suttle Street, Durango, CO 81303
Roads & driveways
La Plata County Engineering Department (Public Works)
Driveway access permits, work within county road rights-of-way, and transportation/oversize permits for unincorporated La Plata County
1365 Camino Del Rio, Durango, CO 81303
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in La Plata County, Colorado?
Yes. La Plata County requires a building permit for new structures, additions, remodels and newly placed manufactured or modular homes anywhere in the unincorporated county1. The county's own Building Division states that building permits are required by La Plata County for all new structures, additions and newly-placed mobile homes on unincorporated, non-city, township or Tribal properties11. This isn't a new program: La Plata County has enforced its own building code since 197311. Colorado law is what makes that possible: a board of county commissioners may adopt a building code and require permits in unincorporated parts of the county, outside any city or town12.
Who is the La Plata County building department, and how do you reach them?
The La Plata County Building Division, part of the Community Development Department, handles permit review, issuance and inspections at 211 Rock Point Drive in Durango11. Call 970-382-6263, or apply for and track a permit online through the county's CityView permit portal11. A separate office handles road access: the county's Engineering Department, also called Public Works, sits at 1365 Camino Del Rio in Durango and can be reached at 970-382-63637. The Engineering Department states it permits all driveway accesses, any type of work within county rights-of-way, and also transportation permits7. If your access instead connects directly to a state highway, that permit comes from the Colorado Department of Transportation rather than the county, and a Level 1 single-family residential or agricultural permit costs $504.
Does La Plata County have zoning?
Yes. La Plata County administers its own Land Use Code with zoning classifications across the unincorporated county2. The Planning Division confirms that before applying for a land use permit in unincorporated La Plata County, most project proposals begin with a feasibility evaluation5. Parcels in the Animas Valley carry additional zoning rules on top of the countywide code, so confirm your zoning classification with the county's mapping tool or the Planning office before you plan a build there5. Colorado law backs this local authority: county zoning can regulate building location, height, lot size, lot coverage and density in unincorporated territory13. Separately, Colorado's 2024 accessory dwelling unit law requires certain jurisdictions to allow one ADU by administrative approval starting June 30, 2025, but the law does not make every Colorado county area a covered jurisdiction, so ask Planning whether your parcel qualifies before you count on it14.
How do septic permits work in La Plata County?
Septic runs through the county, not a separate health district or the state: La Plata County Public Health's Environmental Health Division is the regulatory authority for on-site wastewater treatment system (OWTS) permitting in La Plata County315. Reach the OWTS team at 185 Suttle Street in Durango, 970-828-884215. A permit is required to construct, alter or repair any OWTS in the county15. Watch the timing here: the county's Board of Health adopted new on-site wastewater treatment regulations in January 2026 and ratified them in March 2026, so an older ordinance summary may already be out of date15. Colorado law backs this up statewide: a person may not construct, alter, install or use an OWTS without first getting the required permit, and local boards of health, not a state agency, write and enforce the detailed rules1617. Soils are a real constraint countywide: only about 5.1% of La Plata County's soils are rated free of severe limits for a conventional septic drain field, so budget for a site evaluation and plan on an engineered or alternative system across much of the county18. Colorado also bars new cesspools outright and requires a final OWTS inspection and approval before occupancy on any home not served by a sewage treatment works1920.
Can you live in an RV or tiny home on your land in La Plata County?
This guide could not confirm a county-specific rule allowing or barring RV living on a private rural parcel; that answer depends on your zoning classification, which the Planning Division can confirm by parcel5. Don't lean on Colorado's state-park camping rules to answer this: those cover land under Colorado Parks and Wildlife's control, not private land, and say nothing about long-term RV occupancy on a homestead21. A tiny home has a clearer statewide path if it's built to Colorado Division of Housing standards: plans must be submitted to and approved by the Division before construction, the finished unit must meet Colorado-adopted codes, and it's certified for the specific site where it's installed, so moving it later can require new design review22. The same local-zoning gate applies to a certified, HUD-code manufactured or modular home: it can be installed anywhere in Colorado only where local zoning allows it, which is why La Plata County's own building permit already covers newly placed manufactured and modular homes231. Call the Planning Division before you buy if RV or tiny-home living is the plan5.
Building a home in La Plata County: the steps, in order
- Confirm your parcel's zoning classification, and any Animas Valley or district-specific overlay, with the Planning Division before you buy or design5.
- Submit a feasibility evaluation to Planning first; La Plata County treats this as the first step for most development proposals before a land use permit5.
- Line up your septic path: apply for an OWTS permit with La Plata County Public Health, and plan on a site evaluation given the county's mostly limited soils for conventional drain fields1518.
- Apply for a well permit through the Colorado Division of Water Resources before you drill; nearly every new groundwater well in the state needs one, and a complete application can take up to 49 days to review8.
- Apply for a building permit through the county's Building Division, in person at 211 Rock Point Drive or online through the CityView portal11.
- Get your access permit: a driveway onto a county road needs a permit from the Engineering Department, while a direct connection to a state highway needs a separate CDOT access permit74.
- Build to your issued permit, and schedule your required inspections with the Building Division, whose review covers plan review, building inspections and code enforcement11.
What to check before you buy land in La Plata County
Water rights matter as much as water access: any new well that diverts groundwater needs a permit from the Colorado Division of Water Resources, and review of a complete application can take up to 49 days, so don't assume a well can be drilled the week you close8. Septic soils lean unfavorable countywide, with only about 5.1% of La Plata County's soils rated free of severe limits for a conventional drain field, so get a site evaluation from Environmental Health before you count on a standard system1815. For a property in a floodplain hazard area, La Plata County requires pre- and post-construction elevation certificates when applicable as part of the building-permit process24. Road access has two different permit paths depending on what you're connecting to: a county road driveway needs a permit from the Engineering Department, while a direct connection to a state highway needs a CDOT access permit starting at $5074. La Plata County's effective property tax rate runs about 0.3%, with a typical annual bill near $1,452910. The county sits roughly 154 miles from the nearest city of 100,000 or more people, but Durango is the county seat and largest town, with its own airport, hospital and services25.
Watch-outs
- La Plata County's Board of Health adopted new on-site wastewater (septic) treatment regulations in January 2026 and ratified them in March 2026; confirm current OWTS requirements with the county's Environmental Health Division rather than an older summary15.
- This guide could not confirm an owner-builder exemption or an RV/tiny-home occupancy rule on the county's building or planning pages; call the Building Division or Planning Division before you plan around either one65.
Sources
- La Plata County Building Division FAQ (2026 county census)
- La Plata County Land Use Feasibility and Permitting (2026 county census)
- La Plata County Public Health - Septic Systems (2026 county census)
- Access Permits | Frequently Asked Questions (Colorado statewide rule), quoted and re-checked
- La Plata County Planning Division (lpcgov.org)
- (2026 county census)
- La Plata County Engineering Department (Public Works) (lpcgov.org)
- Water Administration (Colorado statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- La Plata County Building Division (lpcgov.org)
- Colorado Revised Statutes 2025 Title 30 Government - County (Colorado statewide rule), quoted and re-checked
- Colorado Revised Statutes 2025 Title 30 Government - County (Colorado statewide rule), quoted and re-checked
- HB24-1152 Accessory Dwelling Units (Colorado statewide rule), quoted and re-checked
- La Plata County Public Health, Environmental Health Division (OWTS Team) (lpcgov.org)
- Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
- Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
- Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
- Title 33 - Parks and Wildlife - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
- Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
- Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
- La Plata County Building Frequently Asked Questions, quoted and re-checked
- Distance to the nearest metro area: Bolthole Index county data
Written September 29, 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.