Do I need a permit for accessory dwelling unit (adu) in Unincorporated Montezuma County?
Unincorporated Montezuma County does not issue residential building permits. Montezuma County has no building department and does not enforce residential building codes or issue certificates of occupancy; Planning & Zoning handles address, septic and driveway permits. State electrical and plumbing permits still apply.
The requirements below come from Colorado rules and describe the standard the work must still meet. They are not a statement that Unincorporated Montezuma County will issue you a permit.
Yes. In Colorado, accessory dwelling unit (adu) generally requires a permit, and Unincorporated Montezuma County is no exception.
Colorado's 2024 ADU law (HB24-1152, C.R.S. 29-35-401 to 405) required Subject Jurisdictions to allow one ADU wherever a single-unit detached home is allowed by June 30, 2025, through administrative approval with no public hearing, even where HOA rules would prevent it. Subject Jurisdictions are cities and towns of 1,000 or more people within a Metropolitan Planning Organization, plus county areas within an MPO and a Census Designated Place of 40,000 or more. The law changes zoning, not construction rules. Subject Jurisdictions may still require compliance with adopted fire, building, utility, and stormwater codes and proof of water and wastewater capacity. Outside those jurisdictions, local zoning decides whether an ADU is allowed. An ADU always has electrical and plumbing work, which needs state or local trade permits and inspections even where no local building code applies.
Get your exact answer
Answer a few questions to see the specific permits, documents, and next steps for your accessory dwelling unit (adu) in Unincorporated Montezuma County.
Check my projectDocuments you may need
- Local building permit applicationLikely required
- Site plan showing the ADU, the primary home, setbacks, and utilitiesRequired
- Construction drawings, including floor plan, framing, and energy detailsLikely required
- Electrical and plumbing permits (state DORA or local program)Required
- Proof of water supply and wastewater capacitySometimes required
Possible inspections
- Footing and foundation inspection
- Framing plus electrical, plumbing, and mechanical rough-in inspections
- Insulation inspection
- Final inspection
Frequently asked questions
- Do I need a permit for accessory dwelling unit (adu) in Unincorporated Montezuma County?
- Yes. In Colorado, accessory dwelling unit (adu) generally requires a permit, and Unincorporated Montezuma County is no exception. The documents and inspections sections on this page list what the building department typically asks for.
- Who issues the permit in Unincorporated Montezuma County?
- The local building department for Unincorporated Montezuma County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.