Unincorporated Delta County, Colorado generally does not require a county building permit, but a permit is required in the Highway 92 and Highway 50 Overlay Districts1. Delta County has land-use zoning, and state electrical and plumbing permits still apply23. Any structure with a restroom or sewer drain also needs an onsite wastewater system processed through Delta County Environmental Health45.
At a glance
- Building permit
- Generally not required; required in the Highway 92 and Highway 50 Overlay Districts1
- Zoning
- Yes; the county Land Use Code governs unincorporated land6
- Septic permit
- Required for every structure with a restroom or sewer drain4
- RV living
- Conditional; long-term occupancy requires permanent permitted utilities78
- Tiny home
- State-approved tiny homes may be used for long-term living, subject to county zoning and site requirements96
- Owner-builder exemption
- No distinct county exemption confirmed; ask Planning what permits apply to the parcel10
- Well
- A domestic well or spring requires a state Division of Water Resources permit11
- County-road access
- A county access permit is required12
Who to call
Building permits
Delta County Planning and Community Development
Land use, zoning, development applications, subdivisions, access, addressing and floodplain questions for unincorporated Delta County
295 W. 6th Street, Delta, CO 81416
Septic permits
Delta County Environmental Health Services
Septic systems, drinking water, water quality and other environmental health services in Delta County
255 West 6th Street, Delta, CO 81416
Contact details are copied from each office’s official page and were checked against it on September 27, 2026.
Do you need a building permit in Delta County, Colorado?
Most construction in unincorporated Delta County does not require a county building permit, and the county generally does not issue certificates of occupancy3. The important exceptions are the Highway 92 Overlay District and Highway 50 Overlay District, where development requires a building permit1. Buildings in those districts must be inspected by an ICC-certified building inspector registered with a Colorado municipality or county, and the signed Certificate of Inspection Completion goes to the Delta County Planning Department13. Outside those districts, the lack of a general county building permit does not erase other approvals: state electrical and plumbing permits remain required, while land-use standards such as setbacks still govern the site314. Delta County has not adopted building codes throughout its unincorporated territory15.
Who handles Delta County building and land-use permits?
Delta County Planning and Community Development is the first stop for a rural project, including questions about zoning, property development, subdivisions, access and required applications16. Reach the office at 970-874-2110 or [email protected], or visit 295 W. 6th Street, Delta, CO 8141616. Delta County does not operate a general building department for most unincorporated construction; Planning administers the land-use framework and receives inspection completion documents for buildings in the highway overlay districts1513. Incorporated municipalities may administer their own land-use rules, so first confirm whether the parcel is inside a city or town6. For an unincorporated parcel, give Planning the address or parcel number and a clear project description so staff can identify the zoning, overlay status and applications that apply16.
Does Delta County have zoning?
Yes. Delta County's Land Use Code is the zoning framework for property use and development in unincorporated Delta County, while incorporated municipalities may administer their own regulations2. County standards include setbacks of 25 feet from a ditch edge, 25 feet from a public or private road right-of-way, 15 feet from an interior property line and 50 feet from the top of a river, stream or creek bank14. A non-habitable accessory structure may sit 5 feet from an interior property line, subject to the stated exception14. Agricultural uses are allowed without Planning review, but development must still meet applicable Land Use Code standards17. Delta County generally allows one dwelling plus one accessory dwelling unit when water, wastewater, power and the other code standards are satisfied18. No numeric minimum dwelling size, lot-coverage cap or county building-height limit was confirmed; ask Planning about the parcel and proposed structure16.
How do septic permits work in Delta County?
Delta County Environmental Health processes septic permits, and every structure with a restroom or sewer drain needs a septic system or other onsite wastewater treatment system54. An address must be assigned before the application, and the county issues a conditional permit before construction4. At least two inspections are required: a site inspection for suitability and a final inspection; final approval is required before occupancy19. Reach Environmental Health at 970-874-2165 or visit 255 West 6th Street, Delta, CO 8141620. Only about 4.3% of Delta County soils are rated without severe limitations for a conventional septic drain field, so make the site evaluation an early purchase contingency and budget for a nonstandard design if the lot performs poorly21. Colorado also requires adequate sanitary sewage disposal for occupied structures, so an off-grid plan still needs an approved sanitation path22.
Can you live in an RV or tiny home in Delta County?
An RV may serve as a dwelling in unincorporated Delta County when it connects to permitted, permanent and reliable power, water, and sewer or a permitted onsite wastewater system8. During construction, the property owner or constructing contractor may occupy an RV for up to 24 months while an active plumbing or electrical permit remains in place; there is no time limit when the RV has permanent infrastructure7. A separate general rule for temporary camping on private land was not confirmed, so ask Planning before treating recreational camping as residential occupancy16. Colorado-approved tiny homes are approved for long-term living on permanent or temporary foundations, but plans require state approval before construction and county zoning still applies at the installation site9. Delta County's sources do not establish a distinct local tiny-home rule or numeric minimum home size, so confirm the proposed unit, parcel zoning, utilities and setbacks with Planning16.
Building a home in Delta County: the steps, in order
- Confirm that the parcel is unincorporated, then ask Delta County Planning to identify its zoning, plat notes and highway-overlay status161.
- Confirm the site plan meets county setbacks and determine which land-use application, if any, the proposed use requires142.
- Secure legal access; Delta County requires an access permit, while direct access to a state highway requires a Colorado Department of Transportation permit1223.
- Get an address, then apply through Delta County Environmental Health for the septic permit and site inspection before construction419.
- Obtain state electrical and plumbing permits, even where no general county building permit applies3.
- If the property lies in either highway overlay district, get the county building permit and arrange the required certified inspection113.
- Complete the final septic inspection and approval before occupancy19.
What should you check before buying land in Delta County?
Start with wastewater: only about 4.3% of Delta County soils are rated without severe limits for a conventional drain field, making a septic site evaluation central to due diligence21. Water also needs proof; a domestic well or spring requires a permit from the Colorado Division of Water Resources, and a well cannot serve across property lines without a state-approved augmentation plan11. Check mapped flood hazards because development, including building and septic work, in a floodway or floodplain may require a county permit24. Verify driveway approval because county access permits are required in all cases, and residential lots are generally limited to one access12. Delta County averages about 17.5 inches of precipitation annually and has experienced severe drought in about 32.1% of years, so confirm the legal and practical reliability of the water source2526. The effective property-tax rate is about 0.3%, with a median annual bill near $9862728.
Watch-outs
- A parcel in the Highway 92 or Highway 50 Overlay District needs a building permit and certified inspections even though most unincorporated Delta County construction does not113.
- A county-road access permit is required, and direct access onto a Colorado state highway needs a separate state access permit1223.
- Delta County's rules do not confirm a distinct owner-builder exemption, so ask Planning which county and state permits apply before starting work yourself1016.
Sources
- Building/Land Use/Subdivision (2026 county census)
- Land Use Regulations, quoted and re-checked
- Building/Land Use/Subdivision, quoted and re-checked
- Water/Wastewater, quoted and re-checked
- Water/Wastewater, quoted and re-checked
- Land Use Regulations (2026 county census)
- 2024 Delta County Land Use Code, quoted and re-checked
- 2024 Delta County Land Use Code, quoted and re-checked
- Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
- (2026 county census)
- Frequently Asked Questions (FAQs), quoted and re-checked
- Frequently Asked Questions (FAQs), quoted and re-checked
- Building/Land Use/Subdivision, quoted and re-checked
- Building/Land Use/Subdivision, quoted and re-checked
- Frequently Asked Questions (FAQs), quoted and re-checked
- Delta County Planning and Community Development (deltacountyco.gov)
- Frequently Asked Questions (FAQs), quoted and re-checked
- Frequently Asked Questions (FAQs), quoted and re-checked
- Water/Wastewater, quoted and re-checked
- Delta County Environmental Health Services (deltacountyco.gov)
- 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
- Access Permits | Frequently Asked Questions (Colorado statewide rule), quoted and re-checked
- Building/Land Use/Subdivision, quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 27, 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.