Colorado Building Permits — Complete Guide (2026)
Find, Apply & Track Permits in Cities and Counties Across Colorado
Colorado's construction boom driven by Front Range population growth has put pressure on permitting systems. Denver and Boulder are among the most ADU-friendly cities in the country. Mountain resort communities have significantly higher costs and longer timelines.
How building permits work in Colorado
Building permit requirements and processing times in Colorado vary by city and county. Use the links below to apply, check status, schedule inspections and find permit information for your location.
Learn the step-by-step permit process →Not sure where to apply?
Enter your city or address to find your permit office.
Permit costs by type — Colorado
| Permit Type | Fee Range | Processing Time | Notes |
|---|---|---|---|
| Electrical | $90–$250 | 1–5 days | EV charger permits growing rapidly |
| Plumbing | $75–$200 | 1–4 days | High altitude affects water heater sizing |
| HVAC / Mechanical | $100–$300 | 1–5 days | Heat pump adoption accelerating statewide |
| Roofing | $150–$300 | 1–5 days | Hail damage drives high volume on Front Range |
| Deck / Patio | $130–$390 | 2–5 weeks | Frost-line footings required (36 inches) |
| Room Addition | $400–$1,100 | 3–7 weeks | Energy code compliance required |
| New Construction | $800–$2,500 | 3–8 weeks | Front Range cities have streamlined review |
| ADU | $380–$950 | 2–5 weeks | Denver and Boulder — most ADU-friendly in CO |
| Solar | $90–$250 | 1–5 days | 300 days of sunshine — top solar state |
| Wildfire Mitigation | $100–$300 | 1–3 weeks | Required in designated fire hazard zones |
Major Colorado cities — apply online
Most Colorado building permits are issued by cities. Click your city to access the permit portal, apply online, or check permit status.
Permit costs by county — top Colorado counties
County building departments handle unincorporated areas. Click a county to access its permit portal directly.
How to get a building permit in Colorado
Determine your jurisdiction
Colorado has 64 counties and hundreds of municipalities. Front Range cities have robust online systems. Mountain resort communities have specialized requirements and longer timelines.
Check for wildfire zone requirements
If your property is in a State or Local Wildfire Hazard Area, additional defensible space and building material requirements apply. Check with your county assessor or local fire district.
Submit permit application
Denver's online permitting system is well-developed. Boulder has a combined review process for complex projects. Most Front Range cities offer online submission for trade permits.
Energy code compliance
Colorado adopted the 2021 IECC. At altitude, HVAC sizing calculations differ from sea-level standards — confirm your equipment is rated for your elevation.
Inspections
Colorado cities offer online inspection scheduling. Mountain communities may have fewer inspectors and longer wait times. Schedule well in advance for resort area projects.
ADU permits in Colorado — what you need to know
🏠 Colorado ADU-friendly status: Yes — strong momentum
Colorado passed HB 24-1152 in 2024 requiring most municipalities to allow ADUs in single-family zones. Denver has an active ADU program; Colorado Springs and Fort Collins both have streamlined ADU processes.
Find a licensed Colorado contractor
Colorado requires licensed professionals for most permitted work. Always verify a contractor's license before hiring — it protects you and is required for most permit types.
General Contractors
Find pre-screened general contractors for your Colorado home project. Compare quotes on permitted work.
Find a Contractor →Verify CO License
Verify your contractor holds a valid Colorado DORA – Electrical/Plumbing Board license before any permitted work begins.
Verify CO License →Electricians & Plumbers
Specialty-licensed electricians and plumbers are required for all permitted electrical and plumbing work in Colorado.
Learn More →Ready to get started? Browse verified, licensed contractors serving Colorado homeowners and get free quotes on your project.
🔍 Find a Contractor Near YouFrequently asked questions — Colorado permits
Disclaimer: HousePermits.com is an independent resource and is not affiliated with any government agency.