Windows and Doors Permit Requirements in Denver, CO
Denver uses Denver Building and Fire Code (based on 2021 I-Codes with amendments). High altitude (5,280 ft) affects HVAC sizing. 30 psf ground snow load. Radon-resistant construction required. Green Building Ordinance for large buildings. ADUs allowed citywide. Email: development.services@denvergov.org
By Joey, Founder · Last verified May 15, 2026 · How we research →
When you don’t need a Window & Door permit in Denver
Same-size exterior replacements do not require a permit.
Interior door replacements do not require a permit.
When you need a Window & Door permit in Denver
Changing exterior opening sizes requires a permit.
What Makes Denver Different
Here's how Denver's windows and doors rules stack up against the standard IRC baseline that most of the country follows.
Stricter Than the IRC
Changing exterior opening sizes requires a permit in Denver, CO.
2 rules match the IRC baseline, no surprises there.
Windows and Doors Permit Costs: Denver vs. Nearby
Denver runs higher than average for Colorado. Expect $100 – $400 versus the state average of $81 – $308.
| City | Estimated Fee |
|---|---|
| Denver | $100 – $400 |
| Colorado Springs | $100 – $350 |
| Aurora | $90 – $360 |
| Fort Collins | $100 – $350 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Denver permit costs →
Who's pulled permits near you in Denver?
We track 29,365 real permit records from Denver. Check what's been filed at any address, useful for buyers vetting a listing or neighbors curious about ongoing work.
Zoning & HOA Considerations
If you live in an HOA community: hOAs in some communities regulate exterior window styles, frame colors, and door designs. Changing window types or adding new openings may require architectural review approval.
Estimated Project Timeline in Denver
Here's a typical timeline for a windows and doors project in Denver, CO:
Timeline is based on Denver's typical about 2 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Estimated permit fees for Windows and Doors projects in Denver, CO range from $100 – $400. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Windows and Doors projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Denver can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Windows and Doors permits in Denver is about 2 weeks. More complex projects may take longer if plan review is required.
If you live in an HOA community, you may need architectural review approval in addition to a building permit. HOA rules and city building codes are separate, you may need to satisfy both. Review your CC&Rs and submit to your HOA's architectural review committee before starting work.
Learn More About Windows and Doors Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Windows and Doors Guide →