Deck / Patio 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
When you DON'T need a permit
Freestanding decks not exceeding 30 inches above grade are exempt in Denver, CO.
Source: Denver Building and Fire Code (2021 I-Codes with amendments)
When you DO need a permit
Attached decks require a building permit in Denver, CO.
Estimated fee: $100 – $400
Typical timeline: About 2 weeks
Source: Denver Building and Fire Code (2021 I-Codes with amendments)
Decks over 30 inches require a permit in Denver, CO. Snow load design required.
Estimated fee: $150 – $600
Typical timeline: About 3 weeks
Source: Denver Building and Fire Code (2021 I-Codes with amendments)
Covered decks require permits in Denver, CO. Snow load engineering required.
Estimated fee: $250 – $800
Typical timeline: About 4 weeks
Source: Denver Building and Fire Code (2021 I-Codes with amendments)
Decks may be subject to zoning setback and lot coverage requirements. Check with your local planning department before building near property lines.
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Frequently Asked Questions
Estimated permit fees for Deck / Patio 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 Deck / Patio 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 Deck / Patio permits in Denver is About 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Deck / Patio Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Deck / Patio Guide →