Deck Permit Requirements in Westminster, CO
2021 I-Codes in effect since June 1, 2024.
By Joey, Founder · Last verified March 29, 2026 · How we research →
When you don’t need a Deck permit in Westminster
Freestanding decks not more than 30 inches above grade are exempt from a building permit per IRC R105.2.
When you need a Deck permit in Westminster
Attached decks require a building permit even if under 30 inches.
Decks more than 30 inches above grade require a building permit.
Covered decks or those over 300 sq ft require a building permit.
What Makes Westminster Different
Here's how Westminster's deck rules stack up against the standard IRC baseline that most of the country follows.
Stricter Than the IRC
Attached decks require a building permit even if under 30 inches.
Decks more than 30 inches above grade require a building permit.
1 rule match the IRC baseline, no surprises there.
Deck Permit Costs: Westminster vs. Nearby
Westminster comes in on the low side for Colorado. You're looking at $90 – $540 here, compared to the state average of $133 – $443.
| City | Estimated Fee |
|---|---|
| Westminster | $90 – $540 |
| Denver | $100 – $800 |
| Colorado Springs | $100 – $600 |
| Aurora | $90 – $720 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Westminster permit costs →
Zoning & HOA Considerations
Decks may be subject to zoning setback and lot coverage requirements. Check with your local planning department before building near property lines.
If you live in an HOA community: many HOAs restrict deck materials, colors, size, and placement. Review your CC&Rs and submit an architectural review request before applying for a building permit. HOA approval can take 1–6 weeks.
Estimated Project Timeline in Westminster
Here's a typical timeline for a deck project in Westminster, CO:
Timeline is based on Westminster's typical about 2 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
Need a Deck permit in Westminster, CO?
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Frequently Asked Questions
Estimated permit fees for Deck projects in Westminster, CO range from $90 – $540. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Deck 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 Westminster 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 permits in Westminster 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 Deck Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Deck Guide →