Do You Need a Roofing Permit in Denver, CO? (2026 Guide)

You are comparing roofing quotes in Denver and one of them does not mention a permit. Before you pick the cheaper bid, it helps to know what the city itself says about when a roofing permit is required. This guide is built from Denver's published roofing guide and its Landmark Preservation roofing page, and it tells you where we could not confirm something.

When Denver Requires a Roofing Permit

Denver's Roofing Guide and Checklist (updated April 11, 2024) lists these situations for buildings under 25,000 square feet:

• Larger repairs: a repair needs a permit once it is more than 10% of the roof area or two roofing squares, whichever is smaller
• New roof penetrations: every new skylight, vent pipe, rooftop unit or solar installation needs a permit
• Reroofing: replacing the roof covering is permitted work, not a repair

How to read the repair threshold

A roofing "square" is 100 square feet of roof surface, so two squares is 200 square feet. The rule uses whichever number is smaller, and it measures your roof surface, not your home's floor area. Here is the math for two example roofs:

• A 3,000 sq ft roof: 10% is 300 sq ft, two squares is 200 sq ft, so the smaller number is 200 sq ft. A repair bigger than 200 sq ft needs a permit.
• A 1,200 sq ft roof: 10% is 120 sq ft, two squares is 200 sq ft, so the smaller number is 120 sq ft. A repair bigger than 120 sq ft needs a permit.

These two examples are our own arithmetic using the city's rule, not figures from the city. Your actual roof area is on your roofer's written estimate.

What the city says does not need a permit

According to the same guide, roof coatings do not require a permit. It also says a partial roof that ends at a natural edge can be replaced under a permit, but a partial slope cannot. That second point matters if a quote covers only half of one slope.

Special Cases: Landmark Districts, Asbestos and Large Buildings

Landmark and historic districts. Denver's Landmark Preservation roofing page says reroofing that involves a change in material, or an alternative material (including a synthetic version of the existing roofing), may need review by the Landmark Preservation Commission or the Lower Downtown Design Review Commission. The application must describe the existing roofing material and the proposed color.

Asbestos. Denver's roofing guide says asbestos work must follow the Colorado Department of Public Health and Environment requirements, and the city may ask for proof of a certified asbestos inspection.

Buildings of 25,000 square feet or more. The guide says quick roof permits are not available for these buildings, and the repair threshold is stricter (5% of the roof or two squares, whichever is smaller). This mostly affects commercial and larger multifamily properties, not a typical house.

Who Pulls the Permit and How to Apply

In Denver, roofing permits are applied for through the city's e-permits portal, where roofing is listed as a "Roofing and Siding Permit" under Quick Permits. Your contractor normally does this as part of the job. Ask for the permit number and keep it with your contract.

If you are thinking about doing the work yourself, Denver has specific rules for owner-occupants. Ask Community Planning and Development how they apply to your home before you assume you qualify.

Denver also licenses roofing contractors itself. For how that license works and how to check it, see our Denver roof replacement cost guide, which cites its sources.

Questions to Ask Your Roofer Before You Sign

• Who is pulling the permit, and can I have the permit number before work starts?
• Is the permit fee included in your quote, or added later?
• Is my home in a landmark or historic district, and does my material choice need review?
• If my roof is old, how do you handle the asbestos question?
• Who schedules the city inspection, and will I get the final sign-off in writing?

A roofer who answers these clearly and in writing is easier to trust than one who says "we don't need that." BestRoofersIn does not verify that any listed contractor pulls permits or holds a license, so ask each one and check with the city.