Patio Covers, Pergolas & Decks in Centennial, CO

Building a Patio Cover, Pergola or Deck in Centennial: What to Know

Permits in Centennial come from the City of Centennial Building Division through the Centennial Self-Service portal. The city adopted the 2021 International Residential and Building Codes in June 2023 (Ordinance 2023-O-06). Centennial's building FAQ lists a 30 psf roof snow load that can't be reduced and a 115 mph design wind speed.

When you need a permit:

• Patio covers: a building permit and zoning approval are required. Under the city's patio cover checklist, any side closer than 3 feet to the property line needs a 1-hour fire-rated wall.
• Decks: Centennial's code amendments remove one of the standard IRC permit exemptions, so plan on a permit for most decks and confirm with the city for small, low ones.
• Screen rooms and sunrooms: enclosing a patio adds living or enclosed space, so expect a building permit.

HOAs are common here. Centennial's deck guide says a city permit doesn't replace HOA review, and many neighborhoods have architectural committees. We put together drawings and material specs you can hand to your HOA along with the permit set.

Centennial requires every contractor and subcontractor to be licensed with the city. Call the Building Division at 303-754-3321 to confirm current requirements for your project.