Denver, CO Permit Requirements: Shed & Outbuilding Permits (2026)

Denver's Community Planning and Development (CPD) department requires building permits for most accessory structures, with exemptions for small buildings. Detached accessory structures that do not exceed 200 square feet in area and do not require a concrete foundation are exempt from building permits. However, even exempt structures must comply with zoning setback requirements and lot coverage limits. Sheds with electrical, plumbing, or mechanical systems require appropriate trade permits regardless of size. In residential zones, accessory structures must be set back from property lines according to the Denver Zoning Code. Sheds cannot be placed in required front setbacks. The combined coverage of all structures on a lot cannot exceed the maximum lot coverage allowed by the zone district. Pre-fabricated and kit sheds still must meet all zoning requirements. Sheds in historic districts may require Landmark Preservation Commission review. Denver offers online permit applications through its e-permits system for projects that do require permits.