What building code does Denver, CO use?
Denver, CO currently enforces the 2024 International Building Code. Denver adopts its own code editions. Home-rule Denver adopted the 2025 Denver Building and Fire Code (2024 I-Code base with local amendments, retaining a 2021 IECC base alongside the Denver Green Code) on 2025-06-13, mandatory for all submittals after 2025-12-31, and enforces the 2023 NEC unamended per the Colorado State Electrical Board, which began 2026 NEC rulemaking in May 2026.
Adopted codes
| Scope | Code | Edition |
|---|---|---|
| Building | International Building Code (with local amendments) | 2024 |
| Residential | International Residential Code (with local amendments) | 2024 |
| Fire | International Fire Code (with local amendments) | 2024 |
| Mechanical | International Mechanical Code (with local amendments) | 2024 |
| Plumbing | International Plumbing Code (with local amendments) | 2024 |
| Electrical | National Electrical Code (NFPA 70) | 2023 |
| Energy | International Energy Conservation Code (with local amendments) | 2021 |
| Other | International Existing Building Code (with local amendments) | 2024 |
Current adoptions effective 2025-12-31.
Permits: Denver permitting office
Get this data as JSON
curl https://codes.submittal.app/api/v1/cities/denver.jsonConfidence: high · Verified against official sources:
- https://www.denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Community-Planning-and-Development/Building-Codes-Policies-and-Guides
- https://www.denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Community-Planning-and-Development/Building-Codes-Policies-and-Guides/Building-and-Fire-Code-Adoption-Process
- https://www.denvergov.org/My-Property/Remodeling-and-Construction/Permit-Office/Code
Part of the open building-codes dataset (CC BY 4.0). See also: Colorado statewide adoptions.