What is HB24-1152?
✓ Verified against code · August 19, 2026
HB24-1152 is the 2024 Colorado law, codified at C.R.S. 29-35-401 through 405, requiring every Colorado city or town with 1,000+ residents inside a metropolitan planning organization to allow one ADU wherever a single-family home is allowed, through administrative approval, by June 30, 2025. It bans ongoing owner-occupancy mandates (though an at-application residency check is allowed), most new-parking requirements, and design standards that would block an ADU between 500 and 750 sq ft. Adoption across Front Range cities has varied widely, with several cities' codes still in apparent conflict with the statute.
Citation: HB24-1152
How current is this?
Colorado’s ADU rules run under HB24-1152 (2024). HB24-1152 (codified at C.R.S. 29-35-401 through 29-35-405) required every Colorado city or town of 1,000+ residents inside a metropolitan planning organization to allow one ADU wherever a single-family home is allowed, through administrative approval, by June 30, 2025 — banning ongoing owner-occupancy mandates (an at-application residency check is allowed), most new-parking requirements, and design standards that would block an ADU in the 500–750 sq ft range. Note the contrast with Washington: one ADU per lot, not two. We verified this answer against primary sources on August 19, 2026, and every change we catch is logged in the changelog.
More Colorado ADU questions
- Which Colorado cities are not complying with the ADU law?
- Does Colorado allow two ADUs per lot?
- What happened to Lakewood's zoning code?
- How big can an ADU be in Colorado?
- What is the 500 to 750 square foot size protection in Colorado's ADU law?
- Do Colorado cities require ADU owners to live on the property?
- Can Colorado cities require parking for an ADU?
- What does home rule mean for Colorado's ADU law?
- What do Colorado ADU permits cost?
- How long does it take to get an ADU permit approved in Colorado?
- Can I rent out my Colorado ADU short-term on Airbnb?
Not legal advice — local ordinances can go further than the state floor. The citation above points at the governing statute; check your city’s code for the specifics.