When will Aurora's ADU rules change?
✓ Verified against code · August 19, 2026
Unknown — council directed staff in July 2026 to draft an ordinance allowing one internal, attached, or detached ADU on most single-family lots with administrative review, but no ordinance number, hearing date, or adoption exists yet. Any guide describing 'new Aurora ADU rules' before an ordinance passes is ahead of the facts.
Citation: Council study session 7/13/2026
How current is this?
Aurora’s ADU rules run under UDO §146-3.3.6.G (2018-era rules carried into the 2019 UDO) (No HB24-1152 compliance ordinance exists). Aurora is the state's highest-profile ADU holdout: its council voted a staff-drafted compliance ordinance down in June 2025, the state formally identified Aurora as non-compliant with the ADU law in October 2025, and as of August 2026 the codified rules are still the restrictive 2018 regime. Where the code conflicts with C.R.S. 29-35-403, state law controls on paper — but the city's counter still applies its own code, and only 9 ADUs have been permitted since 2018. We verified this answer against primary sources on August 19, 2026, and every change we catch is logged in the changelog.
More Aurora ADU questions
- Can I build an ADU in Aurora?
- Is Aurora breaking Colorado's ADU law?
- Does Aurora's lawsuit against the state cover ADUs?
All Aurora ADU rules → · Compare Colorado cities →
Not legal advice — lot-specific overlays can change the answer for your parcel. The citation above points at the governing code section; check it, or ask the city to confirm.