Denver
Denver ADU eligibility starts with whether the zone district allows ADUs, then design and permit review.
HighOfficial source path
Colorado
Colorado ADUAllowed checks.
Use a connected city page or enter an address. Official local sources remain final.
Quick answer
Colorado ADUAllowed coverage starts with local official sources and connected city pages.
State source posture
Local official sources
A useful ADU answer needs parcel facts: zoning, building type, unit count, lot constraints, utilities, and local ADU rules.
Colorado Springs
Colorado Springs accessory-unit screening starts with the official accessory-structures and residential-accessory-use sources, plus zoning and building-permit review.
HighOfficial source path
Aurora
Aurora accessory-unit screening starts with the Unified Development Ordinance, zoning navigator/property information, and building-permit review.
HighOfficial source path
Fort Collins
Fort Collins, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Lakewood
Lakewood, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Thornton
Thornton, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Arvada
Arvada, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Westminster
Westminster, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Greeley
Greeley, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Pueblo
Pueblo, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Centennial
Centennial, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Boulder
Boulder, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Longmont
Longmont, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Castle Rock
Castle Rock, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Loveland
Loveland, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Broomfield
Broomfield, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Commerce City
Commerce City, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Grand Junction
Grand Junction, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Parker
Parker, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Littleton
Littleton, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Brighton
Brighton, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Windsor
Windsor, CO ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Cite this page
Use this page as a public web reference, not an official agency record. The linked official source remains the final authority.
ADUAllowed. "Colorado ADUAllowed | Official Source Routes". https://www.aduallowed.com/states/co/. Reviewed Jul 2026.
Source and citation notes