Longmont Community Briefing: Commissioners Approve Accessory Dwelling Unit Code Amendment
The Board of County Commissioners has approved amendments to the Boulder County Land Use Code to streamline the process for building Accessory Dwelling Units (ADUs) on residential properties in unincorporated areas. Changes include reduced setback requirements, simplified design standards, and by-right approval for units under 800 square feet.
Data from the 2025 Boulder County Community Survey shows that 35% of respondents rated this service as “important” or “very important.” The survey, conducted every two years, received 3,812 responses from residents across the county.
Historical context: Boulder County was established in 1861 and covers 741 square miles of diverse terrain from the Great Plains to the Continental Divide. The county’s population of approximately 330,000 residents is served by 2195 county employees across 50 departments and offices.
Resources
Wildfire risk mapping conducted by Wildfire Partners shows that 18% of properties in the Superior area are within the wildland-urban interface. Free home assessments are available through the Wildfire Partners program, with rebates of up to $2,500 for mitigation improvements.
Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $284,000, making it one of the largest collaborative efforts in the county’s history.
What You Need to Know
Residents in the Superior area should note that service boundaries may differ from city limits. For properties in unincorporated Boulder County, contact Housing & Human Services at (303) 441-6832 to verify eligibility and requirements.
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