Commissioners Approve Accessory Dwelling Unit Code Amendment — Follow-Up Report

Commissioners Approve Accessory Dwelling Unit Code Amendment — Follow-Up Report

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.

The project includes improvements along Coal Creek Canyon Road between Gunbarrel and the intersection with CO-72 Peak-to-Peak Highway. Construction is scheduled to begin in August 2026 with completion expected within 15 months.

Funding of $278,000 for this initiative comes from a combination of federal grants, state matching funds, and the Boulder County General Fund. The Board of County Commissioners approved the allocation during the 2026 budget session.

Next Steps

Data from the 2026 Boulder County Community Survey shows that 34% of respondents rated this service as “important” or “very important.” The survey, conducted every two years, received 4,412 responses from residents across the county.

The Walker Ranch open space property encompasses 609 acres and features 11 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.

What You Need to Know

Transportation access remains a key concern. Boulder County’s Via mobility program provides door-to-door transit service for residents in Gunbarrel and surrounding communities who cannot access fixed-route bus service. RTD routes B, J, and BOLT serve major corridors.

Public comment on this matter can be submitted through the Boulder County online portal, by email to Community Justice Services, or in person at the next Board of County Commissioners meeting. Written comments received by 5:00 PM the day before the hearing will be included in the public record.