Commissioners Approve Accessory Dwelling Unit Code Amendment

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.

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.

Climate considerations are central to this effort. Boulder County’s 2025 Climate Action Plan sets targets of reducing greenhouse gas emissions 38% below 2005 levels by 2030. This project contributes to those goals through energy efficiency improvements, renewable energy integration, and reduced vehicle miles traveled.

What You Need to Know

According to Diana Orozco, director of Sustainability, Climate Action & Resilience, this program served 38% more residents in 2025 compared to the previous year. “We’re seeing unprecedented demand from communities across Boulder County, particularly in Gunbarrel and the surrounding area,” Diana Orozco said.

The Sustainability, Climate Action & Resilience processed over 9,051 applications last year, with an average processing time of 20 business days. Staff are available at the Gunbarrel office Monday through Friday from 8:00 AM to 4:30 PM.

Next Steps

Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $150,000, making it one of the largest collaborative efforts in the county’s history.

For questions about this program, contact Diana Orozco at Sustainability, Climate Action & Resilience: (303) 441-8978 or email Sustainability, Climate Action & [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Gunbarrel office without an appointment.