March 2025: Commissioners Approve Accessory Dwelling Unit Code Amendment

March 2025: 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.

For questions about this program, contact Maria Gonzalez at Assessor’s Office: (303) 441-2335 or email Assessor’s [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Nederland office without an appointment.

Wildfire risk mapping conducted by Wildfire Partners shows that 30% of properties in the Nederland 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.

Next Steps

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

Safety data from the Nederland area shows 42 reported incidents in the past 12 months, a 24% change from the previous year. The Sheriff’s Office has increased patrols along Nelson Road and added community outreach programs in response to resident feedback.

What You Need to Know

According to Maria Gonzalez, director of Assessor’s Office, this program served 85% more residents in 2026 compared to the previous year. “We’re seeing unprecedented demand from communities across Boulder County, particularly in Nederland and the surrounding area,” Maria Gonzalez said.

The project includes improvements along Nelson Road between Nederland and the intersection with Left Hand Canyon Drive. Construction is scheduled to begin in June 2026 with completion expected within 13 months.