Adu services — Boulder, CO
Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
ADU services simplify the process of adding extra living space to your lot. Whether you are looking to create a rental unit for extra income or a private space for family members, these services handle the architectural drawings, engineering, and city approvals required by your local jurisdiction. You should reach out for these services when you have a clear goal for your backyard space but need expert help turning that vision into a permitted, livable structure.
Frequently asked in Boulder
What's involved in ADU building?
What is the accessory dwelling unit construction cost?
Can I get an affordable accessory dwelling unit?
What is an emergency ADU service?
While ADU construction is a planned process, we offer prompt service. If you have urgent questions or want to start your project quickly, call us. We aim to schedule estimates and consultations rapidly. The actual construction requires planning and time. The pros work efficiently to complete your ADU. Get in touch to discuss your needs.
What are accessory dwelling unit homes?
Accessory dwelling unit homes are secondary, independent living spaces on a residential property. They are typically smaller than the main house and include their own kitchen, bathroom, and sleeping area. ADU homes offer flexible living solutions for families, guests, or as rental units.
What is a detached accessory dwelling unit?
A detached accessory dwelling unit (DADU) is a standalone living space on your property. It's separate from your main house. Examples include backyard cottages or garage apartments. DADUs offer privacy and can be ideal for rental income or extended family. They are a versatile addition to any home.
What is an accessory dwelling unit?
An accessory dwelling unit (ADU) is a secondary, independent living space on a residential property. It includes its own kitchen, bathroom, and sleeping area. ADUs can be attached to the main home or be a separate structure. They offer flexible housing solutions for various needs.
Also serving nearby: Longmont · Westminster · Arvada · Thornton · Lakewood
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Boulder — population 105,898; about 3,937 residents per square mile across 26.9 sq mi. ZIP codes covered include 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308.
Neighborhoods served in Boulder: Mapleton Hill, Whittier, Downtown Boulder, Newlands, Chautauqua — and every surrounding area.
Areas we serve
Browse by state, then city.