Prefab adu — 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
A prefab ADU is built in a factory environment and then transported to your property. This method is often faster than traditional site-built homes because the construction happens off-site while your foundation is being prepared. It is a great choice if you want to minimize construction noise and mess in your backyard. Prices typically vary based on transportation distances and crane requirements. Exact pricing confirmed free on the call.
Frequently asked in Boulder
What does an ADU contractor do in Boulder?
What is the cost to build an ADU in Boulder?
What is the cost of an accessory dwelling unit in Boulder?
What is the best accessory dwelling unit for my Boulder home?
Where can I find ADU near me in Boulder?
You can connect with licensed, insured ADU pros serving Boulder. They work across all neighborhoods. They have the experience to build your ADU efficiently. They handle the entire project for you.
Are there affordable ADU options in Boulder?
What is an ADU quote like in Boulder?
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: Whittier, Mapleton Hill, Downtown Boulder, Newlands, Chautauqua — and every surrounding area.
Areas we serve
Browse by state, then city.