Boise's Premier DADU contractor
BOISE DADU
Custom DADU design, permits, and construction across Ada and Canyon County
Bringing 40+ years of Pacific Northwest construction expertise and 80+ completed DADUs to the Treasure Valley. We build permitted, purpose-built detached accessory dwelling units in Boise, Meridian, Eagle, Nampa, and the surrounding Ada and Canyon County areas.

Licensed & Bonded




WHY BUILD A DADU IN BOISE?
A DADU adds a fully independent living space to your existing lot — and with it, a range of options most Boise homeowners don't realize they have. Rental income. Multi-generational living. A private guest space. A long-term equity play. Whatever your goal, a well-built DADU is one of the most versatile investments you can make in Boise. Whether you're in the established neighborhoods of the North End and Bench, out near the Boise Foothills, or anywhere across the metro, the demand for quality housing on residential lots has never been stronger. Boise's continued growth makes this an especially strong moment to build — and with 80+ completed projects, our DADU team brings the experience to do it right.
Our services in Boise
Whether you're building a brand new DADU, adding an attached ADU, or converting an existing garage into livable space, the Boise DADU team handles every step under one roof. Design, permitting, utility coordination, construction, inspections, and certificate of occupancy — we manage the entire process so you're never left coordinating between contractors or chasing down a permit on your own.
Accessory Dwelling Units (ADU)
Attached or interior accessory units built within or alongside your existing home. We handle design, permitting, and full construction — one contract, one team, start to finish.
Detached Accessory Dwelling Units (DADU)
Fully independent structures built on your existing lot. Our most popular service in Boise — choose from our standard model lineup or work with us on a custom design-build.
Fully Converted Living Space
Convert an existing attached or detached garage into a permitted, livable space. A cost-effective path to adding square footage without new ground-up construction.
Four decades of construction experience, built on a foundation of family and craftsmanship.

Matt grew up in Tacoma learning the construction trade alongside his father, and that family foundation is still at the heart of how Tacoma DADU operates today. With over 40 years of experience and 80+ DADUs built across the Pacific Northwest, he's brought that same hands-on, honest approach to every project — and now he's bringing it to Boise and the Treasure Valley.
When you work with Boise DADU, you're working with a team that genuinely loves what they do and takes real pride in getting it right for every homeowner.
We build DADUs and ADUs throughout the Boise metro — from established North End and Bench neighborhoods to newer developments in Meridian and Eagle. Wherever your lot is in the Treasure Valley, our Boise DADU builders can assess it, permit it, and build it.
Boise
Nampa
Meridian
Eagle
North End
Bench
Harris Ranch
Ada County
Canyon County
Answers to the most common questions Boise homeowners ask about the process of adding a DADU unit to their property.
Most single-family lots in Boise zoned R-1B, R-1C, or R-2 allow DADUs. The minimum lot size, setback requirements, and allowable square footage vary by zone. We do a free lot assessment to give you a definitive answer before any money changes hands.
Boise construction costs are broadly comparable to the Tacoma market — our completed projects range from the low $200s for a 448 sq ft McKinley model to $350,000+ for a fully finished 1,000 sq ft build. Ada County permit fees and Idaho Power utility connection costs affect the final number.
City of Boise requires a minimum 3-foot side setback and 6-foot rear setback for DADUs in most residential zones, though these can vary. ACHD right-of-way along alleys may also limit buildable area. We verify your specific parcel before design begins.
From consultation to certificate of occupancy, most Boise projects run 10–14 months. Boise Development Services has improved permit timelines, but Idaho Power utility coordination can add 2–4 months depending on your location and service capacity.
Yes. We are licensed and bonded in Idaho. Our Idaho contractor registration number and Washington State license number are listed on our About page and in the footer of this site.
Get In touch
Send us a message today. We'll review your info and be in touch to discuss opportunities for your Boise property!
Prefer to talk through it? Call us now at (208) 247-9452 and ask for a Boise DADU consultation.
No obligation, no pressure — we start with what’s actually buildable on your Boise lot. If you're not sure where to start and would like more info-- give us a call, we're happy to help.
Phone: (208) 247-9452
Email: [email protected]
Boise DADU specializes in permitted detached accessory dwelling units (DADUs) and ADUs across Boise, Meridian, Eagle, and the greater Treasure Valley.
Phone: (208) 247-9452
Email: [email protected]
Location:
Boise, ID 83702
ID Contractor Reg #: [ID NUMBER HERE] | WA License #: [WA NUMBER HERE]