ADU Builder in Boise & the Treasure Valley

Custom accessory dwelling units — detached backyard cottages, garage conversions, and basement suites — designed and built across Boise and the Treasure Valley.

Thinking about adding an accessory dwelling unit (ADU) to your property? Jones Quality Remodeling designs and builds ADUs across Boise and the Treasure Valley \u2014 from detached backyard cottages to garage conversions and basement suites. With 27 years of local remodeling and custom-building experience (Idaho license RCE-41296), we handle your ADU from design through permitting to final build.

What is an ADU?

An accessory dwelling unit is a self-contained second home on the same lot as your primary residence, with its own kitchen, bathroom, and sleeping area. Homeowners add them for rental income, to house family, or to add long-term value. Common types we build include:

Detached ADUs \u2014 freestanding backyard cottages or granny flats.
Garage conversions \u2014 turning an existing garage into living space.
Above-garage units \u2014 living space built over a garage footprint.
Basement apartments \u2014 a finished, self-contained suite inside your home.

Boise is one of Idaho’s more ADU-friendly cities

Idaho recently expanded homeowners’ rights to build ADUs (Senate Bill 1354, 2026), and Boise’s code is already among the more accommodating in the state. That said, zoning eligibility, size limits, setbacks, and permitting all vary by parcel \u2014 and the rules are actively changing. We help you understand what’s possible on your specific lot and manage the permitting so your project is built to code. We’ll walk you through the current specifics during a free consultation.

Why build an ADU?

Rental income \u2014 a long-term rental unit on your existing property.
Multigenerational living \u2014 a private space for aging parents or adult children.
Added property value \u2014 a permitted, well-built second unit is a lasting asset.
Flexible space \u2014 a home office, guest suite, or studio.

Our ADU process

We manage the whole project with one team: an initial consultation to assess your lot and goals, design and layout, permitting with the city, construction, and a final walkthrough. You get clear communication and a single point of contact from start to finish.

ADU frequently asked questions

Can I build an ADU on my Boise property?

Most single-family residential lots in Boise can support an ADU, but eligibility depends on your zoning, lot size, and setbacks. We assess your specific parcel during a free consultation.

What types of ADUs do you build?

Detached backyard units, garage conversions, above-garage units, and basement apartments \u2014 designed to match your existing home.

Do you handle the permits?

Yes. We manage design and the permitting process with the city so your ADU is built to code.

How big can my ADU be?

Boise sets size limits for ADUs, and the state’s rules are changing. We’ll confirm the current limits for your property during your consultation.

Serving Boise and the Treasure Valley

We build ADUs in Boise, Meridian, Nampa, Caldwell, Eagle, Star, Kuna, Garden City, and surrounding communities. Ready to explore an ADU for your property? Contact us or call (208) 447-0766 for a free consultation.