Give aging parents, adult children, or extended family a private, comfortable space of their own while keeping everyone close to home.
Custom ADU Builder
in Boise & the Treasure Valley
Get Started on Your ADU
Acadia Building Company designs and builds custom accessory dwelling units (ADUs) throughout Boise, Meridian, Nampa, Caldwell, and the surrounding Treasure Valley communities. Whether you're planning a detached backyard cottage, an attached suite, or a garage conversion, our team brings the same thoughtful design, quality craftsmanship, and personalized process you'd expect from a fully custom home build.
What Is an ADU?
An accessory dwelling unit, or ADU, is a smaller, independent living space built on the same lot as a primary residence, attached, detached, or created from existing space like a garage. Across the Treasure Valley, ADUs have become a popular way for homeowners to add flexible living space, host family, or generate rental income without buying a new property.
Why Build an ADU?
An ADU is one of the most flexible investments you can make in your property. Homeowners throughout Boise and the Treasure Valley are adding ADUs for a variety of reasons, including:
Rental Income Potential
A well-designed ADU can create a long-term rental or guest suite, helping offset your mortgage or fund future projects.
A Guest Suite or Home Office
From visiting guests to a quiet, dedicated place to work, an ADU adds functional square footage that adapts as your needs change.
Added Property Value
A thoughtfully designed ADU can increase the long-term value and versatility of your property.
SOUTHWESTERN IDAHO CONTRACTOR
We Build Fully Custom Accessory Use Buildings Throughout the Treasure Valley
Acadia Building Company offers a fully custom building experience for ADUs and accessory structures. Each project we take on is uniquely tailored for the homeowner we’re building for, and we work closely with you to balance your goals and budget and deliver a high-quality, truly customized result.
Our range of experience allows us to build ADUs everywhere from rural acreage properties in Star, Kuna, and Middleton to established city lots, helping you make the most of your property’s unique qualities. We evaluate zoning and permitting requirements to precisely define your ADU project’s scope and determine what is feasible on your property.
Building ADUs Throughout Idaho's Treasure Valley and Surrounding Areas
Acadia Building Company builds accessory dwelling units for homeowners across Boise, Eagle, Meridian, Nampa, Caldwell, Garden City, Kuna, Star, Middleton, Emmett, Melba, Marsing, Fruitland, and New Plymouth.
Assess Property & Zoning
We begin by evaluating your property's zoning, setbacks, utility access, and site constraints, and we review permitting requirements to confirm feasibility and define project parameters.
Design
Every ADU build starts with a plan, whether it's a design you already have in mind or one our in-house team helps create. We tailor the layout to your lot, your budget, and how you plan to use the space.
Prepare
Once the design is finalized, we gather subcontractor bids and help you select the finishes, fixtures, and materials that fit your ADU's purpose and budget.
Build
With plans approved and specifications finalized, we set a timeline and get to work, bringing the same craftsmanship, communication, and on-site oversight you'd expect on a full custom home.
Frequently Asked Questions About Building an ADU in Boise & the Treasure Valley
What is an accessory dwelling unit (ADU)?
An ADU is a secondary, independent living space located on the same property as a primary home. ADUs can be attached to the main house, fully detached, or created by converting existing space such as a garage.
Are ADUs allowed on my property?
ADU regulations, including size limits, setbacks, and permitting requirements, vary by city and county throughout the Treasure Valley. Our team can help you understand what’s allowed on your specific property as part of our design and planning process.
Can I build an ADU on land I already own?
Yes. We regularly build ADUs on privately owned lots ranging from rural acreage to urban infill properties. Our team can evaluate your property’s unique characteristics and guide you through the planning and construction process.
How much does it cost to build an ADU?
Every ADU project is different, and cost depends on factors like size, finishes, site conditions, and utility connections. During your consultation, we’ll help you understand what’s realistic for your goals and budget.
Can I rent out my ADU?
Many homeowners build ADUs specifically to generate rental income or house long-term tenants. Rental rules can vary by city, so we recommend confirming local regulations as part of your planning process.
How long does it take to build an ADU?
Timelines vary depending on the size and complexity of the project, as well as permitting and site conditions. During your consultation, we’ll provide a realistic timeline based on the scope of your specific ADU.
Do you offer fully custom ADU designs?
Absolutely. We work closely with homeowners to design ADUs tailored to their property, lifestyle, and goals, whether that means a detached backyard cottage, an attached suite, or a garage conversion.
Contact Acadia Today!
Ready to bring your vision to life? Contact our team to discuss your property, goals, and timeline. Let’s start designing your dream home in the Treasure Valley and Southwest Idaho.
Phone:
Email:
Location:
Treasure Valley, Idaho and Surrounding Areas
