10 Best ADU Builders in Boise, Idaho

Verified ADU contractors and builders in Boise, ID

Showing 110 of 10 listings

208 Tiny Homes - Boise Tiny Home & ADU Builder

Specializing in ADU construction and tiny home building throughout the Boise area, this contractor transforms properties with thoughtfully designed accessory dwelling units and compact homes. Whether you're looking to maximize your lot, create rental income, or build a sustainable living space, they deliver quality craftsmanship tailored to Idaho's unique climate and building requirements.

+1 208-315-5295
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All Wood ADU, LLC

Specialized ADU contractor serving the Boise area, offering expert design and construction of accessory dwelling units for homeowners looking to expand their property's potential. From initial planning through final completion, we deliver quality craftsmanship tailored to your specific needs and local building requirements.

+1 208-982-7591
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Berbower Builds

Specializing in accessory dwelling unit construction throughout the Boise area, this contractor helps homeowners add rental income or multi-generational living space to their properties with expert planning and quality craftsmanship. From initial design consultation to final completion, they manage every phase of building your ADU to maximize your property's potential.

+1 208-350-8621
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Boise Pro Builders

Home and Commercial Remodeling Experts in Boise, Idaho. Boise Pro Builders excels in ADU (Additional Dwelling Unit) construction, including MIL suites, garage conversions, and granny flats.

(208) 807-6366
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Caveman Custom Garages

Transform your underutilized garage into functional living space with expert conversion services in the Boise area. From design to completion, we specialize in converting garages into bedrooms, offices, studios, and recreation rooms tailored to your home's needs.

+1 208-917-0814
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Clearwater Home Services

Specializing in ADU construction and conversions throughout the Boise area, this contractor helps homeowners maximize their property by creating separate living spaces for rental income or extended family. Whether you're building from scratch or converting existing structures, they deliver quality accessory dwelling units tailored to your home and budget.

+1 208-994-8862
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Freimark Construction

We combine luxury design, premium materials, and unparalleled craftsmanship to create stunning, functional kitchens that become the true heart of your Boise ADU. From planning to construction, we’ll help you create an ADU that adds flexibility and long-term value.

(208) 812-4401
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Levco Builders

Transform your unused garage space into a functional living area with expert garage-to-living-space conversions in Boise. Our experienced team handles every detail from design through completion, creating beautiful new rooms that maximize your home's potential.

+1 208-947-7261
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VertiCon Construction

Transform your Boise garage into functional living space with expert conversion services that maximize your home's potential. From design through completion, we specialize in converting garages into bedrooms, studios, and family rooms tailored to your needs.

+1 208-298-9921
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Western Idaho Builders LLC

We specialize in transforming garages into functional living spaces, including bedrooms, offices, and recreational areas for Boise homeowners. Our expert team handles all aspects of the conversion process, from design and permitting to construction and finishing touches.

+1 208-989-2465
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Frequently Asked Questions — ADU Builders in Boise

How much does it cost to hire an ADU builder in Boise?

ADU construction costs in Boise, Idaho vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Boise to get accurate quotes for your specific project.

How long does it take to build an ADU in Boise?

In Boise, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Idaho local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Boise?

Yes, a building permit is required for ADU construction in Boise, Idaho. Your ADU builder will typically handle the permit application as part of their service. Idaho has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Boise?

Common ADU types in Boise include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Boise ADU builder can advise on what's allowed on your specific parcel.