Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
Accessory dwelling units, or ADUs, are secondary residences that share a lot with a main house. These units allow you to increase your property value and utility without buying a new home. You need these when your household needs are changing and you need more flexible living space.
Frequently asked in Nampa
What is involved in ADU construction in Nampa?
Are prefab ADUs a good option for Nampa homeowners?
What are the requirements for ADU services in Nampa?
Where can I find information on accessory dwelling unit grants in Nampa?
What is considered an emergency ADU situation in Nampa?
What is an ADU unit and how does it apply to Nampa properties?
An ADU unit is a secondary housing unit on an existing single-family lot in Nampa. It has its own independent living facilities. These can be attached to the main house or be a detached structure. The specialists can help you choose the best ADU unit for your property.
What are the options for accessory dwelling unit financing in Nampa?
Also serving nearby: Meridian · Boise City · Bend · Spokane Valley · Spokane
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Nampa — population 114,268; about 3,286 residents per square mile across 34.8 sq mi. ZIP codes covered include 83651, 83652, 83653, 83686, 83687.
Neighborhoods served in Nampa: Downtown Nampa, West Nampa, East Nampa, Skyline, Greenhurst — and every surrounding area.
Areas we serve
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