Adu unit — Nampa, ID
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
An ADU unit is a secondary housing structure located on the same lot as a primary home. Whether you need a home office, a gym, or a guest house, an ADU adds functional square footage to your land. You need this when you run out of space inside your main house but don't want to move.
Frequently asked in Nampa
Where can I find an accessory dwelling unit contractor in Nampa?
What is the cost of an accessory dwelling unit in Nampa?
Are affordable accessory dwelling units available in Nampa?
What is the accessory dwelling unit permit cost in Nampa?
What makes an ADU the best option for my Nampa property?
Are there specific accessory dwelling unit requirements in New Hampshire?
What is the typical ADU cost 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: Lakeview, Greenhurst, Franklin, Park Ridge, South Nampa — and every surrounding area.
Areas we serve
Browse by state, then city.