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
A home with an in-law suite includes a private, self-contained living area for family members, often attached to the main residence. If you want to keep aging parents or adult children close while maintaining everyone's privacy, this is the solution. We help you design these spaces to blend with your current home layout.
Frequently asked in Nampa
What's involved in ADU building in Nampa?
Can I build a backyard Accessory Dwelling Unit in Nampa?
Are there any Accessory Dwelling Unit grants available in Idaho?
What are 'homes with mother-in-law suites' in Nampa?
What's a detached Accessory Dwelling Unit?
What are Accessory Dwelling Units (ADUs) in Nampa?
What's required for an Accessory Dwelling Unit permit 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: West Valley, Skyline, Downtown Nampa, East Nampa, Central Nampa — and every surrounding area.
Areas we serve
Browse by state, then city.
