Boise and the Treasure Valley · Ada County, Idaho

Modular Homes and ADUs in Boise and the Treasure Valley

Boise is one of the fastest-growing metros in the country, and land costs have made ADUs increasingly attractive for homeowners and investors. The Montera Borah — starting at $138,000 — is one of the most competitive factory-built ADU solutions available in Ada County.

Why Factory-Built Works in Boise

Ada County has seen a 169% increase in ADU permits since 2019. Modular construction shortens your timeline significantly versus site-built alternatives and removes weather and labor delays from the equation.

Zoning and Permitting in Ada County

Ada County and the City of Boise allow detached ADUs up to 900 sq ft in most residential zones. The Borah (400 sq ft), Borah Loft (528 sq ft), and Mesa (820 sq ft) all qualify. Foundation installation is the standard path for Treasure Valley ADU projects.

Not sure what applies to your property? Contact us with your address and we will tell you exactly what is possible before you commit to anything.

Which Model Fits Boise?

The Borah is the flagship ADU choice for Treasure Valley properties. The Mesa suits larger lots where a full guest house or second primary unit is the goal.

We Deliver Near

• Downtown Boise
• Meridian
• Nampa
• Eagle
• Caldwell

Adding an ADU in the Treasure Valley?

Tell us about your land and we will walk you through exactly what a Montera home looks like for your site, your county, and your budget.