Accessory dwelling unit construction cost — Meridian, ID
Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
The amount you spend depends on the size of the unit, whether you are building from scratch or converting an existing structure, and the quality of your finish materials. Foundations, utility connections, and local labor rates also play a significant role. We provide exact pricing confirmed free on the call.
Frequently asked in Meridian
What is the cost of an ADU in Meridian?
How do I get an ADU estimate in Meridian?
Can I get financing for an ADU in Meridian?
What are homes with mother-in-law suites like in Meridian?
Homes with mother-in-law suites in Meridian offer private living spaces. These suites are designed for family members or guests. They typically include a bedroom, bathroom, and a small kitchen or kitchenette. These additions can significantly increase a home's functionality and value. We help you find builders for these spaces.
What exactly is an accessory dwelling unit?
An accessory dwelling unit (ADU) is a secondary housing unit on a single-family lot. It's a separate living space with its own entrance, kitchen, and bathroom. ADUs can be attached to the main house or detached, like a backyard cottage. They're a great way to add space or rental income. We help you find local builders.
How do I get an ADU quote in Meridian?
Are prefabricated ADUs a good option in Meridian?
Also serving nearby: Nampa · Boise City · Bend · Spokane Valley · Spokane
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Meridian — population 134,801; about 3,657 residents per square mile across 36.9 sq mi. ZIP codes covered include 83642, 83646, 83680.
Neighborhoods served in Meridian: Columbia Village, Ten Mile Creek, Downtown Meridian, Lake Forest, The Village at Meridian — and every surrounding area.
Areas we serve
Browse by state, then city.