Free estimate
Free ADU Estimate in Boise, ID
Start with your address. We'll check what your lot can fit, then give you a written estimate.
What the estimate includes
- Lot check: zoning, setbacks, easements, floodplain and overlays for your address.
- Utility plan: how water, sewer and power reach the unit, and whether the panel needs an upgrade.
- Design direction: a Boise pre-approved plan where eligible, or a custom layout.
- Written, itemized price: design, permits and fees, site work, utilities, structure and finishes.
- Timeline: realistic design, permitting and construction durations.
How to prepare
Think about who the ADU is for and how it will be used: a rental, family, guests or an office. Note where you'd like it on the lot and anything that might be in the way, like trees, sheds or an irrigation ditch. Have your HOA covenants ready if you're in one.
No pressure
The lot check and estimate are free, and you're never obligated. Compare our estimate with others on the same scope, and verify any contractor's registration with the Idaho Division of Occupational and Professional Licenses. For ballpark numbers first, see the ADU cost guide.