Add a mother-in-law suite or a backyard cottage that fits your property and your family — designed, permitted, and built by one locally owned custom builder.
An ADU is one of the most useful things you can add to a Boise property — room for aging parents, a place for guests or grown kids, or rental income down the road. We design and build them as true custom work: matched to your home, sited to fit your lot, and finished to last. One locally owned team handles design, permitting, and construction.
Every lot is different, so we start with what yours can support. Some homeowners want a detached backyard cottage for privacy and rental potential; others want a suite attached to the main home or built above a garage. We walk your property, weigh the trade-offs, and recommend the option that fits your goals, your budget, and Boise's rules.
Both are complete, independent living spaces with a kitchen, bathroom, and living area — the difference is whether they connect to your home or stand on their own. We build either as custom work, designed to look like it belongs with your house rather than an afterthought bolted onto the yard.
ADUs live and die by the details of local code — lot coverage, setbacks, height limits, parking, and utility connections. We review your property against current Boise zoning before design, then handle the permits and inspections so the project is buildable and on the record from the start.
Size, site work, and how far utilities have to run are the biggest cost drivers, along with your finish choices. Design and permitting typically take a few months, and a detached build usually runs four to eight months. We give you an itemized estimate and a realistic schedule up front — no surprises.
The biggest cost drivers are size, how far water, sewer, and power have to run to the new structure, site conditions like slope, and your finish level. A detached build on an easy site with standard finishes sits at the lower end; long utility runs, a tight lot, or high-end finishes move it up. We put all of it in an itemized estimate before you commit, so the number you see is the number you plan around.
Local code decides what your property can actually support — maximum size, height limits, setbacks, lot coverage, parking, and whether the owner must live on site. These vary by zone and change over time, so we confirm every one of them against current code for your specific lot before we draw anything, rather than working from assumptions. We verify each project against the current City of Boise Planning & Development Services requirements, and handle the permits and inspections from there.
We start with your goals and a look at the property, then move to a design and a clear estimate. Once you approve, we handle permitting, site work, framing, the trades, and finish work through to the final walkthrough — with one point of contact the whole way, the same as any custom home we build.
Custom home building in BoiseMost single-family lots can support one, but lot size, setbacks, existing structures, and parking all factor in. We review your property against current Boise zoning early — before design — so you know what is possible.
A suite attaches to or sits within the main home; a cottage is detached. Both are full living units — the right choice depends on your lot, budget, and how you plan to use it.
Design and permitting usually take a few months, and a detached build typically runs four to eight months depending on size, site work, and finishes.
It comes down to size, site work, how far utilities have to run, and your finish level. A detached build on an easy site with standard finishes sits at the lower end; long utility runs, a tight lot, or high-end finishes move it up. We walk your property and give you an itemized estimate up front.
An ADU is a fully independent living space, which makes it the better fit for rental income or long-term multi-generational living. A home addition in Boise expands your existing home and is often the better value when you simply need more room. We help you compare the two against your lot and goals before you commit.
Tell us about your Boise property and what you have in mind. We'll set up a conversation and a clear, honest plan — no pressure, no hard sell.
Get started