Six things decide what fits.
People ask us if an ADU can go on their property. Usually it’s yes in some form. Which form, at what cost, is decided by six knowable things, and all six are checkable from your address before you spend anything.
01
Zoning and jurisdiction
Whether your parcel allows an ADU at all, and under whose rules.
Every city in the valley writes its own ADU code, and inside a city, overlays can change the answer street by street. The same floor plan can be simple on one parcel and a variance case two blocks away. This is the first thing we pull, and it's parcel-specific, not neighborhood gossip.
The lot check answers: Your parcel's current designation and what it permits.
02
Setbacks and buildable area
The invisible lines that decide where a building can legally sit.
Take your lot, subtract the required distances from every property line, subtract easements, and what's left is the envelope. The envelope is why compact plans exist: a lot that can't take a 695 square foot two-bed will often take a 280 square foot studio without drama.
The lot check answers: The actual envelope drawn against your lot, with every plan that fits inside it.
03
Utilities
Where water, sewer, and power are now, and what it takes to reach the new home.
The most underrated factor. Every foot between existing service and the unit is trench, conduit, and pipe, and the route matters as much as the distance. Older properties add wrinkles: septic instead of city sewer, a well, power that only exists overhead. We've built through all three on one project, so none of them scare us. They just belong in the scope on day one.
The lot check answers: Where your services actually sit and the realistic route to the unit.
04
Access
Whether the machines that build the thing can reach your backyard.
A concrete truck, an excavator, and a load of trusses all need a path. Usually that's a side yard or an alley, and its width decides methods and money. A skinny gate doesn't kill a project. It changes how we stage it, and you want a builder who measured before quoting.
The lot check answers: The equipment route, measured, and what it means for the build plan.
05
Easements and what's already back there
Recorded rights and standing obstacles inside your lot.
Utility and irrigation easements can cross exactly the corner you had in mind, and nothing habitable goes on top of them. Then there's the physical layer: the shed that has to go, the tree worth designing around, the grade that decides the foundation. The parcel record tells half this story; standing in the yard tells the rest.
The lot check answers: Recorded easements from the parcel record, plus a site walk for the rest.
06
Plan fit
Which of the six City plans, or what custom design, your lot actually takes.
The pre-approved set runs from a 280 square foot studio to a 695 square foot two-bed, plus two studio-over-garage plans for lots that need to stack. Inside Boise, fitting one of those is the shortest path to a permit. When none fit, or you're outside Boise city limits, custom is the answer, and that's the trade we come from.
The lot check answers: A straight answer: which plans fit, or why custom is the honest route.
All six factors, checked against your parcel and answered in writing. Free, and we’ll say so if it doesn’t pencil.
The dealbreakers that usually aren’t.
Most of the things homeowners assume kill a project just change its shape or its schedule.
A septic system or a well
Changes the utility plan, not the verdict. Our Meridian build had both, plus overhead-only power, and it's standing.
A tight side yard
Changes methods and staging. The compact plans exist for exactly these lots.
An HOA
Their rules stack on top of the city's. Pull your CCRs early; we'll read them with you.
Overlays and historic review
Extra review steps, not a wall. They mostly cost calendar, and you should know that before you start, not during.
A small lot
The smallest City plan is 280 square feet. Small lot rarely means no lot.
Slope
Flat lots pour simple footings; slopes need engineering. It's a design input, and it's exactly when custom earns its keep.
The one with both septic and a well: the Meridian build
Before you spend a dollar.
- 1Send the address for the free lot check. No charge, no obligation.
- 2Pull what only you can: your CCRs if there's an HOA, and any survey you have from closing.
- 3Walk your own yard. Measure the side gate, find the cleanouts, note what you'd hate to lose.
- 4Decide what the space is for: rental, family, office. The use shapes the plan.
- 5Book the site walk. We measure what the maps can't show and put the whole scope in writing.
Step one costs nothing.
Send the address. We’ll tell you what your lot allows and which plans fit. On paper, not over the phone.
Where we build: Boise · Meridian · Eagle · Nampa · Kuna · Star · Caldwell · Garden City
