ADU construction, all four types
We compare detached, attached, garage conversion and JADU on your actual lot, then design, permit and build the one that fits, through utility hookups and final inspection.
The four types side by side
A detached ADU stands alone in the yard, with the most privacy and the most foundation and trenching. An attached ADU shares a wall with the house, which can shorten utility runs. A garage conversion reuses a structure that already exists, if its slab and framing are sound. A JADU is carved out of the existing house, up to 500 square feet, with its own entrance. We lay these out for your lot so the trade-offs are plain before anything is drawn.
Feasibility first
State law sets the outer rules for ADUs, and each city applies them through its own zoning and plan check. Our lot review covers setbacks, lot coverage, easements, fire hazard mapping and the distance to the sewer and power lines. That review tells you which types are possible and which ones will cost more to make work.
Utilities and the final inspection
Sewer, water, power and sometimes gas have to reach the unit. A long run across the yard or a panel that needs an upgrade changes the budget, so we price those early. The project ends when the city signs off on the final inspection and the unit can legally be lived in.
ADU Construction: questions
State law requires cities to act on a complete ADU application within 60 days. Corrections can add time, which is why we prepare the drawings carefully before submitting.
In most cases, yes. Some cities and some JADU arrangements carry owner-occupancy or rental term conditions, and we check those for your property.
Often, because the shell already exists. That changes when the slab, framing or roof needs heavy work, which is what the lot review is for.
Find out which ADU your lot allows
Send the address. We review the parcel and come back with the types that fit and what each one involves.