Detached ADUs
A separate site-built home with its own foundation, envelope, systems, and outdoor relationship.
Service index · Fullerton
ADU construction services for Fullerton homes.
We build around the house and lot you already own. That means checking the existing structure, access, utilities, permit path, and finish decisions before the crew receives a scope.
01 · Four project types
Choose the work by what the property can support.
A detached backyard unit gives the new home its own structure. An attached ADU shares part of the main house. A garage conversion works inside an existing shell, while a JADU stays within the home and follows a narrower program.
The right label is only the beginning. We look at how the unit will be used, where people enter, how privacy works, and what has to change in the existing home.
Garage conversions
A close look at slab, walls, roof, openings, utilities, moisture, and the space lost to parking or storage.
Attached ADUs
New living area connected to the main home, with careful structural and weatherproofing coordination.
JADUs
A compact unit created within an existing or proposed home, with program and facility limits to confirm.
02 · What construction includes
The proposal should describe the whole job.
A building price means little when site work, utility upgrades, permit responses, finish allowances, and repair of existing surfaces sit outside it. We organize those pieces so the owner can see what is included.
During preconstruction, we match the drawing version to the proposal and flag open choices. During the build, changes are documented with their effect on cost and schedule. At closeout, the remaining inspection and handoff items should be clear.
03 · Start the conversation
Bring the address, goal, and biggest unknown.
You do not need a finished plan to call. Photos, rough measurements, a survey, utility information, or old permits give us something concrete to discuss.
If the project already has drawings, tell us the current revision and City status. We can discuss what a construction review should cover before you compare bids.
What to review next
Follow the issue into the rest of the job.
Use these Fullerton guides to connect this decision with cost, permits, design, or field work.
Detached and backyard ADU construction
Get the Fullerton details for this part of the project.
Fullerton garage conversions
See how this question changes the proposed work.
Attached ADU construction
Prepare the information needed for that review.
JADU construction
Get the Fullerton details for this part of the project.
Prepare for an estimate
See how this question changes the proposed work.
Agency information
Agency requirements can move. Check the source again when the project reaches this decision.
Before you price it
A short site conversation can prevent a vague bid.
Describe the existing house, yard access, and intended use. We can point out the records and field conditions that belong in the estimate.