A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Fullerton, CA
An ADU, or accessory dwelling unit, is a second smaller home built on the same lot as your main house. In Fullerton, that often means converting a detached garage behind a 1920s bungalow or adding a backyard cottage to a mid-century ranch. Lodgewick ADU Orange County handles the whole job from permits to final walkthrough, and every Fullerton project starts with a written price before any work begins. Call (350) 203-6060 for a free estimate on your Fullerton ADU.
Why Fullerton Homes Are Different
Fullerton’s older neighborhoods, like the streets around downtown with their 1920s-1950s bungalows, often sit on narrow, deep lots with detached garages at the back. That changes how we approach an ADU. These projects are less about adding raw square footage and more about working within historic district guidelines and tight setbacks. A garage conversion in that zone needs a different touch than a new backyard cottage in the northern or eastern parts of the city, where single-story homes sit on more generous lots.
The housing stock varies block to block. Pre-war Craftsman bungalows, mid-century ranch homes, and post-war tract developments all exist within a few miles of each other. That variety is why we don’t bring a one-size-fits-all ADU plan to Fullerton. In the Sunny Hills neighborhood, many ranch homes have wide side yards that can squeeze in an attached ADU without triggering a lot split, a pattern that’s less common in denser parts of Orange County. Fullerton’s hot, dry summers also mean ADUs here need proper insulation and ventilation, though we don’t have to plan for the extreme freezes you’d see further inland or in the mountains. Outdoor living space matters to Fullerton homeowners, so we regularly integrate ADU designs with patios and yard access.
Our Main Fullerton Services
Fullerton homeowners reach out to us most often about three ways to add livable space: home additions, garage conversions, and standalone ADUs. Each has its own page with Fullerton-specific pricing and details.
Home Addition Contractor in Fullerton
A Home Addition Contractor in Fullerton builds out from the existing footprint of your home. In Fullerton, that often means extending a ranch home’s floor plan into a wide Sunny Hills side yard or adding a primary suite to the back of a post-war tract house. The local condition that matters most here is lot shape: Fullerton has many deeper-than-average lots, which works well for rear additions, but the historic neighborhoods near downtown bring setback rules that we account for before the first plan is drawn. Russ Delmar oversees every addition project in Fullerton, and the written price you receive before work starts is the price you pay, full stop.
Garage Conversion Contractor in Fullerton
A Garage Conversion Contractor in Fullerton turns an existing garage into a livable space, whether that’s a rental unit, an office, or an in-law suite. Fullerton’s older bungalows often have detached garages at the back of a narrow, deep lot, which actually works in your favor: the structure is already there, and converting it into an ADU often costs less than building new. We handle insulation, drywall, electrical, plumbing, and the finished living area, and we make sure the final result meets Fullerton’s ADU requirements while staying within historic district guidelines where they apply.
ADU Builders in Fullerton
An ADU Builders in Fullerton handles ground-up construction of a new accessory dwelling unit on your property. For Fullerton homeowners with a wide side yard or a large backyard, a new standalone ADU or attached junior ADU is often the best route. We walk every lot before giving a price, because Fullerton’s mixed housing stock means every property has different access, setback, and utility connection points. You’ll get a written price before any work starts, a real arrival window, and a written guarantee on the finished build.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Fullerton
We service ADUs built by Cover, Dvele, and Boxabl in Fullerton. Common replacement parts are stocked in our local inventory, and we can usually complete a standard service call within a single visit. Visit our brands page to see the full list of manufacturers we work with.
Pricing for ADU Company in Fullerton, CA
| Service | Typical range in Fullerton |
|---|---|
| Garage conversion (finish-out only, structure exists) | $80,000 – $120,000 |
| Garage conversion (full teardown and rebuild) | $140,000 – $200,000 |
| New detached ADU (400 – 600 sq ft) | $180,000 – $260,000 |
| New detached ADU (700 – 1,000 sq ft) | $260,000 – $350,000 |
| Attached ADU (addition to existing home) | $150,000 – $240,000 |
| Home addition (primary suite, 300 – 500 sq ft) | $120,000 – $200,000 |
| Home addition (family room or kitchen extension) | $90,000 – $160,000 |
| Prefab ADU (including installation and site prep) | $150,000 – $280,000 |
What pushes a Fullerton ADU price higher than the baseline is usually lot access, foundation work on older parcels, or historic district review requirements near downtown. A tight side yard that can’t fit equipment, or a detached garage that needs new footings before we can convert it, adds cost. That’s why the written price we give you in Fullerton is based on an actual site visit, not a phone guess, and it’s the number you pay. No change orders at the door.
Neighborhoods We Serve in Fullerton
We work throughout Fullerton, and our crews are usually on site within one to two weeks of a signed contract, depending on the season and permit queue. Neighborhoods we serve regularly include:
- Sunny Hills
- Downtown Fullerton and the surrounding historic district
- Golden Hill
- Raymond Hills
- North Fullerton (Orangethorpe and Rolling Hills areas)
Service Area – Cities Near Fullerton
Beyond Fullerton, we also serve homeowners in Anaheim, CA, Santa Ana, CA, Midway City, CA, and Tustin, CA. If your home is in one of these nearby cities, the same written-price commitment applies, and the same Fullerton-area crew may be the one that shows up, background-checked and in uniform.
Serving Fullerton, CA - Our Local Coverage Area
We’re based in the Fullerton area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Fullerton
Most Fullerton projects start within one to two weeks after you sign the contract. The bigger variable is the city’s permit review timeline, which can run anywhere from a few weeks to a few months depending on whether the property is in a historic district. We handle the permit paperwork, and your written price includes that work.
Yes, especially near downtown, where historic district guidelines and narrow lots create tighter building envelopes than you’d find in newer parts of the city. We review setback requirements and any HOA conditions before we give you a written price, so you’re not surprised later. Call (350) 203-6060 and we’ll look up your specific property.
No. The price you receive in writing before work begins is the price you pay. If site conditions change after demolition or grading, we discuss any adjustment with you before proceeding, in writing. You’ll never see a surprise change order at the door. Call (350) 203-6060 for a free, no-obligation ADU estimate in Fullerton.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Fullerton Customers Say
"The ADU came out beautiful and the permitting, which terrified me, was handled start to finish. They kept me updated every week so I was never wondering what was happening."
- Shauna Mills"A whole backyard ADU from scratch. Terrified me going in, but they kept me updated weekly and there were no nasty surprises. Quality work and a fair price."
- Noreen Fletcher"Junior ADU conversion inside the house. They protected the rest of our place with plastic and daily cleanup. Done nearly on schedule and on the number they quoted."
- Sabrina Veld
