A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Orange County, CA
Lodgewick ADU Orange County is an ADU company serving homeowners across Orange County with accessory dwelling units (a second, smaller home on your existing lot), garage conversions, and home additions. Orange County’s housing stock presents a specific challenge: most single-family homes were built between the 1960s and 1980s on suburban lots that predate modern ADU codes. We handle the permits, the site work, and the build under The Kingswell Guarantee, which puts a written price and a written warranty in your hand before the first nail goes in. Call (350) 203-6060 and a live person answers, day or night.
Why Orange County Homes Are Different
Orange County is the epicenter of California’s ADU construction boom, and the numbers tell the story. Santa Ana and Anaheim have issued thousands of ADU permits since 2020, driven by state mandates like SB 9 and AB 68 that override many local restrictions and by housing costs that make a rental unit on your own lot a practical income source. The opportunity here is real: build a high-return rental unit in a single-family neighborhood, often with a prefab or detached conversion, and benefit from city-specific expedited review processes and fee waivers that older markets simply don’t have.
The housing stock adds its own wrinkles. Large-lot tracts in places like Garden Grove and Westminster squeeze detached ADUs tight against setback lines, so a garage conversion often makes more sense there than a ground-up build. Newer master-planned communities in Irvine and south county have larger setbacks but strict HOA architectural review, which we’ll walk you through before you pay for a plan. Mild, dry summers and wet winters mean roofs and moisture barriers need to be done right the first time. And subterranean termites are a constant in Orange County soil, so any attached ADU or garage conversion needs a termite inspection before framing closes up.
Our Main Orange County Services
Most Orange County homeowners call us about one of three projects. Each has its own page with full pricing and process detail.
Home Addition Contractor in Orange County
A Home Addition Contractor in Orange County works within the gray area between remodel and ADU. You’re adding square footage to the main house, not building a separate home, which changes the permit path, the foundation requirements, and the way your lot’s coverage ratio applies. On Orange County’s 1960s-era tract homes, we regularly deal with roof ties that need reinforcing, electrical panels at capacity, and slab foundations that require step-downs for the new footprint. Russ Delmar leads each addition with a written scope that includes every permit fee and a line-item materials list before you sign anything. Full details on the service page.
Garage Conversion Contractor in Orange County
A Garage Conversion Contractor in Orange County turns your existing two-car garage into a permitted living space, typically 400 to 480 square feet. In older Orange County neighborhoods like Garden Grove, where smaller lots make detached ADUs a tight fit, a garage conversion is often the fastest and most affordable path to a rental unit or an in-law suite. The work involves raising the slab to meet floor-level code, insulating walls and the existing roof structure, replacing the garage door with a wall and window assembly, and routing plumbing and electrical. We pull the permit, manage inspections, and give you a written price before demo starts. Detailed breakdown on the service page.
ADU Builders in Orange County
ADU Builders in Orange County handle the full scope: detached units in the backyard, attached units, and JADUs (junior accessory dwelling units, a smaller ADU built within the envelope of the existing house). Many Orange County lots in Irvine and south county have enough side yard for a detached 800 to 1,000 square foot unit, and we work with prefab manufacturers like Abodu, Cover, and Dvele to cut site time. HOA rules in communities like the Great Park neighborhoods often require the new unit to match the main house’s exterior materials and colors, and we have built several “Great Park-approvable” plans. Full details and pricing on the service page.
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 Orange County
We work with leading ADU manufacturers and materials suppliers, including Abodu, Cover, Dvele, and Mighty Buildings. We stock James Hardie siding and common trim profiles locally, so standard exterior work doesn’t stall waiting on a truck. For full details on what we service and install, see our brands. If you already have a manufacturer in mind, tell us on the call and we’ll match the plan to your lot and budget.
Pricing for ADU Company in Orange County, CA
Here is what Orange County homeowners typically pay for the most common jobs. These are total project ranges, written before work begins, and they do not change at the door.
| Service | Typical range in Orange County |
|---|---|
| Detached ADU (400 – 600 sq ft, site-built) | $160,000 – $225,000 |
| Detached ADU (600 – 800 sq ft, site-built) | $225,000 – $290,000 |
| Detached ADU (800 – 1,000 sq ft, site-built) | $290,000 – $350,000 |
| Detached ADU using prefab (Abodu, Cover, Dvele, Mighty Buildings) | $180,000 – $320,000 |
| Attached ADU (400 – 600 sq ft) | $140,000 – $200,000 |
| JADU (junior ADU, inside the existing home) | $85,000 – $130,000 |
| Garage conversion to ADU (standard 2-car, 400 – 480 sq ft) | $120,000 – $170,000 |
| Home addition (200 – 400 sq ft) | $90,000 – $155,000 |
| Home addition (400 – 600 sq ft) | $155,000 – $225,000 |
Prices in Orange County get pushed up by HOA architectural review requirements, termite treatment on existing structures, and lot conditions like older slab foundations that need structural work before framing. We give you a written price after a site visit, and that’s the price you pay unless you add scope. No change orders at the door.
Neighborhoods We Serve in Orange County
We serve all of Orange County, from the older tract neighborhoods to the newer master-planned communities. Here are some of the areas where we’re currently building and converting.
- Irvine, including Great Park and Woodbridge
- Anaheim and Anaheim Hills
- Garden Grove and Westminster
- Santa Ana and Tustin
- South county: Lake Forest, Mission Viejo, and Laguna Niguel
Our crews are dispatched from a Los Angeles-area office, and we schedule Orange County work in consolidated blocks, so response time for estimates across the county is usually within a week to ten days depending on the current build schedule.
Service Area – Cities Near Orange County
Sometimes homeowners ask if we also work in cities just outside Orange County. We do. Our service area covers Anaheim, CA, Costa Mesa, CA, Fullerton, CA, and Lake Forest, CA. If you’re on the edge of one of these cities, call us and we’ll confirm coverage for your specific address.
Serving Orange County, CA - Our Local Coverage Area
We’re based in the Orange County 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 Orange County
We schedule estimates across Orange County in consolidated blocks, so depending on the current build schedule and your city, you can usually expect a site visit within a week to ten days. After the visit, you get a written line-item price under The Kingswell Guarantee, including permit fees and every material. Call (350) 203-6060 to get on the schedule.
Yes. We prepare the plans, submit to the city, and walk them through plan check, revisions, and inspections. Where an HOA has architectural review, including communities like Great Park in Irvine, we handle the application and the exterior-matching requirements. You get a copy of every submission and every approval. Call (350) 203-6060 for a free estimate on your specific lot.
No. The written price we give you before work begins is the price you pay, unless you change the scope. That commitment is part of The Kingswell Guarantee, along with a written warranty and a free return visit if anything fails within the 365-day guarantee period. Call (350) 203-6060 to start with a free estimate.
Ready to talk about your Orange County project? Call Lodgewick ADU Orange County at (350) 203-6060. A live person answers, we’ll ask about your lot and your goals, and we’ll schedule a free estimate. We put the price in writing before the first nail goes in, and we stand behind the work with a written guarantee.
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 Orange County Customers Say
"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"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt"Added a suite for my dad. They walked us through every cost before a hammer swung and stuck to it. The written price is what we paid, no change orders."
- Ingrid Salazar
