ADU Company in Santa Ana, CA
Lodgewick ADU Builders is the ADU company Santa Ana homeowners call when a backyard unit needs to be built, legalized, or brought up to code. We’re part of the Kingswell family, and every project runs on The Kingswell Guarantee: a written price before work begins, a defined arrival window, a clean job site, and a written guarantee on every build. Santa Ana’s tight lots and older housing stock create planning and compliance questions most Orange County contractors never deal with. Call (254) 602-5618 and a live person picks up.
Why Santa Ana Homes Are Different
Santa Ana is one of the most densely populated cities in the country, with more than 12,000 people per square mile. That density shows up in the housing stock: small-lot single-family homes mostly built between the 1940s and 1960s, many with detached single-car garages that are the perfect footprint for an ADU conversion but tightly constrained by lot coverage and setback rules. We work within those limits every week.
Older neighborhoods like Floral Park and French Park add another layer. Homes from the 1920s through the 1940s often still carry knob-and-tube wiring and cast-iron drain lines, both of which must be addressed before an ADU can pass plan check. And because Santa Ana sits inland on the coastal plain, summer heat loads run higher than most buyers expect. A garage conversion with heavy western exposure will overheat without a properly sized mini-split system and upgraded insulation. Title 24 compliance in Santa Ana almost always requires that combination, where a simple approach might pass a few miles toward the coast.
Then there’s the thing that makes Santa Ana genuinely different from every other city in Orange County: a striking share of local ADU permit applications are for structures that already exist. Families are legalizing backyard rooms and garage conversions built years or decades ago without permits, working through California’s ADU amnesty pathway and Santa Ana’s specific plan-check process for as-built structures. A contractor who only knows new construction is at a real disadvantage here. We help homeowners bring those existing spaces into the light.
Our Main Santa Ana Services
Most Santa Ana homeowners come to us for one of three things: adding square footage to the main house, converting a detached garage into a dwelling unit, or building an ADU from the ground up. Each has its own Santa Ana page below with pricing, timelines, and local specifics.
Home Addition Contractor in Santa Ana
Adding a bedroom, bath, or family room to a Santa Ana house means working within a tight envelope, because most lots in this city run 5,000 to 6,500 square feet and setback rules leave little room to spare. We plan additions that fit the existing roofline and foundation constraints rather than fighting them. The permitting picture is shaped by the same aging infrastructure found across the city, so we coordinate electrical panel upgrades and sewer-line work as part of a single written scope. Home Addition Contractor in Santa Ana has full details.
Garage Conversion Contractor in Santa Ana
Santa Ana’s attachment to the detached single-car garage makes it one of the most garage-conversion-heavy cities we work in. A 1940s-1960s garage converted to a unit is often the fastest path to a rental or in-law space, but it rarely survives plan check without structural reinforcement, new foundation work, and a full rewire. Western-exposure conversions in particular need thoughtful cooling design so the summer heat doesn’t make the unit unusable. We walk homeowners through the as-built legalization process when the garage in question was already converted informally. Garage Conversion Contractor in Santa Ana covers pricing and stages.
ADU Builders in Santa Ana
Ground-up detached ADUs in Santa Ana are usually 400 to 800 square feet, built to hug lot-line and setback constraints that leave frustratingly little margin for error on a dense block. We handle the full path from site assessment through plan check, foundation, framing, and finish, including the prefab route where it fits. For homeowners working with Abodu, Cover, or Boxabl, we manage site prep, utilities, and finish coordination so the factory-built shell lands on a ready site. ADU Builders in Santa Ana has the full picture.
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 Santa Ana
We work hands-on with prefab ADU systems from Cover, Dvele, and Boxabl, along with James Hardie siding where the design calls for it. Because we match the system to the lot, budget, and timeline rather than forcing one onto every project, turnaround depends on the build path you choose. See our brands for the full range.
Pricing for ADU Company in Santa Ana, CA
| Service | Typical range in Santa Ana |
|---|---|
| New detached ADU (400-800 sq ft) | $180,000 – $320,000 |
| Garage conversion to ADU | $95,000 – $185,000 |
| JADU conversion (interior) | $60,000 – $110,000 |
| Prefab ADU (site prep, utilities, finish) | $140,000 – $290,000 |
| Home addition (room or suite) | $120,000 – $240,000 |
| Electrical panel upgrade | $3,500 – $7,500 |
| Cast-iron drain line replacement | $6,000 – $14,000 |
| Knob-and-tube wiring remediation | $8,000 – $20,000 |
| Mini-split HVAC install for converted garage ADU | $7,500 – $15,000 |
| As-built legalization (plan check, corrections, permits) | $25,000 – $70,000 |
Prices in Santa Ana skew higher than coastal Orange County when the project involves a pre-1940s home, because knob-and-tube remediation and cast-iron drain replacement show up so often. Before any work starts, you’ll have a written price from us, so the number doesn’t change at the door.
Neighborhoods We Serve in Santa Ana
Our crews work across Santa Ana from Floral Park to French Park to the blocks west of Bristol Street. Here are a few areas we know well:
- Floral Park
- French Park
- Wilshire Square
- Washington Square
- Morrison Park
Across the city, we schedule a defined arrival window and keep the job site clean while we’re there. That’s part of the guarantee in writing.
Service Area – Cities Near Santa Ana
In addition to Santa Ana, our crews serve the surrounding Orange County communities. That includes Tustin, CA, Orange, CA, Garden Grove, CA, and Costa Mesa, CA. If your property sits in one of these cities or just outside the Santa Ana line, call and we’ll confirm coverage.
Serving Santa Ana, CA - Our Local Coverage Area
We’re based in the Santa Ana 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 Santa Ana
A live person answers our phone 24/7, so you’ll never leave a voicemail about your Santa Ana project. When you call (254) 602-5618, we get you scheduled for a site visit and written estimate as soon as our schedule allows.
California law limits what HOAs can restrict, but some Santa Ana HOAs still require notice or review before an ADU or garage conversion moves forward. We help homeowners identify their HOA’s rules early so the application doesn’t stall. Most single-family lots in the city aren’t in HOAs at all.
Yes, and this is a big part of our work in Santa Ana. We guide as-built structures through plan check, corrections, and permit finalization under the state’s ADU amnesty provisions. Call (254) 602-5618 and we’ll walk you through what your specific situation requires.
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 Santa Ana 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"Built a backyard unit for my mother in law. They handled the permits, gave me a real timeline, and stuck to it within a few days. The written price is what we paid, which anyone who's done construction knows is rare."
- Dennis Fairchild