ADU Company in Santa Ana — Design, Permits and Build Under One Contract

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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ADU Company in Santa Ana, CA

Kitchen remodeling in Santa Ana means working inside homes built between the 1920s and 1950s, where the original kitchen was never designed for modern cabinet depths, ventilation runs, or island clearances. We’re Casita ADU Builders, and while kitchens are our bread and butter here, we also build ADUs and remodel bathrooms across the city’s older single-story housing stock. The challenge in Santa Ana is rarely the floor plan on paper. It’s the reality behind the walls: settled stucco over wood frame, clay-rich soil that has shifted slabs over decades, and Santa Ana wind days that punish a poorly vented range hood. Call (877) 658-7475 and we’ll walk you through what your specific home needs.

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Why Santa Ana Homes Are Different

Santa Ana’s core neighborhoods, the 92701 and 92703 grid, are dominated by 1920s through 1950s single-story bungalows and Spanish Colonial Revival homes. These sit on 5,000 to 6,500 square foot lots, and the original kitchens were built small, with a single window, a freestanding stove, and no dishwasher. When we open those walls, we find balloon framing in the oldest units, inconsistent stud spacing, and decades of layered flooring that has raised the finished floor height unevenly. None of that stops a remodel, but it changes the sequence: we level the subfloor before cabinetry, we sister studs where the plaster has pulled away, and we frame for a range hood that can actually move air on a 40 mph gust day.

The semi-arid climate matters too. Santa Ana gets hot, dry wind events with single-digit humidity, which means kitchens here benefit from externally vented hoods and careful attention to attic clearance around ducting. The clay-heavy soil in low-lying pockets also means foundation movement is normal, not exceptional. We see cracked tile and countertops that have separated from the wall as the slab shifts seasonally. A good Santa Ana kitchen remodel accounts for that movement with flexible caulk joints and cabinet shimming rather than fighting it.

Our Main Santa Ana Services

Most Santa Ana homeowners call us about one of two things: building an ADU on a lot that already has a rear-alley garage sitting in the way, or bringing a bathroom up to modern standard without blowing the budget on hidden plumbing surprises. Both jobs share the same older-home realities, but each has its own page for the details.

ADU Builders in Santa Ana

Santa Ana’s rear-alley detached garages are the defining variable in almost every ADU project here. In the 92701 and 92703 neighborhoods, the alley is often the only practical construction access, and the existing garage slab frequently sits exactly where the new unit wants to go. That means tear-out and a narrow-alley concrete pour before framing starts. We work across leading prefab manufacturers, including Abodu, Cover, and Dvele, and we match the build type to your lot, budget, and timeline rather than pushing one brand. The full picture, including permit realities and pricing, lives on ADU Builders in Santa Ana.

ADU Builders in Santa Ana

Bathroom Remodeling in Santa Ana

Bathrooms in Santa Ana’s older homes were built small and plumbed with galvanized steel supply lines that corrode from the inside out over 70 to 90 years. We open the wall expecting to replace the supply lines back to the main, and we plan the waterproofing around the reality that these stucco-over-wood-frame homes breathe differently than modern construction. A properly vented exhaust fan matters more here than in coastal Orange County, because a Santa Ana wind day will find every gap in a poorly sealed ceiling. For the full scope and cost breakdown, see Bathroom Remodeling in Santa Ana.

Bathroom Remodeling in Santa Ana
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What happens when you call

  1. 1
    A real person answersNo phone trees — you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Kitchen Remodeling in Santa Ana

A kitchen remodel in Santa Ana usually starts with a 70 to 100 year old room that was sized for a freestanding stove and a small icebox, not a 36-inch range, a dishwasher, and a French-door refrigerator. The fix is a full rework of the work triangle, new electrical service to handle modern appliance loads, and exterior-vented hood ducting that performs on hot, dry wind days. We handle the entire job, from demolition through finished cabinetry and countertops, under one contract with no handoff to a second contractor. Our Kitchen Remodeling work ties directly into the same standards we use on ADU interiors, which means the finish quality is consistent across every room we touch.

Full Kitchen Rework

Signs you need it

The current layout has the stove, sink, and refrigerator spread so far apart that cooking a simple meal means walking ten feet between each station, or the existing cabinets were built in place decades ago and cannot accept standard modern drawer slides.

What it costs in Santa Ana

A full kitchen rework in Santa Ana typically runs $15,000 to $30,000 depending on cabinet grade, countertop material, and how much electrical and plumbing rough-in has to be updated behind the walls.

How we do it

We strip the room to framing, rough in new electrical circuits and water lines, reinforce any studs damaged by past settling, then install prefinished cabinets, countertops, a properly vented hood, and finish with backsplash and flooring in one continuous sequence.

Galley Kitchen Update

Signs you need it

Your galley kitchen is functional but cramped, with dead corner cabinets that swallow storage space and a single overhead light that leaves the countertops in shadow.

What it costs in Santa Ana

A galley kitchen update in Santa Ana typically falls between $10,000 and $20,000 when the existing footprint stays and the work focuses on smarter storage, better lighting, and replacing worn surfaces.

How we do it

We keep the plumbing where it sits to control cost, pull out the old cabinet boxes, install new cabinetry with roll-out trays and lazy susans in the dead corners, add under-cabinet task lighting, and finish with a new countertop run and a vented hood that actually clears the air.

What Kitchen Remodeling Costs in Santa Ana

Item Typical range in Santa Ana
Full kitchen rework $15,000 – $30,000
Galley kitchen update $10,000 – $20,000
Countertop replacement only $3,000 – $7,000

What pushes a Santa Ana kitchen remodel toward the top of those ranges is the age of the home: knob-and-tube wiring replacement, galvanized supply line reroutes, and subfloor leveling after seventy years of slab movement all add scope. We give you a written line-item quote before work starts, and the price does not change mid-project unless you change the scope.

How long does a kitchen remodel take in Santa Ana?

Most kitchen remodels in Santa Ana take 4 to 8 weeks from demo to final walkthrough. Homes with significant framing correction or electrical service upgrades run toward the longer end. Call (877) 658-7475 for a timeline based on your specific home.

Will a kitchen remodel require moving gas or plumbing lines?

Often yes, especially in 1920s and 1930s homes where the original gas line feeds a single freestanding stove location. We plan relocation during the design phase so the work happens during rough-in, not as a surprise later. Estimates are free.

Brands We Service in Santa Ana

We install and service kitchens and ADU interiors using James Hardie fiber-cement exteriors where the exterior envelope is part of the job, and we match cabinetry and finish packages across Abodu, Cover, and Dvele prefab units when the kitchen sits inside a factory-built ADU. Parts for common cabinet hardware and sink fixtures are stocked locally, so most finish-stage adjustments take days, not weeks. See our brands for the full lineup.

Pricing for ADU Company in Santa Ana, CA

Service Typical range in Santa Ana
Full kitchen rework $15,000 – $30,000
Galley kitchen update $10,000 – $20,000
Countertop replacement only $3,000 – $7,000
Kitchen cabinet refacing $4,000 – $9,000
Kitchen island addition $5,000 – $12,000
Custom range hood installation $1,500 – $4,000
Under-cabinet lighting package $800 – $2,500

Santa Ana pricing gets pushed upward by the age of the mechanical systems hiding behind old plaster walls, and by the reality that many kitchens in the 92701 and 92703 grid still have original electrical panels that cannot handle a modern appliance load. Every quote we give is a written line-item price with no change orders unless you choose to expand the scope.

Neighborhoods We Serve in Santa Ana

We work throughout Santa Ana’s older core and the surrounding tracts. Each neighborhood has its own rhythm: the 1920s bungalows near downtown need different framing care than the 1950s and 1960s ranch homes further out, but the soil, the wind, and the aging mechanical systems are constants we plan for on every job.

  • French Park
  • Floral Park
  • Washington Square
  • Wilshire Square
  • Mabury Park

We schedule estimates across the full city every week, so most Santa Ana homeowners can get us on site within a few business days of calling.

Service Area – Cities Near Santa Ana

Casita ADU Builders covers Santa Ana and the surrounding Orange County cities. We also serve Tustin, CA, North Tustin, CA, Fountain Valley, CA, and Orange, CA. If you’re a few minutes outside the city line, call us and we’ll tell you straight whether we can get a crew to your street.

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

Ready to get started? Free estimates · Free written quotes response in Santa Ana
Call (877) 658-7475

What happens when you call

  1. 1
    A real person answersNo phone trees — talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Santa Ana Customers Say

★★★★★ 4.8 from 4+ reviews

"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."

— Robert Gallagher

"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."

— Aisha Prince

"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."

— Maria Martinez

How It Works in Santa Ana

Getting your adu handled is simple and fast.

1

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Tell us about your adu needs and we provide an upfront, transparent quote — no obligation, no hidden fees.

2

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A background-checked, certified technician arrives in Santa Ana — typically within 30–60 minutes, with parts stocked on the truck.

3

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