ADU Company in Santa Ana — Plans, Permits & Build, One Fixed Price

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 usually runs $18,000 – $52,000 for a full renovation, and the homes here make that number move in predictable ways: 1920s Spanish Revival bungalows hide knob-and-tube wiring and settled floors, while 1960s tract stucco homes carry load-bearing walls that aren’t optional to remove. Westminster ADU Builders has served Santa Ana since 2016, and we plan every kitchen around the house it’s going into, not a catalog photo. Call (833) 620-3521 if you want a line-item estimate in the next few days.

Call (833) 620-3521

Why Santa Ana Homes Are Different

Santa Ana’s housing stock splits into two distinct eras. The historic core, ZIPs 92701 and parts of 92703, is packed with 1920s – 1950s Spanish Revival and Craftsman bungalows on narrow lots, many with detached single-car garages facing rear alleys. Those homes have character, but their kitchens were built for a family that stored food in an icebox and cooked on a 30-inch gas range. The south and east stretches toward 92704 hold 1950s and 60s tract stucco homes, where the framing is predictable but the original kitchens are cramped, dark, and closed off from the rest of the house. Climate plays a role too. Santa Ana’s semi-arid weather and the dry Santa Ana winds mean heat builds up fast in west-facing kitchens, so we plan window placement, ventilation, and insulation accordingly. The city’s General Plan actively encourages accessory dwelling units, which means a lot of Santa Ana homeowners are thinking about their kitchen remodel and a backyard ADU at the same time, often with the same budget conversation.

Our Main Santa Ana Services

Santa Ana homeowners call us most about two projects: building an ADU on a tight rear lot and updating a bathroom inside a 1930s bungalow or 1960s ranch. Both jobs in Santa Ana demand someone who knows how older homes here are framed, wired, and setback from the property line.

ADU Builders in Santa Ana

Santa Ana is one of the few Orange County cities whose zoning actively encourages ADUs as a housing strategy, which means dense R-1/R-2 lots in 92701 and 92703 are stacked with garage conversions and two-story detached units on 40-foot-wide parcels. The real work on these jobs is site planning: alley access, parking, setbacks, and fire separation along shared property lines. We build both prefab and traditional site-built ADUs in Santa Ana, and the right path depends on your lot. Read the full breakdown on our ADU Builders in Santa Ana page.

ADU Builders in Santa Ana

Bathroom Remodeling in Santa Ana

Bathrooms in Santa Ana’s older homes run small, often 35 to 50 square feet, and they were built before modern exhaust fan code requirements. That means moisture control, subfloor repair, and layout work are the real scope, not just swapping fixtures. We handle the plumbing, waterproofing, and finish work in-house. If you’re planning a bathroom update in a 1920s bungalow or a 1960s ranch, the details are on our Bathroom Remodeling in Santa Ana page.

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

Kitchen remodeling in Santa Ana means working around two housing eras: the 1920s – 1950s bungalows in 92701 and 92703 with their settled pier-and-beam floors and outdated electrical, and the 1960s tract stucco homes where kitchens are closed off and starved for light. Santa Ana’s hot, dry wind days push cooling loads in rooms with old single-pane windows, so insulation, ventilation, and shading become part of the kitchen plan, not an afterthought. If you’re still deciding between updating your current kitchen and building an ADU with a new one, start with our Kitchen Remodeling overview.

Cabinet and Countertop Replacement

Signs you need it

Doors that no longer close square, particleboard boxes swelling near the sink, and laminate counters with burns or peeling edges mean the cabinet system has hit the end of its functional life.

What it costs in Santa Ana

Cabinet and countertop replacement in Santa Ana typically runs $12,000 – $28,000 depending on cabinet construction, counter material, and how much the old kitchen needs to be prepped before new boxes go in.

How we do it

We remove the old cabinets and counters, fix any framing or drywall issues behind them, install the new cabinet boxes and doors, template and set the counters, then reconnect plumbing and appliances to the new layout.

Full Kitchen Renovation

Signs you need it

If the layout forces you to work around the kitchen instead of in it, the electrical can’t support modern appliances, or the floor sags at the doorway, the kitchen needs more than new surfaces.

What it costs in Santa Ana

A full kitchen renovation in Santa Ana lands between $30,000 and $52,000 when the job includes new cabinets, counters, flooring, lighting, and some plumbing or electrical relocation.

How we do it

We map the new layout against the existing framing and systems, pull permits, open the walls to update wiring and plumbing, then rebuild the kitchen in sequence: framing, rough-in, drywall, flooring, cabinets, counters, tile, and finish electric.

What Kitchen Remodeling Costs in Santa Ana

Item Typical range in Santa Ana
Cabinet and countertop replacement $12,000 – $28,000
Full kitchen renovation $30,000 – $52,000
Kitchen update with layout changes $45,000 – $55,000

Can you match the style of a 1920s Santa Ana bungalow kitchen?

Yes. For Spanish Revival and Craftsman homes in 92701 and 92703, we source inset cabinet doors, period-appropriate tile, and unlacquered brass or oil-rubbed bronze hardware. The goal is a kitchen that feels original, not themed. Call (833) 620-3521 to talk through the details.

Does a Santa Ana kitchen remodel require a permit?

Most full kitchen renovations in Santa Ana do require a permit, especially when the job moves plumbing, electrical, or a wall. We pull the permits, schedule inspections, and close the job with a signed final. Call (833) 620-3521 for a free estimate on your kitchen.

Brands We Service in Santa Ana

We work directly with prefab ADU brands including Cover, Dvele, and Boxabl for Santa Ana projects where factory-built speed and precision fit the lot. Our team knows each brand’s engineering, delivery constraints, and trim-out process. Learn more on our brands page.

Pricing for ADU Company in Santa Ana, CA

Service Typical range in Santa Ana
Cabinet and countertop replacement $12,000 – $28,000
Full kitchen renovation $30,000 – $52,000
Kitchen update with layout changes $45,000 – $55,000
Prefab ADU (site work and install) $180,000 – $280,000
Site-built ADU (standard finish) $250,000 – $380,000
Garage conversion ADU $120,000 – $190,000
Bathroom remodel (mid-range) $18,000 – $35,000
Bathroom remodel (upmarket) $35,000 – $60,000

What pushes a Santa Ana kitchen remodel price up is the age of the house: opening walls in a 1930s bungalow almost always reveals wiring or plumbing that has to be brought to current code. On ADUs, the cost driver is site work, especially on alley-served lots where access is tight and foundations need deeper engineering. Every estimate we write is line-item, fixed-price, and covers the full scope so the number you sign is the number you pay.

Neighborhoods We Serve in Santa Ana

We work across Santa Ana, from the historic bungalow rows near downtown to the tract stucco neighborhoods in the south and east. Most of our current jobs are in these areas:

  • French Park
  • Floral Park
  • Wilshire Square
  • Morrison Park
  • Washington Square

We’re typically in Santa Ana two to three days a week across active projects, so scheduling an estimate anywhere in the city rarely takes more than a few business days.

Service Area – Cities Near Santa Ana

Westminster ADU Builders serves Santa Ana and the surrounding Orange County cities. We also work regularly in Tustin, CA, North Tustin, CA, Fountain Valley, CA, and Orange, CA. If you’re right on the city line, tell us when you call and we’ll confirm coverage for 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 on-site estimates response in Santa Ana
Call (833) 620-3521

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

★★★★★ 5.0 from 4+ reviews

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

— Daniel Norris

"Sound insulation between the unit and the main house is better than I expected. You genuinely cannot hear the tenant."

— Farah Hassan

"He gave us a realistic rental number for the finished unit rather than the optimistic one, and it's renting for about what he said."

— Erin Quinn

How It Works in Santa Ana

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

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

2

Licensed Technician Dispatched

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

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

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