ADU Company in Tustin — 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 Tustin, CA

Kitchen remodeling in Tustin usually means working inside a 1950s or 1960s ranch home where the original footprint was built for a different era of cooking, storage, and family flow. We’re Classic ADU Builders, and we handle the full spectrum of ADU construction across Tustin, from detached units and garage conversions to interior build-outs that include kitchens and baths. Call (877) 265-5587 to talk through your project and get a free estimate.

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Why Tustin Homes Are Different

Tustin’s established neighborhoods, especially in 92780, are dominated by single-story ranch and tract homes from the 1950s through the 1970s. These houses came with detached two-car garages, shallow rear yards, and floor plans that assumed a family cooked in a closed-off kitchen and ate in a separate dining room. That changes how we approach nearly every ADU and kitchen job here. A garage conversion in Tustin isn’t just about drywall and flooring. The original garage slab often slopes for drainage, the electrical panel is usually a 100-amp unit that needs upgrading, and the roofline rarely has enough ceiling height for a comfortable living space without re-framing. On the newer 92782 side around Tustin Legacy, HOA and CC&R layers add a separate approval step that older tracts don’t have. Tustin is largely built-out, so almost every ADU here is a garage conversion or a second-story addition behind an existing home rather than a new detached unit on open land. The old Marine Corps Air Station redevelopment footprint means a lot of ADU work clusters in those older 1950s-to-1970s tracts where setbacks, alley access, and utility capacity are the real battles. Hot, dry summers and Santa Ana wind events also mean any new living space needs real cooling loads and shading, and winter rains put a premium on roof-to-wall flashing.

Our Main Tustin Services

These are the two services Tustin homeowners call us about most often. Each has its own dedicated Tustin page with deeper detail.

ADU Builders in Tustin

We build ADUs all over Tustin, from garage conversions in the older 92780 ranch tracts to detached units and second-story additions where the lot allows. In many of those older neighborhoods, garages were built as narrow single-car or alley-loaded stalls, so a straight conversion can come out too tight for a legal bedroom plus kitchen until a small bump-out or setback variance is worked in. We know when that variance is realistic and when it isn’t. Read the full breakdown at ADU Builders in Tustin.

ADU Builders in Tustin

Bathroom Remodeling in Tustin

Tustin’s older homes often have bathrooms that were never touched since the house was built: 5-foot tubs, single vanities, and walls that hide decades of moisture. Whether it’s a standalone remodel or the bathroom inside a new ADU, we handle the full job from rough-in to tile. Older Tustin slabs and cast-iron drain lines add a layer of care that tract-home remodelers often miss. Learn more at Bathroom Remodeling in Tustin.

Bathroom Remodeling in Tustin
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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 Tustin

Kitchen remodeling in Tustin almost always starts inside a 1950s-to-1970s ranch or tract home where the original kitchen was small, closed off, and built for a single cook. Those homes dominate the 92780 grid, and their kitchens were never designed for island seating, double ovens, or the way families actually live now. The second thing we see constantly is a lack of ventilation and cooling: Tustin’s hot inland summers and Santa Ana wind events make a poorly ventilated kitchen unbearable by July. Our kitchen work is full-service, from demolition to finished interiors, and we handle it as part of our broader Kitchen Remodeling work across Orange County.

Full Gut Kitchen Remodel

Signs you need it

The layout no longer works, the cabinets are original and failing, and you’re working around problems instead of fixing them.

What it costs in Tustin

In Tustin, a full gut kitchen remodel typically runs $55,000 to $95,000 depending on cabinet quality, layout changes, and structural surprises behind the walls.

How we do it

We strip the room to the studs, re-route plumbing and electrical to the new layout, replace subfloor where needed, install new cabinets and stone, and finish with a walk-through that catches details before you move back in.

Kitchen Island Addition

Signs you need it

Your Tustin kitchen has usable floor space but no work surface or seating, and the room feels like a hallway with appliances.

What it costs in Tustin

Adding a kitchen island with seating, plumbing, and electrical in a Tustin home typically costs $12,000 to $28,000 depending on size, stone choice, and whether the slab requires cutting for a sink or cooktop.

How we do it

We confirm floor structure under the intended island, saw-cut the slab for plumbing and electrical if the island includes a sink or cooktop, frame and finish the island, and tie it into the existing floor and cabinet layout so it reads as original.

What Kitchen Remodeling Costs in Tustin

Item Typical range in Tustin
Minor kitchen update $18,000 – $35,000
Full gut kitchen remodel $55,000 – $95,000
Kitchen island addition $12,000 – $28,000

What pushes price up in Tustin is the age of the original plumbing and electrical. A 1960s ranch kitchen in 92780 often hides cast-iron drain lines and cloth-wrapped wiring that no one discovers until the walls come open. We quote line-item prices and don’t change the number once work starts unless you change the scope.

How long does a kitchen remodel take in Tustin?

A full gut kitchen in Tustin typically takes 6 to 10 weeks from demo to final walk-through. Cabinet lead times and hidden structural repairs behind 1950s and 1960s walls are the two biggest variables.

Will my kitchen remodel require a permit in Tustin?

Yes, any kitchen remodel that moves plumbing, electrical, or walls requires a permit through the City of Tustin. We pull permits, schedule inspections, and keep the job moving through the process. Call (877) 265-5587 for a free estimate.

Brands We Service in Tustin

We work across the ADU and kitchen brands homeowners already research, including Mighty Buildings, Boxabl, and Plant Prefab, plus Tuff Shed conversions that turn an existing garage or backyard structure into finished living space. Parts and finishes for these systems are stocked through our local supply channels, which keeps lead times predictable. See our brands for the full range.

Pricing for ADU Company in Tustin, CA

Service Typical range in Tustin
Backyard guest house (studio) $95,000 – $160,000
One-bedroom ADU $130,000 – $210,000
Permitted garage conversion $85,000 – $145,000
Two-bedroom ADU $180,000 – $280,000
Attached addition ADU $165,000 – $250,000
Tuff Shed conversion $55,000 – $110,000
Kitchen remodel (minor update) $18,000 – $35,000
Kitchen remodel (full gut) $55,000 – $95,000
Bathroom remodel (tub/shower upgrade) $12,000 – $22,000
Bathroom remodel (full renovation) $20,000 – $38,000

In Tustin, the two biggest price movers are the condition of the original garage slab or foundation and the distance from the existing electrical panel to the new unit. Older 92780 homes often need panel upgrades and trenching that newer Tustin Legacy lots don’t. We provide written line-item quotes before work begins, and we don’t change the price unless you change the scope.

Neighborhoods We Serve in Tustin

We work across all three Tustin ZIP codes and the neighborhoods inside them. Our teams are typically already on the ground within a day or two for estimates, and we schedule work in phases so your project isn’t waiting on one trade.

  • Tustin Legacy
  • Old Town Tustin
  • Columbus Square
  • Laurelwood
  • Crawford Canyon

Service Area – Cities Near Tustin

Beyond Tustin, we serve the surrounding Orange County cities where ADU rules and housing stock differ. See our work in North Tustin, CA, Santa Ana, CA, Irvine, CA, and Orange, CA for local details on each.

Serving Tustin, CA — Our Local Coverage Area

We’re based in the Tustin 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 Tustin

Ready to get started? Free estimates · Free written quotes response in Tustin
Call (877) 265-5587

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 Tustin Customers Say

★★★★★ 4.8 from 4+ reviews

"Unit came out great and the tenant is happy. The timeline ran long, largely because of how slow the city was on plan check, though a couple of the delays were scheduling on their end."

— Marcy Miller

"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."

— Beatriz Morales

"The kitchenette layout he suggested made better use of the space than the one on our original sketch."

— Eric Tran

How It Works in Tustin

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 Tustin — 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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