ADU Company in Brea — One Fixed Price, Permits Handled

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 Brea, CA

Kitchen remodeling in Brea usually means reworking a 1960s tract home kitchen near downtown or updating a 1990s stucco home in Blackstone or Olinda Ranch. We handle both. The 57/60 corridor and Carbon Canyon fire zone shape how we plan ventilation, appliance placement, and material choices on the north side. Call (833) 467-4140 to talk through your kitchen, or an ADU, or a bathroom – we do all three under one contract.

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Why Brea Homes Are Different

Brea sits where three housing eras collide. The 92821 core and streets near downtown hold single-story 1960s and 70s tracts, many with detached rear garages that convert cleanly into ADUs. Then you have the 1990s-2000s planned communities – Blackstone, Olinda Ranch, the hillside pockets off Lambert – where HOAs and CC&Rs add architectural review on top of city permitting. And the north edge runs into the Puente Hills foothills, where sloping lots and the Carbon Canyon wildland-urban interface trigger drainage, retaining wall, and fire-hardening requirements that flatland cities like Fullerton rarely see. A Brea project often has two approval tracks: the city’s ADU ordinance and the HOA’s design committee. We’re used to running both at once.

Our Main Brea Services

Most Brea homeowners call us for one of two things: adding an ADU to a lot that can support one, or remodeling the bathroom in a house that’s been aging since Nixon was in office. Here’s how each works here.

ADU Builders in Brea

Brea lots vary enough that the right ADU answer changes street by street. A detached garage off a 1960s tract home in 92821 might convert to a Tuff Shed-based studio. A Blackstone hillside lot with tight setbacks might need a compact prefab from Boxabl or Mighty Buildings. We work across all the major manufacturers and traditional framing, so you compare options against your actual lot, not a sales script. ADU Builders in Brea covers the full process from feasibility to final inspection.

ADU Builders in Brea

Bathroom Remodeling in Brea

Older Brea homes carry original galley bathrooms with 60-amp panels and cast-iron drain lines. Remodeling here means planning for panel capacity, venting through stucco or wood siding, and waterproofing for Santa Ana heat swings. We do the demolition, plumbing, tile, and fixtures in-house. Bathroom Remodeling in Brea has the full breakdown of scope and finishes.

Bathroom Remodeling in Brea
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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 Brea

Kitchen remodeling in Brea usually means opening up a closed-off 1960s galley near downtown or reworking a 1990s builder kitchen in a stucco tract home. The hot inland summers and Santa Ana winds push us toward high-CFM ventilation and heat-tolerant finishes, especially north of Lambert. We plan around your existing electrical panel and slab or raised foundation. This is our most-requested service – see Kitchen Remodeling for the full scope.

Galley Kitchen Opening

Signs you need it

The original kitchen is closed off from the dining and living areas, and cooking for more than two people feels cramped.

What it costs in Brea

Removing a non-load-bearing wall, relocating plumbing for a sink or dishwasher, and patching ceiling drywall typically runs $12,000 – $25,000 depending on what’s inside the wall.

How we do it

We check the wall for load, reroute any plumbing or wiring, install a flush beam if needed, and patch the ceiling and floor so the opening looks original.

Full Kitchen Replacement

Signs you need it

Cabinets are delaminating, drawers stick, the layout doesn’t work, and the appliances predate current energy standards.

What it costs in Brea

A full tear-out and rebuild with new cabinets, countertops, flooring, and appliances usually lands between $35,000 and $75,000 in Brea, with upper-end homes in Blackstone pushing toward $90,000.

How we do it

We demo to studs, update electrical and plumbing, install cabinets and counters, tile or floor, hang the ventilation, and finish with paint and trim.

What Kitchen Remodeling Costs in Brea

Item Typical range in Brea
Galley kitchen opening $12,000 – $25,000
Full kitchen replacement $35,000 – $75,000
Upper-end remodel (Blackstone, Olinda Ranch) $75,000 – $90,000

Slab foundations and older copper supply lines add cost. HOA-owned homes with stucco exteriors may need architectural review before window or vent changes.

How long does a kitchen remodel take in Brea?

Most Brea kitchens take 6 to 10 weeks from demo to final walkthrough. HOA review can add two to four weeks at the front end, so start the approval paperwork before you pick finishes.

Will the price change once work starts?

Only if we open a wall and find something the previous remodel hid – rotted framing, unpermitted wiring, or corroded drain lines. We walk you through what we find and get sign-off before adding a dollar. Call (833) 467-4140 for an exact quote.

Brands We Service in Brea

We install and finish kitchens and ADUs built around Mighty Buildings, Boxabl, and Plant Prefab systems, and we convert Tuff Shed shells regularly for Brea homeowners. Most parts are available within a week through our local suppliers. Our brands page lists the full lineup.

Pricing for ADU Company in Brea, CA

Service Typical range in Brea
Galley kitchen opening $12,000 – $25,000
Full kitchen replacement $35,000 – $75,000
Upper-end kitchen remodel $75,000 – $90,000
Tuff Shed studio conversion $60,000 – $120,000
Detached one-bedroom ADU (prefab) $150,000 – $250,000
Detached one-bedroom ADU (site-built) $200,000 – $300,000
Above-garage ADU $180,000 – $280,000
Two-bedroom ADU (prefab or site-built) $250,000 – $400,000
Garage conversion ADU $120,000 – $200,000
Bathroom remodel $15,000 – $45,000

Sloping lots on Brea’s north side push grading and retaining costs up. HOA-mandated exterior finishes can also add a few thousand. We quote a fixed price upfront and don’t change it unless you change the scope.

Neighborhoods We Serve in Brea

We work across all three Brea ZIP codes – 92821, 92822, and 92823. Typical response for an estimate is one to two business days anywhere in the city.

  • Downtown and 92821 core
  • Blackstone
  • Olinda Ranch
  • Brea Hills / Lambert corridor
  • Carbon Canyon Road area

Service Area – Cities Near Brea

Manzanita ADU Builders serves Brea and the surrounding north Orange County cities. We regularly work in Placentia, CA, Fullerton, CA, Yorba Linda, CA, and La Habra, CA. If you’re just over the city line, call us – our service area covers all of these communities.

Serving Brea, CA — Our Local Coverage Area

We’re based in the Brea 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 Brea

Ready to get started? Free estimates · Free written quotes response in Brea
Call (833) 467-4140

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 Brea Customers Say

★★★★★ 4.8 from 4+ reviews

"Every invoice was tied to a completed milestone, so I always knew what I was paying for."

— Angela Chen

"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."

— Jason Parker

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

— Javier Morales

How It Works in Brea

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 Brea — 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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Areas We Serve
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