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.
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.

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.

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.
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
We schedule estimates across Brea within one to two business days, including Blackstone, Olinda Ranch, and the Carbon Canyon Road corridor. Call (833) 467-4140 to grab a slot; we’ll confirm a time window by text.
We prepare the drawings and documentation your HOA’s architectural review committee needs. Brea enforces both city zoning and HOA design rules, and we’ve submitted to Blackstone and Olinda Ranch committees many times. We can’t guarantee HOA sign-off, but we know what they ask for.
Yes. We serve 92821, 92822, and 92823, including the hillside lots north of Lambert and the older tracts near downtown. If you’re unsure whether your property’s in our area, call (833) 467-4140 and we’ll verify it on the spot.
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 Brea Customers Say
"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