Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Placentia
If you’re planning a remodel, addition, or ADU in Placentia, you need a general contractor who understands how this city actually works. Most homes here sit on tight mid-century lots in 92870 and 92871, and nearly every project is infill work, not new construction. That changes everything about how a job gets priced, permitted, and built. We’re San Mateo Construction, and General Contractor work in Placentia is what our team handles every week. Call (855) 901-7266 for a free estimate, and we’ll walk you through what’s realistic for your street, your lot, and your budget.
Why San Mateo Construction Is Placentia’s Preferred General Contractor Company
Placentia homeowners keep calling us back because we treat the permit counter as part of the job, not an afterthought. General Contractor in Placentia work runs through a single City of Placentia Building & Safety pipeline, which means plan-check familiarity with 92870 and 92871 zoning actually matters. We’ve been through that counter enough times to know what triggers corrections and what sails through. Our clients in the neighborhoods around Golden Ave, Alta Vista, and near Valencia High School consistently tell us the same thing: we showed up when we said we would, we wrote down every change before touching it, and inspections passed without drama. Noel Carrington, who leads our team, insists on that standard on every single Placentia job. One contract, one accountable team, from roofline to foundation.
Styles & brands we work with
Construction Company in Placentia
A Placentia PGT service like ours has to be built for infill work. This city is fully built out, so what we do here is open up older homes, fix what’s hidden, and add square footage without crossing the lot-coverage line. A typical Placentia room addition runs $45,000 to $130,000, and a garage conversion runs $30,000 to $80,000. Those numbers include the work Placentia inspectors actually require once walls are open: updated electrical to current code, corrected framing, and waterproofing that holds up to dry inland heat and Santa Ana winds. We plan around Placentia’s permit process from day one, and we write allowances into the contract so the quote moves for a reason you can see, in writing, before we proceed.
Additions That Clear Placentia Zoning First
Lot coverage, setbacks, and parking rules on Placentia’s compact mid-century lots decide what’s buildable before square footage ever gets discussed. We check those against your parcel before you spend a dollar on design. That’s how we keep a second-story addition or room addition from dying at plan check.
Garage-to-ADU Conversions
Converting a garage in 92870 or 92871 isn’t the same as building one in a newer subdivision. The original slab may be thin, the roof structure may be undersized for living space, and the electrical panel is almost always too small. We price those corrections upfront and pull permits through the City of Placentia before the first day of demo.
Remodeling Contractor in Placentia
Hiring a remodeling contractor in Placentia usually means taking a 1950s or 1960s tract home down to the studs in at least one room. A full kitchen remodel here runs $14,000 to $45,000, and a bathroom remodel runs $9,000 to $28,000. The range exists because some Placentia homes still have cloth-wrapped wiring, cast-iron or early copper plumbing, and galvanized steel drain lines once you open the walls. We don’t quote off original drawings and hope for the best. We open, we inspect, we write up any framing, electrical, or plumbing corrections as a priced change order, and we get your signature before our crew moves forward. That’s the difference between a clean remodel and one that stalls at rough-in inspection.
Kitchen and Bath Remodels With Real Allowances
We write allowances for the things Placentia remodels predictably uncover: subfloor repair from old bathroom leaks, re-framing for undersized headers, and panel upgrades when new appliance circuits demand it. You’ll see those numbers in your contract before demo starts. No one gets surprised after drywall is up except by a number they already approved.
Whole-Home Work Under One Contract
The same team that re-roofs a Placentia home with GAF or Owens Corning can also rebuild the kitchen with KraftMaid cabinetry and Cambria or Caesarstone counters. One contractor, every system, from exterior to interior. That’s what single-source accountability means on a mid-century lot where every trade has to fit into the same tight schedule.
Trusted Brands We Service in Placentia
We carry direct access to over 50 name-brand supplier lines, and for Placentia homes we lean on materials that handle this climate well. PGT impact-rated windows hold up against Santa Ana wind gusts and cut heat gain in summer. Boral and Tamko roofing products give us solid options for the re-roofs that so many mid-century Placentia homes need. We help you choose from curated name-brand options, not whatever happens to be sitting in a supply yard. Because we’ve worked with these manufacturers for years, we can get materials to Placentia fast and catch product-specific installation issues before they waste your time.
See the difference
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AfterCommon General Contractor Problems We See in Placentia Homes
- Cloth-wrapped and undersized wiring. Homes built before 1960 around central Placentia often still have original cloth-insulated wire. Opening walls for a remodel means bringing those circuits up to current code before an inspector will sign off.
- Undersized framing and failed headers. We regularly find half-undersized headers over windows and door openings on 1950s tract homes. Adding square footage means correcting the framing the addition ties into, not just the new wall.
- Galvanized and early copper plumbing. Original supply and drain lines in 92870 and 92871 homes are usually past their reasonable lifespan. We price repipes and drain replacements as permitted, visible scope when a gut remodel exposes them.
- Failed waterproofing from decades of dry heat. Placentia’s summer heat and Santa Ana winds dry out old shower pans, window flashing, and stucco seals. Water damage hides behind tile and drywall, which is why we pull permits and open what needs to be opened before quoting final numbers.
Pricing for General Contractor in Placentia, CA
Here’s what Placentia homeowners can expect to budget for the most common projects we handle. These are market-calibrated ranges for this city, not national averages. What moves you within these ranges is the condition of the hidden systems in your home, the age of the original structure, and how much of the lot’s allowable coverage your project uses.
| Project | Placentia Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
These ranges assume you’re working with a licensed general contractor who pulls permits through the City of Placentia and passes inspection. If a quote comes in far below these numbers, ask what’s been left out. We write our quotes as line items, with allowances for what walls might reveal, so you’re comparing real scope to real scope. Call (855) 901-7266 for a free, itemized estimate on your Placentia project.
We Also Serve Cities Near Placentia
We work throughout north Orange County. If you’re in Placentia or nearby, our team covers Brea, Anaheim, Fullerton, and Yorba Linda too. Same single-contract accountability, same brand access, same permit-first approach. Call (855) 901-7266 and we’ll tell you what’s realistic for your house and your street.
Serving Placentia, CA — Our Local Coverage Area
We’re based in the Placentia 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 General Contractor in Placentia
Because most Placentia homes are 60 to 70 years old, and what’s inside the walls is rarely what the original drawings show. Cloth-wrapped wiring, undersized headers, old galvanized plumbing, and hidden water damage are common in 92870 and 92871. The right way to handle this is to write specific allowances into the contract before demo, then present any actual finding as a priced change order for your written approval before work proceeds. An honest Placentia general contractor will not quote a mid-century gut remodel as a fixed, no-surprises number. Call (855) 901-7266 and we’ll show you what a properly built allowance schedule looks like.
Yes. All structural work, additions, and ADU construction in Placentia requires permits through the City of Placentia Building & Safety Department. This includes garage conversions, second-story additions, and any change to the building envelope or electrical, plumbing, or mechanical systems. Plan check and inspection sign-off are part of the job. Working without a permit puts the liability on you and creates problems when you eventually sell. We manage the entire permit process for you, from submittal through final inspection. Call (855) 901-7266 to discuss your specific project.
On Placentia’s compact mid-century lots, zoning rules decide what’s buildable before square footage does. Lot coverage, side and rear setbacks, and parking requirements are the three constraints that most often shrink a planned addition or kill a garage conversion. California ADU law adds another layer for accessory dwelling units. The practical move is to have a contractor check your parcel against Placentia’s current zoning before you invest in design. That’s a step we take on every Placentia job, free, before you commit to anything. Call (855) 901-7266 and we’ll run the basic lot-coverage math for you.
In most cases, yes. A garage conversion in Placentia typically runs $30,000 to $80,000, and the wide range reflects what we usually find: a thin original slab that needs reinforcement, roof framing that wasn’t built for living-space loads, and an electrical panel too small for a separate unit. You’ll also need to clear Placentia’s setback and parking rules, and California ADU law may require one off-street parking space if your lot doesn’t qualify for an exemption. There’s also no corridor of land inside that meets current zoning because in Placentia the original lot lines on those older neighborhoods are denser than anything on the new-construction market. Call (855) 901-7266 and we’ll tell you what your specific garage can become.
Everything from structural demo through final paint, under one contract. That includes the framing corrections Placentia inspectors require when old headers are exposed, the plumbing repipes for galvanized or early-copper supply lines, the electrical upgrades for panels that can’t support modern loads, and the waterproofing that keeps a job from failing two years later. We also manage scheduling, material procurement, and every subcontractor, and we write your change orders for your approval before any hidden scope gets touched. You never chase three different trades. One contractor, every system. Call (855) 901-7266 for a free estimate.
Written by Noel Carrington, Owner at San Mateo Construction, serving Placentia and all of Orange County.