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 San Mateo
Most San Mateo homeowners call us after they’ve already gotten one bid that fell apart. The numbers didn’t hold, or the scope changed the moment a wall came down. Here’s what we’d tell you directly: a mid-range kitchen remodel in San Mateo runs $14,000 – $45,000, a bathroom $9,000 – $28,000, and a home addition $45,000 – $130,000. Those ranges hold when the contractor you’re working with is a true General Contractor, not a handyman or a trade crew juggling three jobs. As a General Contractor in San Mateo, we price so the number you sign is the number you pay, unless you approve something different in writing. Call (855) 901-7266 and we’ll walk your project and give you line-item numbers, not a ballpark.
Why San Mateo Construction Is San Mateo’s Preferred General Contractor Company
Let’s skip the adjectives. San Mateo homeowners call us because we show up when we say we will and we know what’s behind the walls here before we open them. Noel Carrington, who leads our team, has walked enough pre-war bungalows off North B Street and mid-century ranchers near Aragon to know what the drywall is hiding. That inspection-first habit is what keeps our quotes honest.
We’re not the cheapest bid in San Mateo, and we won’t pretend to be. We carry a portfolio of 50+ name-brand suppliers across roofing, windows, cabinetry, countertops, plumbing fixtures, hardscaping, and fencing, so your job isn’t limited to whatever a single supplier happens to have in stock. You get actual choices: Cambria or Caesarstone counters, GAF or CertainTeed roofing, PGT windows if coastal corrosion matters to you. That’s the difference between a general contractor who manages trades and one who manages your whole project from roofline to foundation.
Styles & brands we work with
Residential General Contractor in San Mateo
Residential General Contractor work in San Mateo means something specific: taking an older home built between the 1920s and 1970s, opening it up, and managing every trade under one General Contractor contract so the plumber, electrician, and framer aren’t pointing fingers at each other. When you pull a permit for a kitchen or bath remodel here, the city will flag what’s exposed: knob-and-tube wiring, a beam that’s undersized by modern code, or a shower pan that’s been leaking into the subfloor for a decade. We price for that reality upfront.
The Inspection-First Allowance
Before we finalize any San Mateo remodel quote, we walk the property and price an allowance for hidden conditions. That means if we find dry rot or cloth-wrapped wiring once walls are open, the money for the repair is already in the contract, not tacked on as a surprise. Noel’s rule is simple: every change order gets written, priced, and approved before our crew touches the additional work.
Whole-House Scope Under One Contract
Most San Mateo remodels cross systems. A kitchen gut might require a new electrical subpanel, a roof leak above the addition might show up while we’re framing. Because we run exterior and interior work under the same license, the same superintendent schedules the roofer, the electrician, and the cabinet installer. You answer one call, not five.
Hire a General Contractor in San Mateo
When you hire a General Contractor in San Mateo, you’re making a decision about how the project gets managed, not just who swings the hammer. We pull the permits, schedule the inspections, handle the subcontractors, and sign off on the material quality. For a full kitchen remodel you’re looking at $14,000 – $45,000. A primary bath addition runs $9,000 – $28,000. An ADU in a San Mateo backyard typically lands between $90,000 and $220,000 depending on site access and utility trenching.
What San Mateo Permits Actually Trigger
Once a permit is pulled and the wall is open, the city inspector can require updates to the entire affected system, not just the section you touched. If your 1940s bungalow still has the original fuse panel, a bath remodel can trigger a panel upgrade. We build those trigger points into the contract as allowances so they don’t land as change orders later.
The Written Change Order Habit
We don’t do verbal approvals. If a roofer finds sheathing rot under your old shake roof while we’re replacing windows on the same wall, you get a written scope and price before the work proceeds. That habit is why our San Mateo clients don’t end up with a final bill that looks nothing like the contract.
Trusted Brands We Service in San Mateo
Because we carry so many supplier relationships, a San Mateo project can pair a value-tier PGT window on the garage side with a high-end CGI impact window on the street-facing elevation, without changing contractors. For dedicated San Mateo ECO Window Systems service, we handle the full range under the same roof. We stock common replacement parts for the brands we install, so a warranty trim piece or a Boral siding board doesn’t mean a two-week wait. When you call us about a warranty issue, we know the product line, and we carry the relationship with the manufacturer. That turns into faster turnarounds for San Mateo homeowners.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in San Mateo Homes
- Unpermitted additions from the 1960s and 70s. A previous owner closed in a porch or converted a garage without a permit. When we open the wall, the framing and electrical often don’t meet current code, and bringing it up to standard can add material cost.
- Dry rot on north-facing walls and under old stucco. The coastal fog belt keeps moisture in exterior wood far longer than inland climates. Flashing failures around old windows and deck ledgers are the usual culprit, and the repair often extends into the framing.
- Rain delays from November through March. Exterior work in San Mateo slows during the wet season. If a project includes roofing, siding, or a room addition with a weather-exposed phase, we build a draw schedule that accounts for lost days, not one that pretends the sky cooperates.
- Expansive clay soil on hillside lots west of El Camino Real. Additions and ADUs on sloped lots routinely require pier foundations or engineered retaining walls. A flatlands contractor who quotes standard footings will get a rude awakening from the geotech report.
Pricing for General Contractor in San Mateo, CA
We publish actual ranges because we’re tired of seeing San Mateo homeowners get three bids that vary by $40,000 with no explanation. Here’s what we tell people to budget:
| Project | San Mateo Market Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
Where you land inside each range depends on what’s behind the drywall, what code upgrades the permit triggers, and which material tier you choose. We’ll show you Cambria next to Caesarstone and explain the price difference honestly. Call (855) 901-7266 for a free estimate with line items you can actually compare against other bids.
We Also Serve Cities Near San Mateo
Our General Contractor team works throughout the mid-Peninsula. We serve Highlands-Baywood Park and Hillsborough for hillside lot and retaining wall work, Foster City for flatlands additions with high water table considerations, and Belmont for mid-century remodels that mirror what we see in San Mateo. If you’re within a 15-minute drive, we’ll bring the same inspection-first approach.
Serving San Mateo, CA — Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
We stop work on that section, document what we found, and issue a written change order with photos and a specific price before anything else moves. If the contract already included an allowance for hidden conditions, the money comes from that allowance and doesn’t add to your total. Call (855) 901-7266 if you’re mid-project with another contractor and this didn’t happen.
We write the allowance into the contract before we start, based on what we expect in your home’s era and neighborhood. A 1940s bungalow gets a different allowance than a 1970s tract house. Any unused allowance is credited back to you at the end of the job.
Yes. Any bathroom remodel involving plumbing, electrical, or structural work requires a permit in San Mateo. Once the wall is open, the inspector can require upgrades to the affected systems, which commonly means replacing older wiring or an undersized vent line. We build those trigger points into the contract so they don’t blindside you.
We phase exterior work to start in spring or early summer when possible, and we build rain days into the schedule for any exterior phase that overlaps with winter. If a storm hits mid-exterior-work, we tarp and protect the site and adjust the draw schedule accordingly, so you’re not paying for decking that’s getting rained on.
A general contractor pulls permits, schedules inspections, manages subcontractors across trades, and carries the liability for the whole job. A handyman does punch-list work. If your San Mateo project involves plumbing, electrical, framing, or anything that requires a permit, hire the licensed general contractor. Call (855) 901-7266 and we’ll tell you honestly which category your project falls into.
One more thing from the field, because we think it explains how we work. We opened up a 1940s bungalow off North B Street in San Mateo to add a primary bath and found the subfloor had rot from a failed shower pan, plus cloth-wrapped wiring strung through the joists. Our crew stopped work, documented the issues, and issued a written change order to replace the subfloor and rewire the affected circuit: priced and approved before we touched anything else. The homeowner told us later that no other bid had mentioned an inspection-first allowance. That’s the standard we hold on every San Mateo job.
Call (855) 901-7266 to schedule your free estimate. We’ll walk the project, show you the numbers, and tell you what the permit will actually require.
Written by Noel Carrington, Owner at San Mateo Construction, serving San Mateo and the mid-Peninsula.