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
Finding a general contractor in San Mateo who understands the difference between a flat-lot remodel in the 94401 flats and an acreage build in the 94402 western hills is harder than it should be. Most GCs treat every San Mateo job the same way, and that’s where budgets blow up and schedules slip. We’re Garden Grove Contractors, and we’ve spent enough time on San Mateo parcels, from Hayward Park to the Hillsborough-adjacent slopes, to know what changes when the ground under the job changes. We manage the full scope, interiors and exteriors, from countertops to roofline, under one contract. Call (877) 373-9230 to talk through your project with Noel Cardenas directly.
Why Garden Grove Contractors Is San Mateo’s Preferred General Contractor Company
San Mateo homeowners call us because we don’t flinch at the parts of a job that make other contractors quietly back away: hillside geotech review, county-level permitting on acreage parcels, septic and well setback compliance, engineered drainage plans. Those aren’t add-ons to us. They’re the job. Our General Contractor team has walked San Mateo’s permit counter more times than we can count, and we know which planner asks for which soil narrative before the first shovel turns.
Our San Mateo customers tend to be research-driven. They’ve read the code sections. They know what a rear-yard setback is, and they’ve already priced Cambria quartz at two showrooms. That’s the client we work best with. We bring the material knowledge to match: James Hardie siding authorization, GAF-certified roofing, plumbing fixture sourcing across Kohler, Moen, and Toto. When a San Mateo homeowner in Baywood Knolls wants a full kitchen remodel and a second-story addition, we spec the materials and sequence the inspections so the whole thing moves without a stop-work order sitting on the door. We’ve built a strong local reputation in San Mateo, from the Aragon district to the Shoreview edge, and we back every job with written line-item quotes and a workmanship warranty.
Styles & brands we work with
- Kitchen remodeling
- Bathroom remodeling
- Home additions & ADU
- Roofing
- Windows & doors
- Driveway & pavers
- Fence
Construction Company in San Mateo
As a construction company serving San Mateo, we handle the structural and site work that turns a mid-century ranch into a home that works for the next forty years: foundations, framing, second-story pop-ups, rear extensions, outbuildings, and detached ADUs. On San Mateo’s western hill parcels, this often starts with something a flat-lot build never touches: a geotechnical report and a planning-level review before anyone pulls a grading permit. The soils on those slopes toward Hillsborough are expansive, and the county wants proof the foundation won’t crack before they’ll stamp the plans. A home addition in San Mateo runs $45,000 – $130,000, and a detached ADU typically lands between $90,000 and $220,000 depending on slope, access, and utility runs.
Site Prep and Geotech on Hillside Parcels
On a 1.2-acre parcel off Parrott Drive in the 94402 hills, we replaced a failing septic system and graded for a detached ADU. The county required a geotech report and an engineered drainage plan before we could pull permits, and that added three weeks to the schedule. We used a Kohler well pump and specified a load-bearing ridge beam for the shop’s clear span, then walked the client through a draw schedule tied to inspection sign-off milestones.
Foundations, Grading, and Drainage
San Mateo’s wet winters mean any cut or fill on a sloped lot lives or dies by its drainage plan. We scope swales, retaining walls, and foundation waterproofing before the quote, not after the first storm. It costs a little more up front and saves a stop-work order later.
Remodeling Contractor in San Mateo
As a remodeling contractor working across San Mateo, we’re usually called in when a 1940s or 1960s ranch is ready for its second life: kitchens and baths on the inside, siding and windows on the outside, often sequenced so the family can stay in the house through part of the work. A kitchen remodel in San Mateo typically runs $14,000 – $45,000, a small kitchen $9,000 – $20,000. Bathrooms land between $9,000 and $28,000 for a full remodel, $5,000 – $12,000 for a small one. Material choice moves the needle, and we guide that conversation.
Interior Scope and Material Selection
We bring countertop and surface sourcing across Caesarstone, Silestone, and Cambria, plus cabinet partnerships including KraftMaid, so a San Mateo homeowner isn’t stuck choosing from whatever one supplier happens to stock. We spec the right material for the project, not the easiest one to install.
Exterior Envelope Upgrades
Roofing, windows, siding, and drainage work on San Mateo homes often needs to happen before interior finishes, and we coordinate it under the same contract. Roof replacement here runs $8,000 – $20,000, window replacement $4,500 – $15,000. James Hardie siding is our default recommendation for the peninsula’s damp winter months.
Trusted Brands We Service in San Mateo
We don’t install whatever a supplier’s warehouse is overstocked on. We maintain curated partnerships with 50+ nationally recognized manufacturers across six trade categories, and that matters in San Mateo where the housing stock ranges from 1940s tract homes to 94402 custom builds. For exterior doors and impact-rated products, we source through CWS and CGI when the job demands coastal-grade wind ratings. For fencing, roofing, and hardscape, we pull from GAF, CertainTeed, Owens Corning, Belgard, and Techo-Bloc. One contractor, one contract, and the material spec is ours to own.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in San Mateo Homes
- Skipping the geotechnical report on sloped acreage. Expansive soils under San Mateo’s western hills shift with winter moisture, and foundations poured without a soils report crack within a few seasons. The county catches it at inspection, and the fix costs more than the report ever did.
- Underestimating haul distances and equipment access. Narrow, unpaved roads in the 94402 hills add crane fees, extra gravel runs, and sometimes a second concrete pump. We price access into the quote instead of surprising you with a change order.
- Ignoring county septic and well setback rules. Outbuildings and detached ADUs on acreage parcels have minimum distances from leach fields and well heads. Place a shop too close and the county issues a stop-work order until the design moves.
- Framing a second-story pop-up without planning for lot coverage limits. San Mateo’s hillside parcels carry tighter coverage and setback calculations than the flats. We run the math before the architect gets too far into drawings, which saves rework and redesign fees.
Pricing for General Contractor in San Mateo, CA
San Mateo acreage work costs more than flat-lot work because it involves more than labor and materials. Geotech reports, engineered drainage, septic and well coordination, and access logistics all enter the number before construction starts. Here are honest ranges for the project types we scope most often across San Mateo’s 94401, 94402, 94404, and 94497 zip codes:
| Project Type | San Mateo Price Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number: slope and soil conditions, permit path (city versus county), distance from utilities, and whether we’re working on the flats or in the hills. We provide written line-item quotes so you see exactly where the money goes. Call (877) 373-9230 for a free estimate on your San Mateo project.
We Also Serve Cities Near San Mateo
Our work takes us throughout the peninsula, including Highlands-Baywood Park, Foster City, Belmont, and Hillsborough. If your property sits on the San Mateo edge or in a neighboring community, our general contractor team covers the full corridor. Call us and we’ll let you know when we can get on site.
Serving San Mateo, CA - Our Local Coverage Area
We serve San Mateo and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs About General Contractor in San Mateo
San Mateo’s western hills fall under county jurisdiction for grading, septic, and well work, so projects on acreage parcels there go through San Mateo County planning and environmental health, not the city building department. That’s a different permit path with geotech review, drainage reports, and often a soils narrative before foundation plans are approved. Call (877) 373-9230 and we can tell you which jurisdiction your parcel falls under.
Septic systems and wells have minimum setback distances from any structure, and on San Mateo acreage those distances are county-mandated. A detached ADU or shop placed inside the setback triggers a stop-work order and a redesign, which can cost thousands and delay the project by months. We map the setbacks before we quote placement.
The biggest cost driver is usually grading and foundation work tied to the geotechnical report. On a sloped 94402 parcel, you’re paying for engineered retaining, drainage, and possibly pier or caisson foundations, and that can add $25,000 – $60,000 to the build before framing starts. Access for concrete trucks and cranes adds more if the road is narrow. Call (877) 373-9230 for an exact quote on your lot.
Yes, if your San Mateo ranch sits on the western hills toward Hillsborough or anywhere with slope, the county will typically require a soils report before approving a second-story addition. The report tells the engineer whether the existing foundation can carry the new load or needs retrofit work, and that answer changes the price and the schedule.
We plan access before we bid. That means measuring the road width, checking for low branches and tight turns, and deciding whether the job needs a smaller concrete pump, a different crane, or staged gravel deliveries. We build those logistics into the quote so the project doesn’t stop mid-pour or surprise you with an access change order.
Written by Noel Cardenas, Owner at Garden Grove Contractors, serving San Mateo and the greater Bay Area peninsula.