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 Gilroy
Finding a General Contractor who understands acreage, ag-adjacent lots, and county permitting is different in Gilroy than it is over the hill in San Jose. We’re San Mateo Construction, led by Noel Carrington, and we’ve built and remodeled across Gilroy’s 95020 and 95021 zip codes long enough to know that a property off Hecker Pass Road has nothing in common with a tract home near Christmas Hill Park. You need a contractor who shows up when scheduled, quotes real numbers, and manages every trade from roofline to foundation under one contract. That’s us. Call (855) 901-7266 for a free estimate.
Why San Mateo Construction Is Gilroy’s Preferred General Contractor Company
Gilroy homeowners call us for two kinds of work: remodels inside the city limits and larger builds on unincorporated parcels where county rules run the show. We handle both without blinking. Noel Carrington built San Mateo Construction around a simple idea: one accountable team for every system in the house, not a rotating cast of subs you never see twice. When we re-roof a Gilroy home with GAF or Owens Corning shingles, the same contract covers the kitchen remodel, the window replacement, and the paver driveway. That’s rare in this market.
Our reputation in Gilroy rests on showing up ready. We know the inspection rhythms in Santa Clara County, we know which suppliers stock what in South County, and we don’t send a different crew every week. Homeowners from downtown Gilroy to the newer subdivisions east of 101 come back to us because we quote a fixed price, pull permits, and finish the job. No change orders because someone forgot a setback. No surprise invoices in month three.
Styles & brands we work with
Remodeling Contractor in Gilroy
When a Gilroy homeowner comes to us as a Remodeling Contractor, the scope usually touches more than one room. A kitchen remodel in a 1990s tract home off Santa Teresa Boulevard often means pulling up tile, reworking a load-bearing header, and upgrading plumbing rough-ins before the cabinets ever arrive. That’s the kind of project where material selection matters as much as framing. We help you choose specific brands, not whatever’s on the shelf: KraftMaid or Wellborn cabinets, Cambria or Silestone countertops, Kohler or Moen fixtures. You get a curated set of options across every budget tier, and we install all of it.
Kitchen and Interior Work
Gilroy kitchens in the downtown core often sit in homes built before 1970, with smaller footprints and plaster walls that hide surprises. We quote those carefully. A full kitchen remodel in Gilroy typically runs $14,000 to $45,000, with smaller galley kitchens starting around $9,000. Cabinet installation alone lands at $4,000 to $13,000, and new countertops run $2,000 to $6,500. We’ll give you a line-item estimate before any demo starts.
Bathroom and Shower Upgrades
Bathrooms in Gilroy’s production-era homes were built fast in the 1990s and 2000s, and many need shower pans re-done and waterproofing brought up to current code. A full bathroom remodel here runs $9,000 to $28,000, while a small bathroom or a tub-to-shower conversion starts at $3,500. We use Schluter waterproofing systems on wet-area work because we don’t want callbacks, and neither do you.
Licensed General Contractor in Gilroy
As a Licensed General Contractor, we take on whole-home remodels, additions, and new structures, including detached ADUs and garages on Gilroy’s rural edges. That’s where the job stops being a straightforward remodel. On acreage outside the city, county permitting, septic and well setbacks, and grading requirements dictate what can be built where. We’ve sat in enough county pre-app meetings to know the questions inspectors will ask. That means your plans pass the first time, not after three resubmissions.
Additions and ADUs on Gilroy Acreage
Building an ADU in Gilroy is different than in Morgan Hill or San Martin, because the unincorporated parcels west of Highway 101 often have septic systems and wells rather than city sewer and water. A detached ADU here typically costs $90,000 to $220,000, and a home addition runs $45,000 to $130,000. The spread reflects site work: hauling materials down long unpaved drives, setting the structure away from drain fields, and grading for winter rain before the first wall goes up. We scope all of that before quoting.
Garage Conversions and Outbuildings
Garage conversions on Gilroy lots that back onto orchards or working farmland bring their own set of issues: old irrigation lines under the slab, agricultural drainage that flows through your property after winter rains, and dust from field work that settles into open framing. A garage conversion runs $30,000 to $80,000 in this market. We factor ag-interface conditions into the estimate from day one, because finding an old irrigation pipe mid-pour is a lot cheaper than finding it after the slab cures.
Trusted Brands We Service in Gilroy
Gilroy homeowners deserve brand-name materials without driving to San Jose to see them. We work with over 50 manufacturers across every home system, so you can specify PGT impact windows for a west-facing wall that bakes in summer heat, Boral siding that holds up to Gilroy’s UV load, or Tamko roofing on a ranch house that takes full valley sun. We stock and source local parts for Gilroy customers, and our supplier relationships mean we’re not waiting on a warehouse three cities away when a phase needs materials. You pick from curated options, we handle procurement and install.
See the difference
Before
After
Before
After
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AfterCommon General Contractor Problems We See in Gilroy Homes
- County permit surprises on unincorporated land. A plan that works comfortably inside Gilroy city limits may not fly with county septic and well setback rules. We check that before quoting, not after you’ve paid a draftsperson.
- Old irrigation lines and ag drainage on orchard-adjacent lots. Gilroy’s edge subdivisions back onto active farmland, and abandoned irrigation pipes under the soil cause grading and foundation headaches. We probe for them before concrete goes in.
- Long material hauls and unpaved access. Properties off Hecker Pass Road or in the hills east of town often have 300-plus feet of gravel drive and tight turnarounds. That changes delivery logistics and labor cost, and it should be in the estimate.
- Summer heat on exterior work. Gilroy gets hotter and frostier than the coastal Bay. Concrete pours, roofing, and exterior coatings schedule best in spring and fall. We plan around the heat so your job doesn’t slow to a crawl in July.
Pricing for General Contractor in Gilroy, CA
Here’s what we quote in Gilroy right now. These are fixed ranges, not ballparks pulled from a national database:
| Project | Gilroy Market Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
What moves the number is site-specific: septic and well setbacks on county land, haul distance, grading requirements, and whether the structure sits on frost- and heat-exposed soil. We’d rather spend an hour walking your Gilroy property before quoting than hand you a number that changes later. Estimates are free. Call (855) 901-7266.
We Also Serve Cities Near Gilroy
Our crews work throughout South Santa Clara County. We serve San Martin, Aromas, Morgan Hill, and San Juan Bautista, bringing the same single-contract approach to every job. If you’re searching for a General Contractor in Gilroy and live just outside the city, we’ll still come to you.
Serving Gilroy, CA — Our Local Coverage Area
We’re based in the Gilroy 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 Gilroy
If your parcel sits outside Gilroy city limits in unincorporated Santa Clara County, the county issues most of your permits, not the city. That means county planning and building review, county inspection schedules, and county rules on ADU size, placement, and height. We handle county submittals and inspections as part of our general contractor scope, and we’ll tell you at the first walkthrough which agency has jurisdiction over your specific address. Call (855) 901-7266 and we’ll scope it for you.
Well and septic setbacks dictate where a structure can physically sit on your lot in Gilroy’s unincorporated areas. A detached ADU, shop, or addition must clear the septic tank, drain field, and well by specific distances, and that boundary shrinks your buildable envelope faster than most homeowners expect. We survey those setbacks before quoting so you know exactly what fits. If a design needs to shift, we catch it before the county sees the plans.
Expect added logistics cost and schedule time if your parcel sits on a long unpaved drive or has a tight turnaround, which is common off Hecker Pass Road and in the Gilroy hills. Concrete trucks, lumber drops, and skid steers need stable ground and clear access, and if they can’t get to the pad, materials get staged out front and hand-carried or run back with a smaller machine. We include haul distance and access conditions as a line item in every rural Gilroy estimate so the schedule reflects reality, not a map.
We plan around the ag calendar. On Gilroy lots that back onto orchards or garlic fields, we schedule open framing, dry-in, and exterior finishes to avoid peak dust and harvest traffic windows when possible. That can mean shifting demolition and grading earlier or later in the season. We also cover open material stock and use dust control on exposed subgrade, because dry Gilroy summers turn any exposed soil into a dust source.
Yes, and it’s a large part of what we do on Gilroy acreage. A detached shop, barn-style outbuilding, or ADU on a county parcel requires county permits, possible grading approval, and setback compliance from wells, septic, and property lines. We recently completed a detached ADU and shop building on a rural parcel off Hecker Pass Road, where the well and septic setbacks dictated the building envelope and we had to haul materials over 500 feet of unpaved drive. Our crew worked with county inspectors for permits and rough-in sign-off, managed a spring build schedule to avoid summer heat on concrete pours, and delivered a turnkey ADU with KraftMaid cabinetry and Kohler fixtures before the fall rains. Call (855) 901-7266 and we’ll walk your lot and tell you what’s buildable.
If you’re pricing a remodel, addition, or ADU in Gilroy, get a fixed number before you commit. Call (855) 901-7266 to schedule your free estimate with San Mateo Construction.
Written by Noel Carrington, Owner at San Mateo Construction, serving Gilroy and South Santa Clara County.