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 Martin
If you’re looking for a general contractor in San Martin who understands Santa Clara County’s permitting process, you’ve found the right team. We serve the 95046 zip code with full-scope remodeling, renovation, and ADU construction, and we know how unincorporated county rules shape every project here. Noel Carrington leads San Mateo Construction with a simple promise: one contract, one accountable team, from roofline to foundation. Call (855) 901-7266 for a free estimate on your San Martin project.
Why San Mateo Construction Is San Martin’s Preferred General Contractor Company
San Martin homeowners call us because we’ve already worked through the county permit sequence dozens of times. We know what Santa Clara County inspectors look for on accessory structures, and we know how to schedule inspections so your project doesn’t stall between phases. That local knowledge saves real time on San Martin jobs.
Our San Martin customers consistently tell us the same thing: they wanted one contractor who could handle the whole scope without handing them a patchwork of subcontractors to manage. That’s exactly how we work. Whether it’s a kitchen remodel on a ranch home off Monterey Road or a new ADU on a multi-acre parcel, the same project lead stays with you from first walkthrough to final inspection.
We’re based nearby in San Mateo County, which means we can reach San Martin quickly for site visits, material deliveries, and inspections. Our crews know the Llagas Creek corridor, the newer large-lot custom builds along Monterey Road, and the older ranch properties that come with detached shops and barns. That’s not generic contractor knowledge. It’s specific to working here.
Styles & brands we work with
Hire a General Contractor in San Martin
Hire a General Contractor in San Martin when your project spans multiple trades and needs one accountable point of contact. On unincorporated county land, that matters more than anywhere else, because every permit, every grading review, and every inspection runs through Santa Clara County. A kitchen remodel in San Martin typically runs $14,000 to $45,000. A full home addition runs $45,000 to $130,000. Those ranges include the county permit coordination that suburban contractors often overlook.
Whole-Home Coordination
You don’t have to call three different companies when your project involves roofing, windows, and interior finishes. We manage the full scope under one contract. That means one schedule, one point of contact, and no finger-pointing between trades when something needs adjusting.
County Permit Management
We handle the permit applications, grading reviews, and inspection scheduling with Santa Clara County directly. You won’t be left to decode county requirements on your own. We’ll tell you what needs to be done, in what order, and what it’ll cost before we start.
General Contractor Services in San Martin
General Contractor Services in San Martin cover everything from kitchen and bath remodels to full ADU construction and garage conversions. Because San Martin sits on clay-heavy soils with dry summers and winter rain, we time grading and foundation work around the wet season. Exterior work gets scheduled for the dry months, when crews can work efficiently and concrete cures properly.
Kitchen and Bath Remodeling
We install cabinetry from KraftMaid and Wellborn, countertops from Cambria, Silestone, and Caesarstone, and plumbing fixtures from Kohler, Grohe, and Moen. You choose from curated name-brand options that fit your budget, not whatever happens to be on a warehouse shelf. A small kitchen remodel in San Martin runs $9,000 to $20,000; a bathroom remodel runs $9,000 to $28,000.
ADU and Garage Conversion Work
San Martin’s rural lots are well-suited to ADUs, and we build them through vetted prefab manufacturers like Abodu and Plant Prefab as well as traditional stick-built construction. ADU construction in San Martin runs $90,000 to $220,000 depending on size, site conditions, and whether you choose prefab or site-built. A garage conversion runs $30,000 to $80,000.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Martin
We’ve built working relationships with 50+ industry-recognized suppliers, and that shows up on San Martin job sites. Need impact-rated windows for a wind-exposed property? We install PGT and CGI products. Roof replacement? We work with GAF, CertainTeed, and Owens Corning systems. We also carry Tamko and Boral options where the project calls for them. Because we stock and order from these suppliers regularly, material lead times are shorter, and we can source local parts quickly when a San Martin job needs a specific product to pass county inspection. You’re not waiting on a special order from a contractor who rarely touches these brands.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in San Martin Homes
- Unpermitted barns and shops that surface during a sale or new permit. Off Monterey Road especially, we regularly encounter pre-existing structures that were never brought through Santa Clara County’s process. These need legalization, structural upgrades, and documentation before any new work can proceed.
- Grading and drainage issues on clay-heavy soils. San Martin’s winter rain saturates the clay, and poorly graded sites show it immediately. Skipping the county’s grading and drainage review for accessory structures leads to failed inspections and costly rework.
- Non-rated roof sheathing and connections on wind-exposed buildings. Ranch properties with open exposure need materials and fastening patterns that meet local wind-load requirements. Using non-rated products fails inspection and leaves the structure vulnerable.
- Wells and septic systems that complicate foundation and addition work. Many San Martin properties run on well and septic, not municipal services. That changes setbacks, trenching, and what the county will approve for new structures on your parcel.
Pricing for General Contractor in San Martin, CA
Here’s what you can expect to pay in San Martin’s market. These are the ranges we quote, and they’re calibrated to county permit requirements, local material costs, and the site conditions common on San Martin parcels.
| Project Type | Typical Range in San Martin |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number? Site access, grading requirements, whether the county flags existing unpermitted work, and the material tier you select. A Cambria countertop costs more than Silestone. A PGT impact window costs more than a standard PGT unit. We’ll give you honest guidance on where to spend and where to save. Call (855) 901-7266 for a free, written estimate.
We Also Serve Cities Near San Martin
San Mateo Construction serves San Martin and the surrounding South County communities. We’re active in Morgan Hill, Gilroy, Amesti, and Corralitos with the same county-permit expertise and full-scope General Contractor services. Wherever your project sits, one team handles it from start to finish.
Serving San Martin, CA — Our Local Coverage Area
We’re based in the San Martin 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 Martin
New barns and shops in San Martin must meet Santa Clara County’s wind-load requirements for exposed rural sites, which typically means rated roof sheathing, properly spaced fasteners, and engineered lateral bracing at the connections. The exact rating depends on your parcel’s exposure and the structure’s dimensions, and it’s documented in the county-approved plans. We pull those specs before we quote so you’re not surprised during inspection. Call (855) 901-7266 to get your project scoped properly.
San Martin is unincorporated, so every permit runs through Santa Clara County’s building and grading process, not a city building department. Morgan Hill has its own city-level review, which moves differently and enforces its own municipal codes. San Martin projects also go through county grading and drainage review more often because of the rural parcel sizes and clay soils. We’ve handled both, and we’ll set your schedule around whichever jurisdiction applies. Call (855) 901-7266 and we’ll tell you what to expect on your specific parcel.
A compliant quote for storm-rated exterior work in San Martin should include rated roof sheathing, engineered connection details, and documentation that the materials and fastening patterns meet Santa Clara County wind-load requirements. It should also include the permit fees, county grading review if applicable, and the inspection schedule. If a quote doesn’t itemize those things, it’s leaving out the parts that get you to a passing inspection. We itemize everything. Call (855) 901-7266 for a quote that shows the full scope.
Legalizing an unpermitted structure through Santa Clara County can protect you from insurance claim denials and premium increases if the insurer ever discovers the non-permitted work. Once the county documents that the structure meets current wind-load and safety requirements, you have paperwork that satisfies most insurers. On a ranch property off Monterey Road, we legalized a pre-existing unpermitted barn by upgrading its lateral bracing and roof sheathing, then pulled permits and scheduled inspections in the correct sequence. The client received a documented compliance letter that satisfied their insurer and avoided a premium surcharge. Call (855) 901-7266 to discuss your property.
A typical San Martin ADU draw schedule breaks into five to seven payments tied to specific milestones: deposit and permit submission, grading and foundation, framing and rough-in, mechanical and drywall, finishes, and final inspection and occupancy. County inspections gate several of those draws, so the schedule follows what Santa Clara County approves at each phase. We’ll lay out the exact schedule in your contract before work starts. Call (855) 901-7266 for a detailed ADU proposal.
Written by Noel Carrington, Owner at San Mateo Construction, serving San Martin and the surrounding South County communities.