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 planning a kitchen remodel, a whole-home renovation, or an ADU on your San Martin property, you need a general contractor who understands how work actually gets done in this part of Santa Clara County. We’re San Bernardino Contractors, and we handle every phase of residential construction from roofing and windows to cabinets, countertops, bathrooms, and hardscaping. Ruben Castillo leads our team, and we’ve built our reputation on one thing: one contractor managing every trade, every material, and every permit from the first site walk to final inspection. Call (855) 473-5620 for a free estimate on your San Martin project.
Why San Bernardino Contractors Is San Martin’s Preferred General Contractor Company
San Martin homeowners face something their neighbors in Morgan Hill and Gilroy never deal with: every permit goes through Santa Clara County because this community is unincorporated. County review means well verification, septic testing, and a longer paper trail than a city building department would require. Our team knows the county’s process, and we build that into the schedule up front instead of discovering it halfway through your remodel.
We coordinate directly with Santa Clara County planning and building staff, order materials only after the approvals that matter are in hand, and keep you informed at each step. When a San Martin project hinges on whether a 40-year-old septic system can handle an added bathroom, we don’t guess. We verify before we design. That’s the difference between a contractor who works here regularly and one who treats San Martin like any other city.
Our General Contractor team handles everything from first demo to final walkthrough. You won’t get passed between a roofer, a cabinet shop, and a tile sub. You call one number, and we own the whole job.
Styles & brands we work with
Residential General Contractor in San Martin
A residential general contractor in San Martin manages the full scope of your project: planning, permits, material ordering, trade coordination, inspections, and the punch list at the end. For San Martin homeowners, that scope almost always starts with Santa Clara County approval, not just a quick city permit. Typical kitchen remodels run $14,000 to $45,000, bathrooms $9,000 to $28,000, and a full home addition $45,000 to $130,000.
Whole-Home Scope
Most San Martin properties are ranch-style homes on acreage, older farmhouses, or wine-country estates. That means a “remodel” often touches multiple systems at once: a new roof in GAF or CertainTeed shingles, impact windows for wildfire smoke season, and a kitchen with Cambria quartz countertops. We take the whole home in one pass rather than hiring a different specialist for each phase.
Scheduling Around County Review
Santa Clara County plan check for unincorporated parcels typically takes longer than city review in Morgan Hill or Gilroy. We build that into the timeline and order long-lead items like custom cabinetry only after the county has signed off on the plans that require them. That protects your budget from rework.
Hire a General Contractor in San Martin
You hire a general contractor in San Martin when the project spans multiple trades and you want one person accountable for the whole build. On large lots with wells and septic systems, that accountability matters more than in a typical suburban subdivision. Additions start around $45,000 and ADUs range from $90,000 to $220,000, depending on site conditions and finish level.
Single Point of Contact
No subcontractor shuffle. When you hire us, you deal with one team from start to finish. If a tile backsplash is delayed, we don’t point fingers at a tile sub. We fix the schedule. If a cabinet order from Wellborn or KraftMaid slips, we adjust the sequence so your kitchen doesn’t stall.
Fixed Pricing Before Ordering
We issue fixed pricing in writing before ordering any long-lead materials. That means the Grohe fixtures, the Cambria slab, and the architectural glass get locked in at a known cost. If the county’s septic review changes the scope, we issue a change order you approve first. No surprises at the end.
Trusted Brands We Service in San Martin
From GAF and CertainTeed roofing systems to Grohe and Sterling plumbing fixtures, we work with the brands San Martin homeowners ask for by name. You pick the brand, we handle the build. Because we maintain relationships across more than 50 product lines, we can source everything from entry-level to ultra-premium without switching contractors. Need a Kohler steam shower, Wellborn cabinetry, and Cambria countertops in one bathroom? That’s a normal Tuesday for us. We keep parts availability and lead times top of mind for every San Martin job, so you’re never waiting on a mystery material.
See the difference
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After
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AfterCommon General Contractor Problems We See in San Martin Homes
- Well and septic surprises on older parcels: Many San Martin homes were built decades ago on private wells and septic systems that have never been upgraded. An addition that looks simple on paper can trigger a full septic perc test and well yield verification before the county will even review the framing plans.
- CalFire defensible-space requirements on exteriors: San Martin sits in a warm inland valley with wildfire smoke and mandatory defensible-space rules. Siding choices like James Hardie fiber-cement and fire-rated decking have to meet CalFire standards, and we’ve seen projects fail inspection over the wrong exterior material specification.
- Long-lead custom items disrupting schedules: Architectural glass, custom millwork, and specialty cabinet lines often run 10 to 16 weeks from order to delivery. When a homeowner orders those before permits are final, the county’s plan check can force a redesign that leaves thousands of dollars of cabinetry unusable.
- Unincorporated permitting confusion: A project on one side of a San Martin road may go through Santa Clara County while an identical job minutes away in Morgan Hill goes through city review. Homeowners who assume city rules apply often miss required well and septic checks entirely.
Pricing for General Contractor in San Martin, CA
Here’s what San Martin homeowners can expect to pay for the most common projects. These ranges reflect the county’s permitting requirements, local material costs, and the unincorporated septic-and-well verification that doesn’t apply in nearby cities.
| Project | Typical San Martin 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 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
What moves the number? Septic and well upgrades on unincorporated parcels can add $10,000 to $30,000 depending on what the county’s review uncovers. Your finish level drives the rest. Call (855) 473-5620 and we’ll give you a written, line-item quote before anything gets ordered.
We Also Serve Cities Near San Martin
San Martin is our focus here, but we also serve San Martin neighbors in Morgan Hill, Gilroy, Amesti, and Corralitos. If you’re just over the line in a city with different building rules, we know those processes too. One contractor for the whole region.
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
You should plan for an extra four to eight weeks on top of the normal county plan check timeline. Santa Clara County requires well yield verification and a septic perc test before it will approve any addition or new build on an unincorporated parcel. We front-load those reviews at the start of the project like we did on a Llagas Road ranch home where the septic perc test added six weeks before we could order the Wellborn cabinetry and Kohler steam shower. Call (855) 473-5620 to get a realistic timeline for your specific parcel.
Yes. We work with custom millwork shops and architectural glass suppliers on high-end San Martin projects every year. The key is sequencing: we order those long-lead items only after the county has approved the plans that lock in their dimensions, so you don’t pay for a redesign. You pick the brand, we handle the build.
Every permit goes through Santa Clara County, not a city building department. That means well and septic verification first, followed by county plan check, then building permits. We prepare all documentation, submit on your behalf, and coordinate inspections so you never sit across the counter from a county reviewer wondering what to say.
We specify CalFire-compliant materials from the start: James Hardie fiber-cement siding, fire-rated decking, and GAF or CertainTeed shingles rated for ember resistance. San Martin’s hot, dry summers and periodic wildfire smoke make defensible space a real requirement, and we’ve seen projects fail final inspection over the wrong exterior product. We don’t let that happen.
Yes. We lock allowances in writing for cabinetry, countertops, fixtures, and architectural glass before any order is placed. If a county review forces a scope change, you approve a written change order first. That’s how we protected a San Martin client’s wine room project when the well pump needed an upgrade mid-approval.
Ready to start? Call (855) 473-5620 for a free estimate on your San Martin project. We’ll walk the site, check the county requirements, and give you a written number before you commit to anything.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving San Martin and the surrounding Santa Clara County area.