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
Need a general contractor in San Martin who actually knows how unincorporated Santa Clara County works? You’re not looking for someone to hand you a catalog and disappear. You need a team that understands county permits, Llagas Creek flood corridor rules, and what it takes to build on large rural lots. Timberline Contractors brings that local knowledge to every job, from a kitchen remodel on a ranch house to a full home addition on the valley floor. Call (866) 253-5808 to schedule your free estimate, and we’ll walk you through exactly what your project needs before you spend a dime.
Key Takeaways
- All residential permits in San Martin run through Santa Clara County, not a city building department.
- Wind-load rated fasteners and clips are required on roofing and framing – skimping here fails shear inspections.
- Home additions in San Martin typically run $45,000 – $130,000 depending on scope and site conditions.
- We manage brand selection, county permit coordination, and site inspection scheduling under one contract.
Why Timberline Contractors Is San Martin’s Preferred General Contractor Company
San Martin homeowners call us because we show up knowing the difference between a Gilroy city inspection and a Santa Clara County one. The two jurisdictions sit minutes apart, but the paperwork, review times, and engineering requirements are not the same. That matters when a beam needs to be sized or a grading plan has to clear flood corridor review. Nelson Fung has built Timberline Contractors around that kind of specificity: one contractor, every phase, from the foundation to the ridge cap.
Our reputation in San Martin comes from jobs completed without the permit surprises that plague County work. We recently completed a home addition on No Name Uno Road where the existing ranch house needed a new load-bearing beam installed. Our crew pulled the county permit, coordinated a site inspection for the beam and foundation work, and installed a Wellborn cabinet package with Cambria countertops in the new kitchen. The homeowner received inspection sign-off before we closed up the walls, and the documented compliance helped them secure a better insurance rate.
You won’t find us cutting corners on shear wall hardware or skipping engineering calculations to save a few hundred dollars. That’s how failing inspections and stop-work orders happen. We’d rather do it right, get it signed off, and hand you paperwork that holds up when your insurance company asks questions.
Styles & brands we work with
Licensed General Contractor in San Martin
A licensed general contractor in San Martin is the person who carries the project from county permit application through final inspection, coordinating structural engineering, material orders, subcontractors, and site compliance along the way. For San Martin homeowners, that responsibility gets heavier because you’re dealing with Santa Clara County’s planning and building department for every residential permit. A home addition on a large rural lot may trigger grading review, septic system coordination, or flood corridor evaluation before the first inspection is scheduled. Typical home additions here run $45,000 – $130,000, and garage conversions land in the $30,000 – $80,000 range depending on foundation work, electrical upgrades, and the condition of the existing slab.
County Permit Management
We handle the Santa Clara County submittal process directly, including engineering review for any grading near Llagas Creek’s flood corridor. That step exists because San Martin has no city building department of its own, so everything moves through the County. Our experience means we know what gets flagged and what moves through cleanly.
Inspection Coordination
Every phase of structural work requires a County inspection: foundation forms, framing and shear, rough electrical and plumbing, insulation, and final. We schedule those inspections at the right points so work doesn’t stall waiting on a sign-off, and we show up with the paperwork in order.
Residential General Contractor in San Martin
A residential general contractor in San Martin works on the older ranch houses, farmworker-era homes, and newer custom builds that define this part of South County. The housing stock here trends toward single-story and split-level homes on larger parcels, with room additions and accessory structures being far more common than tract-home production work. A typical bathroom remodel runs $9,000 – $28,000, while a kitchen remodel lands between $14,000 and $45,000 depending on layout changes, cabinet tier, and countertop selection. The warm, dry San Martin climate means roofing and exterior work can proceed most of the year, but winter rains demand careful scheduling around concrete pours and drainage work.
Additions and ADUs on Rural Parcels
Larger lots mean more site planning: setbacks, well locations, septic leach field clearances, and defensible-space clearing all factor into where an addition can go. This is not production building. Every parcel has its own constraints, and we handle that early in the design conversation so you don’t fall in love with a floor plan that won’t clear the County’s review.
Roofing and Exterior Envelope Work
San Martin sits in the warm, dry southern Santa Clara Valley, with strong summer sun and long stretches without rain. That puts roof sheathing, fascia, and flashing under real UV stress and makes wind-uplift rated fasteners and clips non-negotiable on re-roofs and framing. We install GAF and CertainTeed roofing systems with full manufacturer compliance, because a roof that fails a shear inspection is a roof that doesn’t get signed off.
Trusted Brands We Service in San Martin
Timberline Contractors works with 50-plus brand partners, so your kitchen can have a Blanco sink, a Toto toilet, and American Standard fixtures in the hall bath without bouncing between suppliers. We bring the showroom to the project: Cambria and Silestone countertops, KraftMaid and Wellborn cabinetry, James Hardie siding, Therma-Tru entry doors. For San Martin customers, that means ordering replacement parts and hardware through one contractor instead of chasing down three separate vendors.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in San Martin Homes
- Skipped engineering calculations on load-bearing changes. We see field fixes that work until a County inspector asks for the stamped drawing. A beam sized by eye doesn’t pass, and the rework costs more than the engineer would have.
- Missing wind-uplift hardware on roof sheathing and framing. San Martin requires specific fasteners and clips at shear panel edges. When they’re left out, the shear inspection fails, and an insurance claim after a wind event can get denied for non-compliant installation.
- Drainage and grading plans that ignore Llagas Creek’s flood corridor. Properties near the creek face additional review on any grading or foundation work. A plan that doesn’t address drainage early gets stuck at the County counter or triggers a stop-work notice mid-project.
- Septic system conflicts on rural parcels. Additions and ADUs have to respect existing septic leach field setbacks. Without early coordination, you can end up with a design that can’t be permitted on your own property.
Pricing for General Contractor in San Martin, CA
Here’s what you’re looking at for the most common San Martin projects. These ranges reflect current South County market conditions and typical parcel constraints in the 95046 zip code.
| Project Type | Typical Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves the number: lot size and access, whether the work is on a slope, existing foundation condition, distance to the septic system, and whether the project touches the Llagas Creek flood corridor. Higher-end material selections, like Caesarstone countertops or Grohe fixtures, also push a project toward the top of the range. We provide written, line-item estimates so you can see exactly where the money goes. Call (866) 253-5808 to get yours.
We Also Serve Cities Near San Martin
Timberline Contractors handles general contractor work across South County. If you’re planning a remodel in Morgan Hill, a home addition in Gilroy, or a deck or outdoor project near Amesti or Corralitos, our General Contractor team covers the whole corridor. We know how each jurisdiction differs, from General Contractor in San Martin permitting to municipal inspections in the incorporated cities nearby.
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
Yes, every room addition in San Martin requires a building permit issued by Santa Clara County’s planning and building department, because San Martin has no city building department of its own. The permit process includes plan review, structural calculations for any load-bearing changes, and a series of inspections from foundation through final. Call (866) 253-5808 if you want help navigating the submittal.
San Martin falls within a wind exposure category that requires rated fasteners, clips, and shear panel nailing patterns on all roof sheathing and framed walls. The specific rating and hardware schedule gets determined during plan review, but a compliant quote includes the engineering, the hardware, and the inspection coordination. Cheap bids that leave those line items out fail inspection and put insurance claims at risk.
Any construction within or near the Llagas Creek flood corridor triggers additional County review for grading, drainage, and foundation elevation. Your project may need a hydrology study or engineered drainage plan before the permit is approved. We handle that review as part of our general contractor scope, so the County sees the full picture on the first submittal.
A compliant quote should include engineering calculations for structural changes, wind-uplift rated hardware and fasteners, a drainage and grading plan if you’re near the flood corridor, and documented inspection sign-offs at each phase. Those items are what an insurance company looks for after a claim. A quote that skips them is cheaper on paper and more expensive later.
Yes, garage conversions to ADUs are permitted in San Martin, with costs typically running $30,000 – $80,000 depending on the condition of the existing structure. The key steps are verifying the slab and foundation can carry the new load, upgrading electrical service to County standard, confirming septic system capacity on rural parcels, and completing the County review process for an accessory dwelling unit. Call (866) 253-5808 to discuss whether your garage is a good candidate.
Written by Nelson Fung, Owner at Timberline Contractors, serving San Martin and South Santa Clara County.