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
Hiring a general contractor in San Martin means dealing with Santa Clara County permits, well and septic setbacks, and long private drives most city builders never touch. Our crew works those conditions every week. We scope the real costs before we quote, so you’re not surprised when the fire district asks for water-supply review or the county wants additional erosion control. Call (833) 725-3508 and we’ll walk your property with you.
Nate Burrell runs our team, and he’s built his reputation on showing clients exactly where their money goes on an acreage build before a shovel hits dirt. From our base in Morgan Hill, we reach San Martin fast for Mr-Glass repair in San Martin and we know the county’s approval path cold.
Why Brookside Contractors Is San Martin’s Preferred General Contractor Company
San Martin homeowners call us when they need one team that understands the unincorporated county rules. We’ve completed detached shops, ADUs, room additions, and full re-roofs on properties from Llagas Avenue down toward the southern edge of the 95046 corridor. Our local credibility comes from doing the unglamorous coordination work: the county submittal, the fire district access review, the septic clearance, the well setback.
Response time to San Martin from our Morgan Hill shop is short, usually same-week for estimates on most scopes. Customers regularly note that we show up when we say we will, and that we explain the county review steps in plain English. When a permit path has two agencies instead of one, clarity matters more than speed.
Local knowledge here isn’t a talking point. It’s knowing which San Martin parcels sit in fire hazard severity zones that require additional access and water-supply review before the county will stamp a building permit. That’s the difference between a quote that holds and a change order that stings.
Styles & brands we work with







General Contractor Services in San Martin
General Contractor Services in San Martin span what the property actually demands, which is often more than a single interior remodel or exterior patch. On a multi-acre parcel, a general contractor coordinates the structural work, the utilities clearance, the site access plan, and the finished surfaces. A typical home addition in San Martin runs $45,000 to $130,000. A detached ADU runs $90,000 to $220,000. A garage conversion runs $30,000 to $80,000. Those ranges reflect local site work, not just the structure.
Additions and ADUs on acreage
When the county requires a well setback and septic clearance before you can set forms, the job doesn’t start with a foundation. It starts with a site plan that survives county review. We handle that first. Then we bring the General Contractor scope through framing, rough-in, finishes, and final inspection.

Outbuildings, shops, and full remodels
Detached shops, barns, and accessory structures on San Martin properties need the same county permits and often trigger fire district review for access and water supply. We pull the permits, coordinate the inspections, and keep the interior remodel moving on the main house while the outbuilding gets framed.

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.
Construction Company in San Martin
A Construction Company in San Martin is doing different work than one in Morgan Hill or Gilroy. Our contracts here routinely include grading, drainage planning, and private road access logistics, because the county’s erosion control requirements and the lot itself demand them. When a homeowner calls about a kitchen remodel on a ranch property, we assess the whole parcel, not just the room. The county permit path touches everything.
Site work and drainage
On a sloped or unpaved lot off a private drive, winter rains will find a way under your new slab if the grading wasn’t planned first. We add erosion control before the county asks, not after. That’s part of how we keep a San Martin budget from drifting.
Material hauling and equipment access
Long gravel drives and narrow gate openings change the cost of a delivery. Our crews schedule material runs carefully and bring equipment sized for the access we actually have. This is the practical side of building in San Martin that a spec-sheet quote ignores.
Trusted Brands We Service in San Martin
San Martin homeowners don’t get handed a one-size-fits-all spec. You choose the quality tier, we deliver it. For hardscaping and outdoor living on acreage, we work with Belgard, Unilock, and Techo-Bloc pavers, matching material to the project rather than pushing whatever’s in stock. For kitchens and baths, the same applies across cabinetry, countertops, and fixtures. We carry local parts availability for San Martin customers, which means fewer delays when a project needs a specific trim or hardware component.
Common General Contractor Problems We See in San Martin Homes
- Quoting a detached ADU with a city permit timeline. San Martin is unincorporated, so Santa Clara County and the fire district add review steps that a Morgan Hill quote won’t include. We’ve seen projects stall for months because a builder assumed an eight-week approval.
- Missing septic and well setbacks on open acreage. A parcel can look buildable until the county says the leach field needs 100 feet of clearance from the proposed ADU. That forces a re-scope or a painful change order after excavation starts.
- Underestimating material haul distance down long private drives. Gravel road access burns time on every delivery and adds wear on equipment. We plan for it in the draw schedule instead of pretending it doesn’t exist.
- Summer heat on exposed framing in the south county valley. San Martin’s hot dry summers can warp exposed lumber if framing sits too long before sheathing. Our schedules keep framing moving through shade-appropriate sequencing, even on open lots.
See the difference
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After
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AfterPricing for General Contractor in San Martin, CA
A general contractor quote in San Martin includes line items that never appear on a city lot bid: county permit review, fire district access sign-off, well and septic clearance, and grading or drainage control on open ground. Here’s what our San Martin customers typically see:
| Project Type | San Martin Typical Range |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
Those ranges include the San Martin site work: septic and well setback review, access planning, and erosion control. Free estimates are standard. Call (833) 725-3508 and we’ll walk the property with you before we put a number in writing.
We Also Serve Cities Near San Martin
From our Morgan Hill base, we serve San Martin and the surrounding south county communities. If your property sits closer to Gilroy, Amesti, or Corralitos, the same county permit path applies and our crew knows these roads. General Contractor in San Martin work regularly takes us into neighboring zip codes, and we schedule estimates across the whole corridor.
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, a detached shop or ADU in San Martin requires building permits from Santa Clara County, and most also need a separate sign-off from the local fire district for rural water-supply and access requirements. We coordinate both reviews so the project doesn’t stall between agencies. Call (833) 725-3508 and we’ll map the path for your specific parcel.
Well and septic setbacks can add $3,000 to $12,000 in site work and redesign, depending on where your existing leach field and well are located relative to the proposed structure. If a setback forces a different building location or a new septic system, the cost rises further. We survey the setbacks during the estimate so the quote reflects reality.
Yes, we plan material deliveries and equipment moves around San Martin’s private gravel drives and narrow access points every week. The access conditions affect scheduling and sometimes delivery fees, but we account for them in the draw schedule before work starts. Call (833) 725-3508 and we’ll assess your drive in person.
On an open-lot San Martin build, the contractor manages county permitting, fire district access review, well and septic clearance, grading, drainage, and erosion control before any structure goes up. A city lot quote skips those steps. We scope them up front, not after excavation starts.
We keep a San Martin construction budget from drifting by scoping county permit timelines, well and septic setbacks, private road access, and drainage requirements before we quote. A written line-item estimate means you see exactly which costs are site work and which are structure. Estimates are free, call (833) 725-3508.
One Contractor, Every Phase
On a multi-acre parcel off Llagas Road, we built a detached ADU and shop where the county required a well setback and septic clearance before we could set forms. Our crew hauled materials down a private gravel drive and scheduled framing early to avoid peak summer heat on exposed lumber, then added erosion control before winter rains. The county permit and fire district sign-off came through after our rough-in inspection and punch list walk. That’s what we mean when we say one contractor, every phase from foundation to finish. No baton passing, no coordination chaos.
From kitchen remodels and bathroom remodels on older San Martin ranch homes, to new custom builds on vineyard estate parcels, to detached ADUs and shops on open acreage, the scope is yours. The brands are yours. The accountability is ours. If your project is in the 95046 corridor, start with a free walk-through. Call (833) 725-3508 and ask for Nate.
Written by Nate Burrell, Owner at Brookside Contractors, serving San Martin and the south Santa Clara County corridor from Morgan Hill.