Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterRemodeling Company in San Martin, CA
Home remodeling in San Martin runs from $9,000 for a small bathroom refresh to $130,000 for a full home addition, with most whole-house projects landing between $45,000 and $130,000 depending on scope and materials. We’re Penhallow Remodeling, and we handle kitchen remodels, bathroom remodels, and whole-home renovations for San Martin’s rural residential properties, from custom single-family homes on acreage to equestrian estates with ag-exempt outbuildings. Call us at (936) 259-2607 to schedule your free estimate.
San Martin’s unincorporated status means every permit, inspection, and zoning variance flows through Santa Clara County’s Department of Planning and Development, not a city hall. That slower, distinct process, combined with large-lot parcels, private wells, septic systems, and expansive clay soils, makes local experience matter on every job. We coordinate dispatch and scheduling from our San Francisco Bay Area office, with crews serving San Martin directly.
Why San Martin Homes Are Different
San Martin sits on moderately to highly expansive clay soils carried down from the Diablo Range, the kind that swell with winter rain and shrink through summer drought, heaving slabs and stressing foundations on a predictable annual cycle. That means every addition or major remodel starts with soil engineering, not a standard foundation detail pulled from a city plan set.
The housing stock here is almost entirely custom single-family homes built from the 1970s through the 1990s, many on one to ten or more acres, alongside horse barns, detached workshops, and agricultural outbuildings. Unlike tract neighborhoods where contractors repeat the same plan, San Martin jobs demand site-specific structural solutions. Summers bring hot, dry afternoons with strong winds through the coastal gaps, accelerating concrete cure times and compressing the flatwork schedule. And because so many properties rely on private wells and septic systems, any new structure can trigger mandatory setback recalculations from both the wellhead and the leach field, sometimes forcing redesigns mid-permit. We’ve been caught by it before, and we now survey both before we draw.
Our Main San Martin Services
San Martin homeowners call us most often for whole-home renovations and room additions, but kitchen and bathroom remodels run close behind. Here’s what each service looks like in this market.
General Contractor in San Martin
As general contractors in San Martin, we manage the full permit path through Santa Clara County, coordinate well and septic setback surveys, and sequence trades around rural site conditions like limited access roads and seasonal weather windows. Every project gets a written price before work starts and a 365-Day Done Right Promise in writing. General Contractor in San Martin
Bathroom Remodeling in San Martin
Bathroom remodels in San Martin often involve reconfiguring layouts in 1970s and 1980s custom homes where original plumbing was routed for different fixture standards. We specify moisture-resistant cement board substrate behind every tile installation and source fixtures from Kohler, Moen, and Grohe. Bathroom Remodeling in San Martin
Kitchen Remodeling in San Martin
Kitchen remodels here frequently open up compartmentalized layouts common in 1980s and 1990s custom builds, with cabinet lines from KraftMaid and Wellborn and countertops in Cambria, Silestone, or Caesarstone. We account for well-water mineral content when specifying fixture finishes. Kitchen Remodeling in San Martin
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Home Remodeling in San Martin
Home remodeling in San Martin addresses the specific aging patterns of custom-built homes from the 1970s through 1990s, outdated layouts that don’t suit modern living, and the structural stresses imposed by expansive clay soils cycling through wet winters and dry summers. Home Remodeling here means working with county planners rather than city inspectors, coordinating well and septic setbacks on every addition, and specifying foundations and flatwork for soil that moves.
Whole House Remodel
Signs you need it
Your floor plan feels chopped up by too many small rooms, systems are original to the 1970s or 1980s, or you’ve noticed new cracks in drywall following the seasonal soil cycle.
What it costs in San Martin
A whole house remodel in San Martin typically runs $45,000 – $130,000 depending on square footage, structural changes, and whether we’re reconfiguring around existing well and septic locations.
How we do it
We start with a county permit strategy, survey well and septic setbacks, engineer foundations for expansive clay, then sequence demolition, structural work, systems, and finishes with a written price locked at the outset.
Home Renovation
Signs you need it
Specific rooms or systems are failing, but the overall layout works, such as a dated kitchen with functioning bathrooms, or aging HVAC with solid structure.
What it costs in San Martin
Targeted home renovations in San Martin range from $9,000 for a small bathroom refresh to $45,000 for a full kitchen remodel, with most falling between $14,000 and $45,000.
How we do it
We isolate the renovation zone, protect living spaces, replace or upgrade only what’s specified, and leave systems that tie to well or septic undisturbed unless the scope explicitly includes them.
What Home Remodeling Costs in San Martin
| Item | Typical range in San Martin |
|---|---|
| Small bathroom remodel | $5,000 – $12,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Small kitchen remodel | $9,000 – $20,000 |
| Kitchen remodel | $14,000 – $45,000 |
| Home addition | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
| Garage conversion | $30,000 – $80,000 |
Do you pull permits for home remodeling in San Martin?
Yes, we handle every permit through Santa Clara County’s Department of Planning and Development, since San Martin has no city building department. We submit plans, coordinate inspections, and manage any zoning variance if your well or septic setback requires redesign. Call (936) 259-2607 to discuss your project and schedule a free estimate.
Will the price change once demolition starts?
No, our written price is fixed before any work begins. The only exception is if you add scope, such as expanding a kitchen remodel to include the adjacent laundry after seeing the opened space. We document any change in a written amendment, never a verbal surprise. Call (936) 259-2607 for your written quote.
Brands We Service in San Martin
We install and service materials from recognized trade brands including KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone countertops, and Kohler, Moen, and Grohe fixtures. For exterior and structural work, we specify James Hardie siding and source concrete from Sakrete. Most standard items are available through our San Francisco Bay Area supply chain with turnaround that keeps projects on schedule. See our brands for the full list.
Pricing for Remodeling Company in San Martin, CA
| Service | Typical range in San Martin |
|---|---|
| Kitchen remodel | $14,000 – $45,000 |
| Small kitchen remodel | $9,000 – $20,000 |
| Cabinet installation | $4,000 – $13,000 |
| Countertop installation | $2,000 – $6,500 |
| Bathroom remodel | $9,000 – $28,000 |
| Small bathroom remodel | $5,000 – $12,000 |
| Walk-in shower installation | $4,500 – $12,000 |
| Tub-to-shower conversion | $3,500 – $10,000 |
| Home addition | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
| Garage conversion | $30,000 – $80,000 |
| Roof replacement | $8,000 – $20,000 |
Prices push higher in San Martin when projects require soil engineering for expansive clay, well and septic setback recalculations, or extended county permit timelines. Our written price covers all of this upfront, so the number you approve is the number on your invoice.
Neighborhoods We Serve in San Martin
We work across San Martin’s rural residential parcels, from established custom home neighborhoods to newer equestrian properties. Crews typically arrive within scheduled windows coordinated from our Bay Area office.
- San Martin Ranches
- Furlong Estates
- Old San Martin
- Paradise Valley
- San Martin Avenue corridor
Service Area – Cities Near San Martin
We serve San Martin homeowners and take projects in surrounding communities across southern Santa Clara County and into northern San Benito County. Our crews also work in Morgan Hill, CA, Gilroy, CA, Los Gatos, CA, and Campbell, CA. Each location gets the same Kingswell standard: written price first, defined arrival window, clean job site, and 365-Day Done Right Promise.
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 Remodeling Company in San Martin
Santa Clara County’s Department of Planning and Development typically takes four to eight weeks for residential remodel permits, longer if zoning variances or well and septic setbacks require revision. We submit complete plans to minimize back-and-forth and keep you informed at each status change.
Yes, many San Martin parcels include ag-exempt barns, workshops, or outbuildings alongside the primary residence. We coordinate with county planners to keep ag structures compliant while permitting residential remodels or additions on the same parcel, a common scenario here that’s rare in incorporated cities.
Yes, we survey wellheads and leach fields before finalizing addition footprints, since Santa Clara County mandates minimum setbacks that can force redesign if discovered late. We’ve learned to verify these early, and we build any needed recalculation into our permit timeline so it doesn’t delay construction.
What happens when you call
- 1A real person answersNo phone trees - talk to a local construction pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Martin Customers Say
"Kitchen and dining room opened up into one space. They were honest about which wall could come down and which couldn't, no sugarcoating. Dust was kept way down with plastic everywhere."
- Oscar Benitez"Redid two bathrooms at once. The crew protected the floors and cleaned up every single day before leaving. Quote was detailed and there were no mystery charges at the end."
- Tricia Dawson"Full home refresh before we sold. They were straight about what was worth doing and what wasn't to get our money back. On time, on budget, and it sold in a week."
- Monica Vaughn