Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Foster City, CA
Home remodeling in Foster City runs $9,000 – $130,000 depending on scope, with most whole-home projects falling between $45,000 and $130,000. We’re Penhallow Remodeling, and we build differently here because Foster City itself is different: every home sits on engineered bay fill from the original T. Jack Foster development, and that changes foundations, moisture management, and permit requirements from day one. Call us at (936) 259-2607 for a free written estimate.
Why Foster City Homes Are Different
Foster City’s entire residential footprint was purpose-built from the late 1960s through the mid-1980s on hydraulically dredged bay mud and compacted fill. No neighboring Peninsula city shares this liquefaction-prone substrate at the same scale. Standard prescriptive foundation tables simply don’t apply here, which means even modest structural permits routinely trigger a geotechnical soils report requirement from San Mateo County, something rarely encountered for comparable work in San Mateo, Belmont, or Redwood City.
The uniform wood-frame housing stock, now 40 – 55 years old, faces chronic pressure from salt-laden fog and persistent marine humidity off the open bay. Homes along or adjacent to the 19-mile lagoon system see accelerated fastener corrosion, exterior finish degradation, and wood rot in framing and substructures. Factor in FEMA Zone AE flood coverage across much of the city, sea-level elevation behind perimeter levees, and engineered footings or deep piers become standard considerations rather than exceptions.
Our Main Foster City Services
Most calls we field from Foster City homeowners center on two needs: comprehensive project management for complex builds, and room-specific transformations that respect the original structure’s constraints.
General Contractor in Foster City
We coordinate the full scope, from soils reports and engineered drawings through final inspection, for projects where bay fill conditions demand specialized foundations or flood-zone compliance. Our crews understand the San Mateo County geotechnical requirements that trigger on Foster City jobs, and we build that timeline and cost into your written price from the start. General Contractor in Foster City covers our full build-management approach.

Bathroom Remodeling in Foster City
Lagoon-adjacent bathrooms in Foster City often reveal hidden moisture damage in subfloors and wall framing once we open the walls. We spec cement board substrate (the moisture-resistant layer behind your tile) and vapor-barrier assemblies that account for salt-air infiltration, not just standard humidity. Bathroom Remodeling in Foster City details our process.

Kitchen Remodeling in Foster City
Kitchens in these 40 – 55-year-old homes typically need electrical service upgrades, plumbing reconfiguration, and structural assessment before cabinet layout changes. We source KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, and Kohler and Moen fixtures with warranties that layer behind our own. Kitchen Remodeling in Foster City walks through the full process.

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 Foster City
Whole-home remodeling in Foster City means working within a remarkably uniform generation of wood-frame homes now entering their fifth decade, all sitting on compressible bay fill with among the highest seismic liquefaction risk ratings in San Mateo County. We regularly encounter differential settlement, outdated electrical panels, and moisture-compromised substructures that aren’t visible until demo begins. Home Remodeling covers our broader approach, but Foster City’s conditions demand specific expertise.
In the Edgewater and Beach Park areas, we see salt-air corrosion in exterior framing members that inland contractors might misdiagnose as simple water damage. The lagoon system’s 19 miles of shoreline create microclimates where standard material specs fail prematurely. Our written prices account for these discoveries before work starts, not after.
Home Remodeling Contractor
Signs you need it
Your floors slope toward the lagoon side, doors stick seasonally, or you’ve spotted cracks in drywall that reopen after patching, all common in Foster City’s settling fill.
What it costs in Foster City
Whole-home remodels typically run $45,000 – $130,000, with ADU construction at $90,000 – $220,000 and garage conversions at $30,000 – $80,000.
How we do it
We start with a geotechnical assessment when structural work is planned, engineer footings or piers as needed, then sequence mechanical, electrical, and plumbing upgrades before finishing work begins.
Whole House Remodel
Signs you need it
Your home still has original aluminum wiring, single-pane windows, and a floor plan that doesn’t match how you actually live 50 years after construction.
What it costs in Foster City
Whole-house projects fall in the $45,000 – $130,000 range, with kitchen and bath components at $14,000 – $45,000 and $9,000 – $28,000 respectively.
How we do it
We phase the work to keep you living on-site when possible, starting with structural and systems upgrades, then moving room by room with dust containment and daily cleanup per The Kingswell Way.
What Home Remodeling Costs in Foster City
| Item | Typical range in Foster City |
|---|---|
| Whole-home remodel | $45,000 – $130,000 |
| Kitchen remodel | $14,000 – $45,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Home addition | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
| Garage conversion | $30,000 – $80,000 |
Do you pull permits for whole-home remodels in Foster City?
Yes, we handle all San Mateo County permits, including the geotechnical soils reports that Foster City’s bay fill substrate routinely triggers for structural work. Our written price includes permit fees and inspection scheduling so nothing surprises you mid-project. Call (936) 259-2607 to review what your specific job requires.
Will the price change once demolition starts?
No. Our written price is fixed before any work begins, and we build contingency for typical Foster City conditions, such as soft-substrate foundation adjustments or moisture-damaged framing, into that number. The Kingswell Way requires the price you sign is the price you pay. Call (936) 259-2607 for a written quote you can hold us to.
Brands We Service in Foster City
We install materials from recognized trade brands: KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, Kohler and Moen fixtures, James Hardie siding, and more. For accessory dwelling units and modern additions, we also work with our brands including Abodu, Cover, and Dvele. Most standard items are available through our Bay Area supply chain with typical lead times of 2 – 4 weeks.
Pricing for Remodeling Company in Foster City, CA
| Service | Typical range in Foster City |
|---|---|
| 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 in Foster City push toward the higher end when engineered footings, deep piers, or flood-zone elevation work is required by San Mateo County due to the bay fill substrate. Every homeowner receives a written, line-item price before any work starts, and that number does not change.
Neighborhoods We Serve in Foster City
We work across Foster City’s original master-planned neighborhoods, from lagoon-front homes to inland courts built on slightly firmer fill. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Foster City locally. Most appointments are available within 3 – 5 business days.
- Edgewater
- Beach Park
- Metro Center
- Foster City Boulevard corridor
- Sea Cloud and Marlin Cove
Service Area – Cities Near Foster City
Our crews work throughout the Peninsula and greater Bay Area. Homeowners in San Francisco, CA, San Jose, CA, Los Angeles, CA, and San Diego, CA can expect the same written-price standard, background-checked uniformed technicians, and 365-Day Done Right Promise that we bring to every Foster City job.
Serving Foster City, CA - Our Local Coverage Area
We’re based in the Foster City 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 Foster City
A live person answers our phone 24/7, and we typically schedule initial consultations within 3 – 5 business days. Your written estimate follows within 48 hours of our visit.
Many Foster City neighborhoods have active HOAs that review exterior changes before San Mateo County permit submission. We coordinate both layers of approval and build that timeline into your project schedule from the start.
Our 365-Day Done Right Promise covers all workmanship regardless of substrate conditions. If a repair fails inside the guarantee period, we return at no charge, no re-inspection fee, backed in writing on every project.
Call (936) 259-2607 to schedule your free estimate. We’ll give you a written price before any work starts, a real arrival window, and the 365-Day Done Right Promise in writing, because that’s The Kingswell Way.
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 Foster City Customers Say
"Gutted and redid the master bath. They gave me a schedule and actually stuck to it. Any time there was a choice to make they called me instead of guessing. Love the result."
- Kayla Benton"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







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