Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Foster City
Planning a kitchen remodel, bathroom update, or room addition in Foster City means working around a factor most contractors never mention: your home sits on engineered fill over former Bay marsh. That single fact changes how your foundation gets inspected, how your permits are priced, and what your final bid should include. Mason Remodeling builds Foster City projects with that reality priced in from day one, not discovered halfway through demolition. Call (803) 680-2547 for a free estimate from Isaac Pruett and our Foster City crew.
Why Mason Remodeling Is Foster City’s Preferred General Contractor Company
Foster City homeowners call us because we show up with a written price before any work starts. That’s not a promotion. It’s how we’ve operated since 2004 as part of the Threshold Group family of home-service companies, and it means the number on your bid is the number you pay unless you change the scope yourself. Every crew member who walks through your Foster City door is background-checked, identity-verified, and introduced to you by name and photo before the visit. They arrive in a clean, marked uniform and show a photo ID badge at the door. We call it the Threshold Standard, and it matters whether you’re home alone, have young kids, or just want to know exactly who’s walking your hallway.
Our Foster City work carries a 365-Day Done Right Promise: if something isn’t right within a year of completion, we make it right at no cost to you. A live person answers our phone 24 hours a day, 7 days a week, including weekends and holidays. No call trees, no voicemail loops. When you call about a Foster City project, you reach a person who can actually help.
Styles & brands we work with
Construction Company in Foster City
A Construction Company in Foster City handles the structural side of your project: permits, foundation work, framing, load-bearing walls, and everything the city inspects before finish work begins. Home additions here run $45,000 to $130,000, and garage conversions typically land between $30,000 and $80,000, depending on whether you’re adding a bathroom or just finishing the space. On Foster City’s engineered fill, any addition or structural wall change triggers a geotechnical review, and the foundation is usually a mat slab or piers rather than a simple footing. That’s a cost line we build into your bid from the start.
Permits, Soil Reports, and Foundations
Every structural permit in Foster City requires a below-grade soil report because the whole city sits on former Bay marsh. You’re paying for that report either way. The difference is whether your contractor priced it in the original bid or surprises you with it after demo starts. We include it, schedule it, and build the foundation spec around what the report actually says.
Scope, Allowances, and Change Orders
On a whole-home or addition project, tear-out often reveals what’s behind 1960s and 1970s Fair Housing-era drywall: original cast-iron drains, galvanized supply lines, or framing that predates current code. We write allowances for tile, fixtures, and finishes into the scope of work, and every change order gets documented in writing before it’s approved. You know what’s covered, what’s variable, and what a change costs before the saws start.
Remodeling Contractor in Foster City
A Remodeling Contractor in Foster City coordinates the full interior transformation: demolition, plumbing, electrical, tile, cabinetry, countertops, and the finish work that turns a construction site back into your kitchen or bathroom. A kitchen remodel in Foster City runs $14,000 to $45,000, and a bathroom remodel typically costs $9,000 to $28,000. Smaller kitchens can start around $9,000, and walk-in shower installations run $4,500 to $12,000. The spread comes down to what’s behind the walls and what level of finish you’re choosing.
The Scope-to-Punch-List Sequence
A Foster City remodel follows a real calendar, not a sales pitch. Demolition first. Then rough-in plumbing and electrical, which trigger the city’s rough-in inspection. Then insulation, drywall, tile waterproofing, and the pre-tile inspection. Then finishes, fixtures, and the final sign-off. Foster City inspection scheduling runs behind other Peninsula cities, so we build that buffer into your timeline instead of pretending it doesn’t exist.
Marsh Soil and Interior Remodels
Foster City was built on engineered fill over former Bay marsh, so even a bathroom remodel can uncover slab movement. We’ve seen 3/4-inch drops across a single bathroom floor. That’s why we check subfloor elevations during demo and correct them with self-leveling underlayment before tile goes down. It’s a small step that prevents cracked grout and ponding water a year later.
Trusted Brands We Service in Foster City
Foster City homeowners get access to specification-grade materials through our direct partnerships: KraftMaid and Wellborn cabinetry, Cambria and Silestone surfaces, Kohler and Moen fixtures, GAF and CertainTeed roofing, and Belgard hardscaping. We stock common replacement parts for these brands locally, which cuts lead times on Foster City jobs. If your remodel calls for a specific Kohler valve or a matching KraftMaid door style, we can pull it without waiting on a distributor.
Some Foster City homeowners also ask about prefab or factory-built options from companies like Abodu, Cover, and Dvele. Those systems have their place, but they don’t solve Foster City’s foundation and permit requirements. The soil report and engineered-fill foundation work still apply, and that’s work a local general contractor handles directly.
See the difference
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AfterCommon General Contractor Problems We See in Foster City Homes
- Unpriced geotechnical work. Contractors from Redwood City or San Mateo bid Foster City jobs without the soil report and engineered-fill foundation design. The change order for pier depth or slab reinforcement lands mid-project, and the homeowner is stuck paying it.
- Inspection scheduling surprises. Foster City’s pre-tile and rough-in inspection calendar runs slower than neighboring Peninsula cities. A contractor who treats inspections as a same-week formality pushes your punch list out by weeks, not days.
- Slab movement behind old tile. At a 1970s ranch on Gull Avenue backing the lagoon, our crew rebuilt a hall bathroom with a new Schluter shower pan, Moen posi-temp valve, KraftMaid vanity, and Silestone top. Demolition uncovered a 3/4-inch slab drop that had let water pond under the old tile. We poured self-leveling underlayment before setting tile and passed Foster City’s pre-tile waterproofing inspection on the first visit.
- Load-bearing walls overlooked. Opening the wall between a galley kitchen and dining room in a 1960s Foster City ranch is a structural permit, not a cabinet adjustment. Skipping that check turns a $14,000 kitchen refresh into a structural remediation bill.
Pricing for General Contractor in Foster City, CA
Here’s what Foster City work actually costs, based on the projects we’ve bid and built in the area.
| Project Type | Typical Foster City 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 |
| Garage Conversion | $30,000 – $80,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Window Replacement | $4,500 – $15,000 |
| Roof Replacement | $8,000 – $20,000 |
What moves the number? Two things drive almost every Foster City bid: what the soil report says and what demolition uncovers. A project with a clean geotech report and good bones stays at the bottom of the range. A kitchen with slab deflection under the old tile or a bathroom with 50-year-old cast iron will land higher. We write that into the scope before we start, so the price you approve is the price you pay unless you change the work yourself. Call (803) 680-2547 for an exact written estimate. It’s free, and it comes with the geotechnical line item already priced at the correct Foster City rate.
We Also Serve Cities Near Foster City
Our crews serve Foster City daily and regularly take on projects in the surrounding region, including Los Angeles, San Diego, San Jose, and San Francisco. If you’re outside Foster City proper, our General Contractor team can confirm coverage for your neighborhood before you schedule. We coordinate dispatch and scheduling from our San Francisco Bay Area office, and Foster City jobs are always staffed by local crews who know the city’s inspection quirks and soil conditions. For more on our work across the area, see General Contractor in Foster City.
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 General Contractor in Foster City
Yes, for any structural work in Foster City, including additions, foundations, load-bearing wall changes, and garage conversions. Foster City sits on engineered fill over former Bay marsh, and the city requires a below-grade soil report for every structural permit. The report typically costs a few thousand dollars and adds one to two weeks to the front of your project. We schedule it as part of the bid, so it’s never a surprise line item after demo starts. Call (803) 680-2547 to get a written estimate that includes the geotech work at the Foster City rate.
A Foster City kitchen remodel typically runs $14,000 to $45,000. The bottom of the range covers a cosmetic refresh: cabinet refacing or budget-friendly cabinet installation, a new countertop, and a backsplash. The top covers a full gut: new cabinet runs, structural work if you’re opening a wall, plumbing and electrical relocation, new flooring, and mid-to-high-end finishes. The single biggest cost driver is whether the galley wall is load-bearing, which in most 1960s and 1970s Foster City ranches it is. Call (803) 680-2547 for a line-item written quote.
Foster City building permit review typically runs two to six weeks for a remodel, depending on scope and whether the soil report triggers additional review. Inspections, including rough-in and pre-tile waterproofing checks, run on the city’s calendar, which is typically booked out further than neighboring Peninsula cities. We schedule inspections in sequence with the work so that a slow inspection calendar doesn’t stall your timeline. Call (803) 680-2547 and we’ll walk you through the permit path for your specific project.
An allowance is a placeholder dollar amount for finishes you haven’t selected yet, like tile, flooring, or fixtures. In Foster City remodels, especially on homes from the 1950s through 1970s, allowances also cover what demolition might reveal behind the walls, such as original cast-iron plumbing or slab unevenness. We write allowances in plain dollar figures, and any amount over or under the allowance is documented as a written change order before we proceed. You never pay a verbal estimate that grows at the end. Call (803) 680-2547 for a bid with allowances spelled out line by line.
No, and you should be wary of any Foster City contractor who says they can. Planned remodels, additions, and kitchen or bath projects require permits, and Foster City’s permit and inspection calendar doesn’t bend for a same-week start. That’s not a delay we cause; it’s the city’s process, and it protects your home. We give you a realistic calendar up front and keep you moving through it. For a real timeline for your Foster City project, call (803) 680-2547.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Foster City since 2004.
