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 Foster City
When you’re planning a remodel or addition on a Foster City home, you need a general contractor who understands what this city is actually built on. Seaside Contractors has been managing full-scope residential projects across the 94404 corridor, from lagoon-edge ranchers to the townhome clusters near Redwood Shores, and we know what opening up a 1960s-era Foster City wall reveals. Call (833) 589-8103 and we’ll walk your project from first inspection to final walkthrough, one accountable team holding the whole thing together.
Why Seaside Contractors Is Foster City’s Preferred General Contractor Company
Homeowners in Foster City keep calling us for the same reason: we plan for what this city’s geology and housing stock actually throw at a remodel. The original 1960s and 1970s ranch homes that dominate the planned neighborhoods off Hillsdale Boulevard were built on dredged bay fill, and half a century of settling means walls, floors, and framing don’t always sit where the original drawings say they do. Our team, led by Glen Sorrento, treats that as the starting point of every estimate, not a surprise line item later.
Foster City customers tell us the same thing after every project: they knew what was approved, what was changed, and what it cost before the work happened. That discipline comes from writing allowances and inspection-triggered upgrade paths into the contract up front. We quote Foster City jobs with the assumption that a permit will be pulled and an inspector will sign off, because that’s how the work actually goes here.
Styles & brands we work with
Licensed General Contractor in Foster City
A Licensed General Contractor in Foster City is the difference between a remodel that accounts for engineered fill and groundwater and one that pretends the house sits on solid ground. When you’re adding square footage off a lagoon-side wall or opening a kitchen in a 1972 ranch, the permit process brings code upgrades with it: structural shear requirements, wiring and grounding, waterproofing membranes where bay fog has been working on the sill plates for decades. We hold the license, we pull the permits, and we manage the inspection schedule so the sign-off happens in sequence with the work, not after the drywall’s up.
Permit-Ready Site Evaluation
Before we price anything, we walk the site with the plans and look at what the city will flag. Foster City building officials know exactly which streets sit on the oldest fill, and they’ll ask about foundation condition, lateral bracing, and drainage on any addition. We price the evaluation and the likely remediation into the contract, so the first change order doesn’t come as a shock.
Open-Wall Code Upgrades
Once walls are open, electrical and plumbing runs get checked against current code, and on a 1970s Foster City home, that almost always means rewiring or reframing. We write allowances for that work before demolition starts. The inspector sees rough-in work while the walls are still open, then we close them only after the sign-off.
Residential General Contractor in Foster City
A Residential General Contractor in Foster City manages the full project sequence: demo, framing, rough-in trades, waterproofing, finishes, and the final punch list with the building department. On a kitchen remodel in one of the lagoon-adjacent neighborhoods around Sea Cloud Park, that means coordinating cabinet install with the countertop fabrication schedule and making sure the Schluter waterproofing goes in before the tile does. One contractor. Every trade. We carry that whole sequence so the homeowner is never the one chasing a sub.
Kitchen and Bath Packages
We spec full kitchen and bath packages using cabinetry lines like KraftMaid and Wellborn, countertops from Cambria, Silestone, or Caesarstone, and plumbing fixtures from Toto, Kohler, or American Standard. The price range for a Foster City kitchen remodel runs $14,000 to $45,000 depending on cabinet tier, countertop material, and how much structural work the opening reveals. A bathroom remodel typically lands between $9,000 and $28,000.
Room Additions and ADUs
Adding a room or building an ADU in Foster City means footings set into engineered fill that’s been consolidating since the Johnson administration. We’ve done the dewatering, the compacted base prep, and the foundation detailing that this soil demands. Home additions run $45,000 to $130,000; ADU construction through our prefab partners like Abodu and Dvele runs $90,000 to $220,000 depending on factory spec and site conditions.
Trusted Brands We Service in Foster City
We’re not tied to a single supplier, which means your Foster City remodel doesn’t inherit a material that’s wrong for a marine-air environment just because it’s what the sub carries. We spec Toto fixtures where salt-air corrosion resistance matters, American Standard where budget and durability are the priority, Schluter systems behind tile in every wet area, and Sterling fixtures in secondary baths. We order direct from the supplier and coordinate delivery to your Foster City jobsite, so lead times don’t stall a project that’s already got a permit clock running.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Foster City Homes
- Original aluminum branch wiring from the 1960s and 1970s. Once a wall is open and the inspector sees it, rewiring is mandatory. We write the allowance before demolition, not after.
- Sill plates and framing wicking moisture from bay fog and lagoon air. The marine layer sits on Foster City for months at a time, and the walls that face the water fail first. We inspect for rot and termite damage before we quote interior finishes.
- Undersized framing and outdated shear bracing on the old fill houses. The 1960s ranch stock wasn’t built to current lateral-load standards. Any structural wall we open triggers the upgrade.
- Failed waterproofing at shower pans and tub surrounds. On the lagoon-edge homes especially, the moisture load is higher than the original builder anticipated. Schluter membranes and proper slope detailing are non-negotiable.
Pricing for General Contractor in Foster City, CA
Here’s the honest range, because pricing that pretends Foster City houses behave like solid-ground tract homes serves nobody. A kitchen remodel runs $14,000 to $45,000. A bathroom remodel lands between $9,000 and $28,000. A home addition starts around $45,000 and can reach $130,000 depending on foundation work and square footage. An ADU runs $90,000 to $220,000. Window replacement sits between $4,500 and $15,000, and the spread there is driven by impact rating and frame material, both of which matter near the water. Every quote includes a free walkthrough, written allowances for code-triggered work, and a change order process that requires your signature before any unbudgeted dollar gets spent. Call (833) 589-8103 to schedule your free estimate.
| Project Type | Foster City Price 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 |
| Window Replacement | $4,500 – $15,000 |
We Also Serve Cities Near Foster City
Our team regularly works across Foster City and the surrounding Peninsula. We serve homeowners in Redwood Shores, San Mateo, Belmont, and Highlands-Baywood Park, with the same permit-first, soil-aware approach we bring to every 94404 project. If you’re in a neighboring city planning a remodel or addition, the same team handles it end to end.
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
Because the original 1970s wiring, framing, and waterproofing don’t meet current code, and the first quote from a contractor who hasn’t opened anything won’t include it. On a lagoon-edge Foster City ranch, we’ve opened a kitchen wall and found original aluminum branch wiring plus a stud bay that had been wicking bay fog moisture for decades. We stopped, brought the inspector in, wrote a change order for the reframe and rewiring, and only then closed it up. That’s the right sequence, and it costs more than the quote that pretends the wall is fine. Call (833) 589-8103 to get an estimate that includes the real scope.
Yes. The entire city sits on dredged bay fill from the 1960s and 1970s, and half a century of settling means floors and walls have moved. Where a remodel connects to existing structure or an addition extends the footprint, we account for high groundwater, soil consolidation, and settlement. It affects foundation detailing, slab ties, and sometimes framing alignment. This is why we price Foster City work with the soil in the contract, not as a discovery later.
We pull every permit before work starts and sequence the inspections so the city sees rough-in electrical, plumbing, and framing while walls are open. Foster City building officials flag specific issues on the older fill parcels, and we plan the sign-off path into the schedule. Your change order gets signed before any inspection-triggered work happens. That’s part of our General Contractor team’s core discipline.
Salt-laden marine air corrodes standard fasteners and degrades some finishes faster than inland locations. On lagoon-front homes, we spec stainless steel or coated fasteners in exterior and high-moisture applications, and we use vapor-resistant membranes at any wall that faces the water. The windows and doors matter too; marine-grade frames and hardware are worth the upgrade when the alternative is a five-year replacement cycle.
A mid-range kitchen in Foster City runs $14,000 to $45,000. A bathroom is $9,000 to $28,000. A home addition starts at $45,000 and goes to $130,000. An ADU runs $90,000 to $220,000. Window replacement is $4,500 to $15,000. These ranges assume a permit is pulled and code-triggered upgrades are included. Call (833) 589-8103 for an exact quote, free of charge.
Written by Glen Sorrento, Owner at Seaside Contractors, serving Foster City and the greater Bay Area.