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 Belmont
Finding a general contractor in Belmont who understands hillside construction, drainage, and the code upgrades older homes trigger isn’t easy. Most contractors in San Mateo County work flat lots. Belmont isn’t flat. That’s the difference, and it’s why we start every Belmont project with a geotech report and drainage plan, not a framing schedule. If you’re planning a kitchen remodel, bathroom remodel, room addition, or ADU in Belmont, call (833) 589-8103 to schedule a free estimate with a contractor who knows the canyons.
Why Seaside Contractors Is Belmont’s Preferred General Contractor Company
Homeowners in Belmont call us because we speak the language of their lots. The clay-heavy soils along the western slope, the fog that settles over Ralston Avenue in the morning, the 1950s ranchers with cloth wiring and undersized framing. We see it every week. When we walk a Belmont property, we look for what’s hidden: retaining walls that have been quietly failing, drainage that sends water toward the foundation, crawlspaces that hold moisture all winter. That’s what a General Contractor team should do before anyone talks about countertops or cabinets.
Our work in Belmont spans kitchen and bath remodels, whole-home renovations, room additions, and ADU construction, including prefab units through Abodu, Dvele, and Boxabl. We carry the same accountability from first inspection to final walkthrough. One contractor, every trade, every permit, every inspection.
Styles & brands we work with
Remodeling Contractor in Belmont
A remodeling contractor in Belmont handles projects that start with what’s behind the drywall, not what goes on top of it. That’s not how every contractor works. Here, it has to be. Homes built in the 1950s and 1960s along streets like Tahoe Drive and Cipriani Boulevard carry wiring, framing, and waterproofing that predates current code by decades. What that means for you: a kitchen or bathroom remodel in Belmont runs $14,000 to $45,000 for kitchens and $9,000 to $28,000 for bathrooms, and the final number depends heavily on what inspection turns up once walls are open.
Kitchen and Bath Packages
We spec cabinetry through KraftMaid and Wellborn, countertops through Cambria, Silestone, and Caesarstone, and plumbing fixtures through Kohler, Toto, and Grohe. You choose the material tier. We handle the install, the permits, and the inspection. No coordinating three different subcontractors.
Whole-Home and Structural Work
When a Belmont homeowner adds a primary suite or expands a split-level, the project usually triggers structural upgrades. We write allowances into the contract for electrical, plumbing, and framing surprises, and we price any change order in writing before we touch a stud. The homeowner approves it. Then we move.
Licensed General Contractor in Belmont
A licensed general contractor in Belmont is responsible for the entire project: permits, engineering, framing, waterproofing, finish work, and final inspection. That scope matters more here than in flatter cities. A home addition in Belmont runs $45,000 to $130,000. An ADU runs $90,000 to $220,000. Those numbers include what flat-lot contractors leave out: geotech review, retaining walls, drainage corrections, and the code upgrades that open walls reveal.
Permits and Plan Check
Belmont’s building department reviews hillside projects with a close eye on soil stability and drainage. We prepare the drawings, pull the permits, and walk the inspections. Homeowners don’t chase the plan checker. We do.
ADU and Prefab Construction
Through partnerships with Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, and Tuff Shed, we can deliver a sloped-lot ADU without the drainage problems a flat-lot contractor creates. The unit arrives engineered. We handle the site work, foundation, and utilities.
Trusted Brands We Service in Belmont
Belmont homeowners get access to material partnerships most local contractors don’t carry. For a bathroom remodel on a stucco tract home off Alameda de las Pulgas, we might spec a Toto toilet, a Schluter waterproofing system behind the shower, and an American Standard tub. The Schluter membrane is the behind-the-wall detail that keeps moisture out of the framing for decades. That’s the work you don’t see until something fails. We spec it correctly the first time. We’ll match the material to the project, not to our markup.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Belmont Homes
- Cloth wiring and undersized framing in 1950s ranchers. Opening walls on a Tahoe Drive rancher to add a primary suite, we found original cloth-insulated wiring and framing that had been undersized for a prior deck load. We wrote a change order to upgrade to current code and replace the subfloor, and the homeowner approved it in writing before we touched a stud.
- Failed waterproofing at retaining walls on hillside lots. The marine-layer moisture and clay soils along Belmont’s western edge work against any wall that wasn’t built with proper drainage behind it. When we excavate, we find the evidence. If you skip the pre-construction inspection, you find it as a change order after excavation.
- Steep driveways and poor drainage on canyon properties. Homes off Ralston Avenue and up into the canyons often send water toward the garage or foundation. We correct the grade and drainage before framing starts, not after the floor is in.
- Vague allowances that become surprise invoices. A contractor who writes “electrical as needed” into a bid is planning to surprise you. We write specific allowances for electrical and plumbing. If outdated wiring triggers a full rough-in replacement, that’s priced and approved before the electrician starts.
Pricing for General Contractor in Belmont, CA
Here’s what Belmont homeowners should expect to pay for the most common projects. These are the actual ranges we’ve contracted in 94002, not national averages.
| Project | Belmont 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 |
What moves a Belmont kitchen from $18,000 to $40,000 is almost always the same thing: what inspection reveals behind the walls. Cloth wiring, asbestos, failed waterproofing, undersized joists. We write allowances for that at the contract stage and price any change order in writing before work begins. The estimate is free. Call (833) 589-8103 and we’ll walk the property and give you real numbers.
We Also Serve Cities Near Belmont
Seaside Contractors works across the Peninsula, including General Contractor in Belmont and the surrounding communities. We regularly schedule estimates in San Carlos, Highlands-Baywood Park, San Mateo, and Redwood Shores. If you’re in one of those cities and planning a remodel or addition, the same team handles the work.
Serving Belmont, CA — Our Local Coverage Area
We’re based in the Belmont 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 Belmont
Belmont’s western canyon slopes sit on clay-heavy soils that shift with winter rain and marine-layer moisture, so the building department usually requires a geotechnical report before plan check. The report determines whether you need engineered retaining walls or drainage corrections before any addition can pass. We sequence geotech and drainage first, then framing. That’s the correct order for Belmont. Call (833) 589-8103 for an estimate that accounts for it upfront.
We write specific allowances into the contract, then price any surprise in writing before we proceed. When we opened a 1950s rancher on Tahoe Drive to add a primary suite and found cloth wiring and undersized framing, we wrote a change order, the homeowner approved it, and only then did we touch a stud. No surprise invoices. Call (833) 589-8103 to talk through how allowances work.
Any remodel that opens walls, moves plumbing, or changes structure triggers electrical, plumbing, and building permits, and Belmont’s inspectors will hold you to current code. That often means upgrading wiring, adding GFCI protection, and correcting framing. We pull the permits, schedule the inspections, and walk them with the inspector. You get a signed-off job. Call (833) 589-8103 for the specifics on your project.
Yes, because we start with the slope, not the slab. We grade for drainage, spec the retaining wall if needed, and then place the unit. A flat-lot contractor from San Mateo or Redwood City often ignores clay soils and steep driveways, and the result is foundation moisture and drainage failure after the ADU is in. Our ADU work in Belmont runs $90,000 to $220,000. Call (833) 589-8103 to scope your lot.
A stucco tract home on the flats, like those off Alameda de las Pulgas, typically needs interior work: rewiring, kitchen and bath updates, maybe a room addition. A custom hillside house in the canyons needs geotech, drainage, retaining walls, and foundation work before any interior remodel. We handle both, which is the point of one General Contractor managing the whole thing. Call (833) 589-8103 to schedule a walkthrough.
Written by Glen Sorrento, Owner at Seaside Contractors, serving Belmont since our founding.