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 San Mateo
General contracting in San Mateo is not a paint-and-primer job. The bayfront air in the 94401 and 94403 flats eats unprotected steel, and the soft bay mud under much of the flatland means foundations get engineered, not guessed. We build to that reality from day one. Brookside Contractors serves San Mateo homeowners full-time, from 94401 near downtown through 94402, 94403, and 94404. Call (833) 725-3508 for a free estimate on your remodel, addition, or exterior project.
Why Brookside Contractors Is San Mateo’s Preferred General Contractor Company
We earn the call because we show up knowing what the inspection will flag before the inspector arrives. San Mateo planning review is exacting, and the bayfront soils in parts of 94403 and 94404 are unforgiving. Our team has walked through enough planning counter reviews here to know where a second-story pop-up will stall if the setback sheet is sloppy.
Homeowners in San Mateo keep our number because we itemize everything in writing. All allowances, all change orders, all fastener specs. A roofer who quotes “galvanized” and installs electro-plated hardware on a Bay-side roof in 94404 is pricing a failure, not a roof. We don’t do that. Our local reputation is built on delivering the coastal-spec version of every job the first time, so the five-year walkthrough doesn’t reveal rot.
Styles & brands we work with







Construction Company in San Mateo
A construction company doing honest work in San Mateo needs to understand something most out-of-area builders don’t: much of the flatland toward the Bay sits on engineered fill and soft bay mud in liquefaction-prone zones. So a straightforward addition in the 94403 flats can trigger geotechnical review and deeper footings than anyone budgeted for. We plan for that on the front end, not as a mid-project surprise. A home addition in San Mateo typically runs $45,000 – $130,000, and the foundation engineering that the flatland demands is a real line item in that range.
Bayfront Foundation Work
When we price a San Mateo addition, we start with soil, not square footage. That means reviewing the geotech report, sizing footings for engineered fill, and waterproofing at the level the high water table requires. This is the work that protects the whole structure.
Structural Scope and Permit Coordination
We carry a job from demo through drywall, and we pull every permit, schedule every inspection, and close every correction. San Mateo’s planning review on tight lots, especially 94402 and 94403, moves at its own speed. We sequence the work around it so your draw schedule is not the thing that stalls.
Remodeling Contractor in San Mateo
A remodeling contractor in San Mateo inherits what the 1940s and 50s builders left behind: single-story ranches and Eichler-influenced homes on 5,000 – 6,000 sq ft lots with old wiring, pier-and-grade floors, and framing that has spent sixty years in bay air. Remodeling here is not cosmetic. It is selective demolition plus structural repair plus the finishes you actually care about. A kitchen remodel in San Mateo typically runs $14,000 – $45,000; a bathroom remodel runs $9,000 – $28,000.
Whole-House Gut and Rebuild
We handle down-to-studs rebuilds in the 94402 and 94403 flats, where owners are systematically buying older homes and bringing them into this decade. That means new shear walls, new electrical, new insulation, and new waterproofing at the foundation line, done in the right order.
Tight-Lot Additions and Pop-Ups
On small San Mateo lots, going up is often smarter than going out. We design and build second-story additions that respect setback requirements and neighbor sightlines, because San Mateo planning review will check both.
Trusted Brands We Service in San Mateo
Our clients get a vetted brand roster, not a default spec. That includes Belgard for hardscaping, Techo-Bloc for pavers, and Unilock for retaining walls and patios that stand up to the Bay’s winters. When a San Mateo homeowner wants a paver patio with sealed joints and a base that won’t heave in saturated fill, we match the product to the project. Your project, your brands.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in San Mateo Homes
- Corroded original fasteners in bayfront homes. Galvanized nails and plain-steel hangers in 70-year-old roof framing are often rusted thin from marine air. We spec hot-dip galvanized and stainless hardware on every rebuild.
- Shallow footings on engineered fill in 94403 and 94404. Out-of-area crews sometimes dig the minimum and pour. On soft bay mud, that foundation moves later, and the homeowner pays for it twice.
- Permit stalls from under-scoped setback sheets. Second-story pop-ups and additions in the 94402 flats face strict planning review. A permit package that lacks detailed setback plans sits on a desk while the homeowner’s timeline slips.
- Coastal-spec roofs installed with inland-spec parts. The right shingle with electro-plated nails is a warranty claim waiting for the fifth fog season. We write the fastener spec into the contract because that’s where the failure starts.
Pricing for General Contractor in San Mateo, CA
Here’s what we’re seeing in the San Mateo market right now. These are real working ranges, not teaser numbers.
| Project | Typical Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Roof Replacement | $8,000 – $20,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Vinyl Fence Installation | $3,500 – $9,000 |
| Aluminum Fence Installation | $4,000 – $10,000 |
What pushes a San Mateo job toward the top of a range: deep footings for bay mud, second-story engineering, marine-grade window frames, and permit complexity on small lots. What keeps it lower: a single-story remodel on stable ground with modest finishes. Call (833) 725-3508 for a free line-item estimate. We will show you exactly what the coastal-spec version of your job costs.
We Also Serve Cities Near San Mateo
Brookside Contractors works throughout the Peninsula. In addition to General Contractor in San Mateo, our team regularly serves Highlands-Baywood Park, Foster City, Belmont, and Hillsborough, where the same bay air and small-lot conditions shape the work.
Serving San Mateo, CA — Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
Coastal-spec work costs more because the fasteners, window frames, and foundation details are more expensive on day one. Hot-dip galvanized and stainless hardware, marine-grade aluminum frames, and deeper footings on engineered fill all cost more than the inland version. What homeowners in San Mateo should know is that the inland-spec job often fails within a decade of bay exposure, so the cheap spec becomes the expensive one. Call (833) 725-3508 for an estimate that shows the difference line by line.
Yes, often it does. Much of that flatland sits on engineered fill and soft bay mud in mapped liquefaction zones, and San Mateo’s building department wants a geotechnical report before it will approve deeper structural work. We budget for that review in the initial scope so the foundation does not become a surprise change order.
We specify hot-dip galvanized or stainless hardware on every roof we build or repair near the Bay, along with sealed joints on hardscape and marine-grade window frames where the exposure is direct. On the 1950s ranch in the 94403 flats where our crew found original galvanized nails rusted to pencil points, we re-spec’d the entire rough-in and walked the client through the change order before inspection.
Yes, we handle the full permit package, including detailed setback sheets and the structural drawings that planning review in San Mateo expects. We have taken enough small-lot pop-ups through the process in 94402 and 94403 to know where the review slows down and how to keep the draw schedule moving. Call (833) 725-3508.
Every allowance, every change order, every hardware spec is written into the contract before work starts. If San Mateo bay air forces a material upgrade mid-project, you will see it as a written line item with the reason, the new spec, and the cost, before we proceed. Free estimates are always line-itemed.
Written by Nate Burrell, Owner at Brookside Contractors, serving San Mateo and the Peninsula.