







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across South San Francisco
Most South San Francisco homeowners calling a General Contractor are standing in a kitchen with 1960s wiring, a bathroom with rot behind the tile, or a garage they want turned into an ADU. We know those homes. South San Francisco’s mid-century tracts along El Camino Real and up into the Westborough hills share a specific set of conditions: Eichler-era post-and-beam framing, legacy knob-and-tube remnants, and additions that were never permitted. A kitchen remodel here typically runs $16,520 – $53,100, and a bathroom remodel $10,620 – $33,040. But the number that matters most is the one you see before demo starts. Call (803) 680-2547 and we’ll put a written price in your hands before a single tool comes off the truck.
Why Mason Remodeling Is South San Francisco’s Preferred General Contractor Company

We’ve walked enough South San Francisco homes to know what’s behind the walls before we open them. That matters when you’re pricing a project in Sunshine Gardens, Terrabay, or the older Alta Loma tract. Mid-century construction here was built fast and tight, which means load paths don’t always match what the original plans show. We bid for that reality, not for a best-case scenario.
South San Francisco homeowners tell us the same thing: they want to know who’s walking through the door. Every Mason Remodeling crew member follows the Threshold Standard. That means background-checked, identity-verified, uniformed, and introduced to you by name and photo before the visit. Our lead arrives with a photo ID badge at your door. No surprises, no strangers.
Isaac Pruett leads our team with a simple rule: the written price comes first. Always. Not after the walkthrough, not after the demo. Before any work starts, on every project, every time. That’s not a promotion. It’s how we’ve operated since 2004 as part of the Threshold Group family of home-service companies.
Styles & brands we work with







Residential General Contractor in South San Francisco
A residential General Contractor in South San Francisco coordinates the full build: demo, framing, electrical, plumbing, tile, finish carpentry, inspections, and sign-off. What you’re really hiring is someone who knows the city’s permit counter, what the inspectors look for, and which subcontractors actually show up on the Peninsula. When a South San Francisco homeowner takes on a kitchen remodel, the permit package typically needs to account for structural verification if any wall moves, plus electrical and plumbing rough-in sign-offs before drywall closes. The work itself usually lands between $16,520 and $53,100, driven by cabinet grade, countertop material, and what demo uncovers.
Permit-Ready Project Planning
Before we submit anything to the city, we pull the property’s permit history. South San Francisco has thousands of homes built between 1950 and 1975, and a surprising number carry open permit histories or unpermitted additions from decades ago. We map that before we bid, so the number we give you reflects what the city will actually require, not what a quick walkthrough suggests.
Hidden Conditions, Honest Allowances
We set allowances as real line items. If your contract says $2,360 – $7,670 for countertops, we tell you exactly what that buys. When a homeowner chooses Cambria or Caesarstone over basic porcelain, that’s a decision made before the slab is cut, not a surprise invoice at the end. You’ll see the price difference in writing before you commit.
Hire a General Contractor in South San Francisco

When you hire a General Contractor in South San Francisco, you’re buying a process, not just labor. The contractor is the one pulling permits, scheduling inspections, managing the sub trades, and standing behind the final product. A home addition in South San Francisco runs $53,100 – $153,400. An ADU construction project runs $106,200 – $259,600. Those are wide ranges because the scope varies enormously: a detached ADU behind a Terrabay home involves foundation, utility connections, and separate meter work, while a garage conversion in an older tract near Linden Avenue might only need insulation, drywall, and a bath rough-in.
What the Contract Should Actually Say
Read any contract you sign and look for one thing: are allowances fixed or itemized? A tile allowance quoted as “basic porcelain” gets spent fast when you pick a real stone. We write allowances as dollar amounts tied to actual material grades, so you know before you sign what your $945 – $2,950 backsplash budget actually covers.
Who Shows Up at Your Door
Every Mason Remodeling technician is introduced by name and photo before arrival. Our crews wear clean marked uniforms and carry photo ID badges at the door. If you’re home alone, or you have young kids, that’s not a nicety. It’s the reason you can let us in without hesitation.
Trusted Brands We Service in South San Francisco
South San Francisco homeowners often ask about modern prefab options like Abodu, Cover, or Dvele, especially when planning an ADU. We’ll work alongside those systems when they make sense for your lot, and we stock and install professional-grade materials across the board: KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone surfaces, Kohler, Moen, and Toto fixtures. We carry these lines because they hold up in coastal Bay Area air, and because our South San Francisco customers can see and touch samples before committing.
See the difference
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AfterCommon General Contractor Problems We See in South San Francisco Homes
- Non-permitted additions from decades past. A South San Francisco homeowner buys a house, plans a remodel, and the permit pull reveals a family room or extra bath that was never signed off. We clear the history and fold the correction into the scope before demo starts.
- Legacy wiring that fails rough-in inspection. Older homes near Westborough and Alta Loma often still carry ungrounded circuits. Bringing them to current code adds cost, and we build that into the bid so you’re not surprised when the inspector flags it.
- Load-bearing walls hidden behind drywall. Sunshine Gardens ranches and similar mid-century plans look open-concept, but the framing tells a different story. We verify load paths with a structural engineer before we cut anything.
- Allowance shock on finishes. A contract that says “tile allowance” without specifying the grade is a blank check for change orders. We price the exact material, then write it down.
Pricing for General Contractor in South San Francisco, CA
Here’s what real South San Francisco projects cost in today’s market. These are the numbers we quote, and they’re the numbers that hold.
| Project Type | Typical South San Francisco Range |
|---|---|
| Kitchen Remodel | $16,520 – $53,100 |
| Bathroom Remodel | $10,620 – $33,040 |
| Home Addition | $53,100 – $153,400 |
| ADU Construction | $106,200 – $259,600 |
What moves the number? Cabinetry grade is the biggest driver on kitchens. KraftMaid semi-custom runs higher than stock. Countertop material matters too: basic quartz starts around $2,360, while a Cambria slab can push past $7,670. On additions and ADUs, foundation work, utility runs, and lot access are the variables. We give you the written price before any work begins, and it stays the price. The 365-Day Done Right Promise backs every project: if something isn’t right within a year of completion, we make it right at no cost to you.
We Also Serve Cities Near South San Francisco
While this page focuses on South San Francisco, our crews regularly work in Brisbane, Daly City, San Bruno, and Millbrae. If you’re just over the line in San Bruno near the 380 corridor or up in the Daly City hills, we can help. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with local crews serving South San Francisco directly.
Serving South San Francisco, CA - Our Local Coverage Area
We’re based in the South San Francisco 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 South San Francisco
Yes. Any South San Francisco remodel that moves walls, alters plumbing or electrical, or changes the building envelope needs a city permit, and that’s not a corner you want to cut. The city’s inspection sign-off is what protects you when you sell the house, and it’s what catches the unpermitted work from previous owners before it becomes your liability.
Plan for 6 to 12 weeks from demo to final inspection, depending on cabinet lead time and what demo uncovers. South San Francisco’s permit office moves at its own pace, and we build that into the schedule. Demo week, rough-in inspections, drywall, finish carpentry, and countertop templating each take their own block of time. Call (803) 680-2547 for a written timeline on your specific project.
Because the original bid was based on a photo or a quick walkthrough instead of opened walls. In South San Francisco’s mid-century homes, subfloor rot, legacy wiring, and unpermitted framing show up the moment demo starts. A contractor who didn’t plan for that writes a change order. We bid for it up front, and our written price reflects the real conditions your home will present.
As specific dollar amounts tied to specific material grades. A countertop allowance should say “$2,360 – $7,670 for quartz, with Cambria and Caesarstone priced as upgrades.” A tile allowance should name the exact porcelain or ceramic grade. Any contract that says “allowance” without a number and a material spec is a contract designed to grow. We write it all down, every time.
Yes. South San Francisco allows ADUs on most residential lots, and we’ve built them from garage conversions to detached units. A garage conversion typically runs $35,400 – $94,400, while a full detached ADU runs $106,200 – $259,600. Both require separate utility planning and a full permit package. Call (803) 680-2547 to schedule a free estimate, and we’ll map the exact path for your lot.
Written by Isaac Pruett, Owner at Mason Remodeling, serving South San Francisco since 2004.










