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 Hillsborough
Hiring a general contractor in Hillsborough means navigating the town’s own planning and design-review process, steep estate lots, and architectural expectations that leave no room for sloppy coordination. Gold Star Contractors manages the full scope: additions, whole-house remodels, detached ADUs, and exterior systems, all under one accountable team. We scope permitting, grading, tree protection, and material logistics before quoting, so you know the number before the first inspection. Call (833) 382-8544 for a free estimate and a written line-item quote.
Why Gold Star Contractors Is Hillsborough’s Preferred General Contractor Company
Hillsborough homeowners don’t have time for a contractor who learns the town’s rules on their dime. Our team has worked on gated estates along the western slope, on mid-century ranch remodels near the town center, and on hillside properties where drainage and retaining walls draw plan-check scrutiny. We know what the Hillsborough design-review board asks for and we prepare drawings, allowances, and schedules that clear it without stalling the draw schedule.
Noel Carranza leads each project as the single point of accountability. That means when you ask about a change order, a cabinet lead time, or an inspection sign-off, you get one answer, not five vendors pointing at each other. Our clients in Hillsborough are planning estate-scale work, and they expect discretion on the job site and precision in the paperwork. We deliver both.
We carry full general contracting scope across interior and exterior trades, and we partner with more than 50 manufacturer brands such as Schluter, Toto, and American Standard, so material selection sits in your hands, not in whatever a subcontractor has in stock.
Styles & brands we work with
Construction Company in Hillsborough
A construction company in Hillsborough takes on work that most towns never see: structural additions on sloping lots, seismic retrofit on mid-century estates, detached guest houses behind gates, and long private driveways that complicate every material delivery. This is not production framing. It’s custom residential construction where the town’s design-review process, tree-protection plans, and hillside drainage requirements shape the schedule and the price as much as the structure itself.
Estate-Scale Additions and Rebuilds
Home additions in Hillsborough run $45,000 to $130,000 depending on structural scope, foundation work, and how much of the existing roofline has to be matched. Homes built in the 1950s and 1960s often need seismic upgrades before an addition ties in, and we price that work honestly instead of burying it as a surprise.
Detached ADUs, Shops, and Outbuildings
Garage conversions in Hillsborough cost $30,000 to $80,000. Detached ADU construction runs $90,000 to $220,000. On acreage lots with long driveways and mature oak canopy, we build the equipment access, tree protection, and grading scope into the quote before the first footing is dug.
Remodeling Contractor in Hillsborough
A remodeling contractor in Hillsborough has to respect the original architecture while bringing mechanical, electrical, and finish systems up to the standard these estates demand. That means matching Mediterranean or Tudor detailing on an addition, routing new plumbing through mid-century framing, and specifying fixtures that belong in the house, not in a catalog.
Kitchen and Bath Remodels on Estate Homes
Kitchen remodels in Hillsborough range from $14,000 to $45,000. Bathroom remodels run $9,000 to $28,000. We specify Kohler and Toto fixtures, Schluter waterproofing systems, and cabinetry lines like KraftMaid and Wellborn, then install them with crews who know those products’ tolerances.
Whole-Home Renovations and Driveway Work
Whole-home remodels routinely involve exterior systems at the same time. Paver driveway installation on Hillsborough properties runs $7,000 to $18,000, often replacing long, cracked asphalt approaches that lead up from the street. We sequence that work around the wet season so grading and base compaction happen before the rains arrive.
Trusted Brands We Service in Hillsborough
We specify, install, and stand behind a curated roster of brands, including American Standard and Toto for plumbing fixtures, Schluter for tile and waterproofing systems, and Sterling for bath systems. Because Hillsborough projects lean toward custom and high-end finishes, we keep direct relationships with manufacturer reps and can pull technical documentation fast when the design-review board asks for specs. You choose the material. We manage the lead time, the install, and the warranty paperwork.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Hillsborough Homes
- County permits filed for a town-run process. Hillsborough is an incorporated town with its own planning and design-review process. A crew that files through San Mateo County out of habit stalls the draw schedule before grading inspection ever happens.
- Grading and drainage priced as an afterthought. On the sloped lots along the town’s edges, winter runoff and mature oak canopy drive retaining-wall, drainage, and root-zone protection scrutiny. We scope those plans before quoting, not as a change order later.
- Long private driveways breaking the logistics budget. Material deliveries, concrete trucks, and equipment access on acreage lots with gated entrances cost real money. We price the haul route, not just the square footage.
- Mid-century framing surprises. Many Hillsborough homes were built in the 1950s and 1960s and have since been heavily remodeled. Opening a wall often reveals outdated electrical or structural framing that has to be brought to current code before finish work starts.
Pricing for General Contractor in Hillsborough, CA
General contractor pricing in Hillsborough reflects the town’s estate-scale housing stock, hillside conditions, and strict design-review process. Below are the ranges we quote for common scopes in this market.
| Project | Hillsborough Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
What moves the number: lot slope, tree-protection requirements, driveway length for equipment access, and whether the project is new construction or renovation inside an existing envelope. We write every allowance, every draw schedule, and every change-order term into the contract before work starts. Call (833) 382-8544 for a free, written estimate.
We Also Serve Cities Near Hillsborough
Our General Contractor team works across the Peninsula, including General Contractor in Hillsborough and the nearby communities of Burlingame, Millbrae, Highlands-Baywood Park, and San Mateo. If your property sits outside the 94010 ZIP, we still know the local permitting landscape and can tell you quickly whether your project clears a city or county counter.
Serving Hillsborough, CA — Our Local Coverage Area
We’re based in the Hillsborough 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 Hillsborough
Hillsborough is its own incorporated town, so your project clears the town’s own planning and design-review process, not San Mateo County. That means plan-check finesse, design-review packaging, and inspection sequencing matter as much as the framing. We prepare the drawings, allowances, and schedules the town expects, so permits move without stalls. Call (833) 382-8544 and we’ll walk you through exactly which boards and reviews your project faces.
Setback requirements on Hillsborough acreage lots mean added engineering, longer utility runs, and often a grading plan that includes retaining walls and root-zone protection. These are not line-item afterthoughts on a true custom estate project; they are core scope. We price them before quoting, so the number you approve is the number you build to.
Yes. Detached ADUs in Hillsborough run $90,000 to $220,000, and we sequence equipment access, tree protection, and rough-in work around the logistics of your driveway. We scope the haul route, the staging area, and the gate clearance before quoting, then build the schedule so the job site stays unobtrusive behind the gate.
We put every allowance, draw schedule, and change-order term in writing before the first day of work. On a high-end remodel, that means you approve material selections before framing starts, you see the true cost of every change before it hits your invoice, and you never fund a change order that wasn’t agreed to in writing. Call (833) 382-8544 if you want to see a sample contract format.
Exterior and foundation work in Hillsborough should be scheduled between late spring and early fall, before the rainy season hits. The town sits in a fog-influenced Peninsula microclimate with wet winters on sloping terrain, which is exactly when drainage, retaining walls, and hillside grading failures surface. We build the schedule backward from the first rain, not from the first available crew date.
Written by Noel Carranza, Owner at Gold Star Contractors, serving Hillsborough with licensed general contracting, remodeling, and estate-scale construction management.