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
If you’re planning a remodel or addition in Hillsborough, the real question isn’t whether you can find a contractor. It’s whether that contractor knows the town well enough to get your permit through design review, handle protected-tree scrutiny, and price the job honestly when walls come open. We do. Timberline Contractors has spent years working on the large-lot estates and custom homes that define Hillsborough’s 94010 zip code, from the wooded hillsides west of Skyline to the manicured streets near Burlingame’s edge. Call (866) 253-5808 and we’ll walk your property together before anything gets priced.
Why Timberline Contractors Is Hillsborough’s Preferred General Contractor Company
Hillsborough homeowners tend to ask harder questions than most. They’ve seen neighbors burned by contractors who quoted a remodel before opening a single wall, then came back with change orders that doubled the job. That’s not how we work. Nelson Fung built Timberline around a simple discipline: inspect first, write allowances into the contract, and get every surprise priced and approved in writing before we touch it. In a town where design-review and protected-tree review can reshape a project before grading starts, that discipline matters.
Our reputation in Hillsborough comes from the same place it does everywhere else: we hold rough-in work to inspection sign-off, we detail north- and west-facing walls for the fog and damp that define the hills, and we don’t hand off accountability to a parade of subs. One contractor, every phase, from the foundation to the ridge cap. Hillsborough homeowners call us because they want one party responsible when the permit office asks questions or when a load-bearing header turns out to be undersized.
Styles & brands we work with
General Contractor Services in Hillsborough
General Contractor Services in Hillsborough means something specific: navigating the town’s own planning and building department, surviving discretionary design review, and managing the hidden conditions inside older custom homes. When a Hillsborough homeowner calls us, the job usually involves whole-house remodels, second-story additions, ADUs, or tear-down rebuilds on lots where heritage oaks and redwoods shape what can be built and where. Here’s what that looks like on the ground.
Home Remodel & Addition Scope
A typical Hillsborough kitchen remodel runs $14,000 to $45,000, and a full home addition lands between $45,000 and $130,000. But those numbers assume we’ve already opened the walls once and priced what’s there. We write electrical, framing, and waterproofing allowances into the contract so the number you approve is the number that holds, with any discovery priced separately before work proceeds.
ADU & Garage Conversion Work
Hillsborough’s large lots make ADUs a natural fit, and we build them through partners like Abodu, Dvele, and Mighty Buildings. ADU construction in Hillsborough typically runs $90,000 to $220,000, and garage conversions fall between $30,000 and $80,000. Both require the same design-review patience and protected-tree awareness as any ground-up project here.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Construction Company in Hillsborough
A Construction Company in Hillsborough has to do more than frame and finish. It has to understand that the town’s dense tree canopy isn’t scenery; it’s the first hurdle on the permit path. Every Hillsborough remodel runs through the town’s planning and building department plus a discretionary design-review process that scrutinizes massing, height, and tree removal before a permit ever issues. We plan for that timeline from the first site visit.
Structural & Exterior Building
When we take on a Hillsborough project, we’re often correcting what previous builders got wrong: cloth-wrapped wiring, failed flashing behind siding, undersized headers at load-bearing walls. Roof replacement in Hillsborough runs $8,000 to $20,000, and we recommend moisture-resistant assemblies on the north- and west-facing exposures where fog settles and stays.
Whole-House Remodeling Accountability
Our General Contractor team carries the project from demolition through final inspection. Bathroom remodels in Hillsborough run $9,000 to $28,000, and a full gut with Schluter-system waterproofing and Toto or Kohler fixtures is worth every dollar when the fog rolls in. We don’t hand you a catalog and disappear. We bring the showroom to the project and make the material decisions alongside you.
Trusted Brands We Service in Hillsborough
We stock and install parts from brands Hillsborough homeowners actually ask for by name: Delta and American Standard for plumbing fixtures, Toto for high-efficiency toilets, Blanco for kitchen sinks. Because we work with 50-plus manufacturer partners across cabinetry, countertops, roofing, windows, and hardscaping, we’re not locked into one supplier’s availability. That means faster turnaround when a fixture fails mid-project and a real warranty behind the install.
Common General Contractor Problems We See in Hillsborough Homes
- Hidden electrical and framing surprises. Older Hillsborough estates often have cloth-wrapped wiring and undersized load-bearing headers hiding behind finished walls. We open the walls during the inspection phase, not after you’ve signed a fixed number.
- Design-review and protected-tree delays. Heritage oaks and redwoods can stall a project before grading starts. We sequence the permit path so the tree review doesn’t collapse your schedule or draw schedule.
- Moisture damage on shaded exposures. North- and west-facing walls in the fog-influenced hills need drainage planes and mold-resistant assemblies. We detail them accordingly, not as an afterthought.
- Contractors who price before they inspect. Quoting a Hillsborough remodel sight unseen is how homeowners end up with six-figure surprises. We write allowances into the contract and price every discovery in writing before work proceeds.
See the difference
Before
After
Before
After
Before
AfterPricing for General Contractor in Hillsborough, CA
| Project Type | Typical Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
What moves a Hillsborough quote isn’t the finish level; it’s what’s behind the drywall and what the design-review board requires. We price allowances for electrical, framing, and waterproofing discoveries into every contract. Call (866) 253-5808 for a free estimate, and we’ll walk you through exactly what your project should cost in Hillsborough’s market.
We Also Serve Cities Near Hillsborough
Timberline Contractors works throughout the Peninsula. If you’re in Hillsborough or a neighboring community, our General Contractor team covers Burlingame, Millbrae, Highlands-Baywood Park, and San Mateo with the same inspection-first process and written allowance discipline.
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
Why does a Hillsborough remodel quote move so much once you open the walls?
Because older custom homes in Hillsborough hide outdated wiring, undersized framing, and failed waterproofing behind finished surfaces. We handle this by inspecting first and writing allowances for electrical, framing, and drainage corrections into the contract before you approve a number. Call (866) 253-5808 for a quote that accounts for what’s actually behind your walls.
Does a Hillsborough permit really change the scope of a remodel?
Yes. Hillsborough’s planning and building department enforces its own design-review process that can require massing, height, or material changes before a permit issues. We factor that review into the schedule and scope from day one, so the permit doesn’t rewrite your project mid-stream. Call (866) 253-5808 to discuss your specific property.
How does Hillsborough’s design-review process affect my construction schedule?
Design review in Hillsborough is discretionary and can add weeks or months before a permit is issued. We sequence the permit path early, submit drawings built to the town’s expectations, and keep the rest of the project moving where possible. That’s part of why we don’t quote a job without understanding your lot and your trees.
Can protected oaks or redwoods stall my Hillsborough project?
Yes, and often do. Hillsborough’s dense heritage oak and redwood canopy triggers protected-tree review before grading starts, which can stall or redesign a project. We evaluate the tree situation during the first site visit and plan around it. Call (866) 253-5808 to have us walk your lot and identify any protected trees that could affect your build.
How do you handle moisture in a fog-influenced Hillsborough home?
We detail north- and west-facing walls and roofs for the damp, shaded conditions Hillsborough’s hills actually get. That means drainage planes, mold-resistant assemblies, and flashing details built for fog, not a dry inland climate. The goal is an envelope that breathes and drains correctly for decades.
Call Timberline Contractors for Your Hillsborough Project
If you’re planning a remodel, addition, or ADU in Hillsborough, start with an inspection and a written scope. We’ll walk your property, identify the hidden conditions and the permit path, and price the job with allowances so you’re never ambushed. Call (866) 253-5808 today to schedule your free estimate.
Written by Nelson Fung, Owner at Timberline Contractors, serving Hillsborough and the Peninsula since day one.