Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Berkeley
Hiring a General Contractor in Berkeley almost always starts with the same question: what will this actually cost, and will the number hold? Our honest answer is that a kitchen remodel here typically runs $14,000 – $45,000, a bathroom remodel $9,000 – $28,000, and a home addition $45,000 – $130,000, depending on what’s inside your walls. We put every price in writing before the first tool is unpacked and we don’t change it unless the scope changes, in writing, with your sign-off. Call (803) 680-2547 for a free estimate and we’ll walk the project with you, no pressure.
Berkeley homes are different from what you’ll find ten minutes east in newer East Bay suburbs. Much of the housing stock was built before 1940, which means our General Contractor team starts most conversations with a structural or seismic question, not a color palette. We’ve worked the flatlands of West Berkeley, the hillside streets above the Claremont, and the older craftsman clusters around Northbrae. The first visit is always about understanding the bones of the house before discussing what goes on top of them.
Key takeaways:
- Written price before any work starts, on every project.
- 365-Day Done Right Promise: if our work isn’t right within a year, we return at no cost.
- Every crew member is background-checked, identity-verified, and introduced to you by name and photo before arriving.
- Most Berkeley remodels involve permit coordination with the City of Berkeley, and we handle that.
Why Mason Remodeling Is Berkeley’s Preferred General Contractor Company
We’re part of the Threshold Group family of home-service companies, founded in 2004. That’s two decades of watching Berkeley’s older homes surprise contractors, and we’ve learned to expect the surprises before they hit the budget. Homeowners in the Berkeley hills and the flats near San Pablo Avenue call us because the number on the proposal matches the number on the final invoice.
The Threshold Standard is how every Mason Remodeling job works. Before we arrive, you get the name and photo of the technician coming to your home. They show up in a clean marked uniform, hand you a photo ID badge at the door, and verify their identity before stepping inside. Berkeley homeowners, especially those at home alone during the day or with young children, consistently tell us this is the reason they chose us over a cheaper bid.
Isaac Pruett leads our Berkeley work and personally reviews every proposal before it reaches you. That’s not a marketing line; it’s how we catch pricing mistakes and scope gaps before they become your problem. Our written guarantee covers every general contracting project for 365 days from the completion date, with free return visits if anything fails.
Styles & brands we work with
General Contractor Services in Berkeley
General Contractor Services in Berkeley mean coordinating every trade, permit, and inspection around a home that was often built before modern code existed. When a homeowner gets three bids for a kitchen remodel and the numbers span $14,000 to $45,000, the gap usually comes down to whether the contractor has accounted for load-bearing walls, settled subfloors, and the seismic retrofit conversation the City of Berkeley may require. A small kitchen remodel in Berkeley runs $9,000 – $20,000; cabinet installation alone typically falls between $4,000 and $13,000, and countertop installation ranges from $2,000 to $6,500.
Load-Bearing Wall Removal and Structural Scope
Older Berkeley homes often have walls that carry the second floor, and removing one without a proper header and permit is a recipe for a costly correction. We pull permits, schedule the city inspection, and make sure the header is signed off before drywall covers it. This is the step that separates a clean $14,000 kitchen remodel from a $45,000 one with a change order attached.
Written Allowances Before Demo Day
An allowance is a dollar amount set aside in your bid for a material you haven’t picked yet, like tile or fixtures. A bid that omits allowances assumes builder-grade everything, and you find out mid-project that the tile you wanted doubles the line item. We write allowances into every Berkeley proposal and explain exactly what they cover. Cambria and Silestone counter installations, for instance, are priced per square foot and written as a specific dollar range before demolition starts.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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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 Berkeley
A Construction Company in Berkeley has to understand that most homes here sit on older foundations, not modern post-tension slabs. Bathroom remodels run $9,000 – $28,000, and the price difference almost always comes down to what’s under the old tile: rotten subfloor from a 1930s plumbing rough-in versus a modern subfloor in good shape. A home addition in Berkeley sits in the $45,000 – $130,000 range, and the lower end assumes a straightforward second-story or ground-level extension with minimal foundation work; the upper end reflects hillside footings, seismic upgrades, and deeper trenching.
Bathroom and Whole-Home Remodeling Coordination
We schedule trades in the order Berkeley inspection cycles actually allow, not the order that’s convenient for our calendar. A bathroom remodel in the hills above Euclid Avenue may require a plumbing rough-in inspection before we can close the subfloor, and the City of Berkeley’s permit office operates with appointment times that affect the schedule. We build the calendar around those real dates and give you a start-to-finish timeline in writing.
ADU and Garage Conversion Work
Berkeley homeowners increasingly ask about accessory dwelling units, which run $90,000 – $220,000 here, and garage conversions at $30,000 – $80,000. These projects involve separate permit tracks, and Berkeley’s zoning rules on setbacks and lot coverage often drive design decisions. We handle the permit submittal and the construction sequencing so you’re not juggling city paperwork while trades overlap in the yard.
Trusted Brands We Service in Berkeley
The materials on your bid matter as much as the labor. We work with specification-grade products from KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone surfaces, and Kohler, Moen, Toto, and Grohe fixtures. If you’re looking at prefab or panelized options for an ADU, we can discuss what Abodu and Cover built for other Bay Area clients, though we’ll always tell you plainly whether a modular approach or a stick-built addition is a better fit for your Berkeley lot. Local parts and sample availability for Berkeley customers are coordinated through our San Francisco Bay Area office so you’re not waiting on a shipment from out of state for a Kohler valve or a Cambria slab approval.
Common General Contractor Problems We See in Berkeley Homes
- Settled subfloors under 1920s and 1930s houses. We took on a kitchen and load-bearing wall removal in a bungalow near the Thousand Oaks neighborhood where the subfloor had settled and the new island drain rough-in ran under slab that needed trenching before we could set KraftMaid cabinets and a Cambria top. The inspection sign-off caught a footing issue that would have cost far more to fix later.
- Load-bearing walls that a previous bid didn’t identify. A contractor prices a cosmetic kitchen, then opens the wall and finds the second floor resting on it. The change order balloons past the original allowance, often in the middle of a project with no written cap.
- Unpermitted work from decades past. An older Berkeley home may have an unpermitted bathroom or a wall that was moved without an inspection. When we pull a permit for a new project, the city often requires us to bring the old work up to current code, which adds cost and time to the schedule.
- Moisture and drainage issues on hillside lots. Homes along Grizzly Peak Boulevard and the Berkeley hills deal with winter rain moving downslope, and we regularly find rotted sill plates where water has wicked up from a missing french drain or a downspout pointed at the foundation.
See the difference
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AfterPricing for General Contractor in Berkeley, CA
Berkeley general contracting prices track older housing stock and the cost of sequencing around city inspections. Here’s the line-item breakdown we quote most often:
| Project | Berkeley Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Small Kitchen Remodel | $9,000 – $20,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
What pushes a Berkeley kitchen to the top of that range? A load-bearing wall removal, slab trenching for new drain lines, a full seismic upgrade, or specification-grade finishes like Cambria quartz and custom KraftMaid cabinetry. What keeps it at the bottom? A straightforward cabinet and countertop refresh with no structural work and mid-grade materials that still meet our written quality standard. We never bid below materials cost to win a job; the price we write is the price we build to. Estimates are free, and the conversation is honest.
We Also Serve Cities Near Berkeley
Our crews serve Berkeley and the surrounding East Bay communities daily. Homeowners in Emeryville, Albany, El Cerrito, and Piedmont call us for the same written-price, written-guarantee standard. If you’re just over the Berkeley line in any of those cities, call (803) 680-2547 and we’ll schedule the same free estimate.
Serving Berkeley, CA - Our Local Coverage Area
We’re based in the Berkeley 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 Berkeley
Yes, if the wall is load-bearing or contains electrical or plumbing. The City of Berkeley requires a permit and inspection for any structural change, and many older wood-frame homes here also need a seismic retrofit or soft-story evaluation alongside a remodel. We pull the permits and manage the inspection schedule so the work is signed off before it’s closed up. Call (803) 680-2547 for a free consultation on your specific wall.
The three biggest drivers in Berkeley are load-bearing walls, subfloor or slab conditions, and material allowances. A $14,000 kitchen assumes no structural changes and builder-grade finishes; a $45,000 kitchen often includes wall removal, slab trenching, seismic work, and Cambria or Silestone counters. We write every cost driver into the proposal so you see exactly where your money goes before you sign. Call (803) 680-2547 for a free estimate with line-item pricing.
A standard bathroom remodel in Berkeley takes four to six weeks from demo to final inspection, with the City of Berkeley’s permit and inspection appointments factored in. Small bathrooms in newer condos can finish in three weeks; larger or older homes with subfloor repair and wall changes run closer to eight. We give you a written timeline before we start and update it if an inspection date shifts. Call (803) 680-2547 to schedule your free estimate.
An allowance is a set dollar amount in your contract for a material choice you haven’t finalized yet, like tile or plumbing fixtures. A bid without allowances assumes you’ll choose the cheapest option available, and when you pick something nicer mid-project, the price climbs. We write allowances explicitly into every Berkeley proposal, state what each covers, and require your written sign-off before exceeding one. Call (803) 680-2547 and bring us any competing bid; we’ll explain the allowance gaps in plain language.
Yes. ADU construction in Berkeley runs $90,000 – $220,000 and garage conversions $30,000 – $80,000, depending on your lot’s zoning constraints and the condition of the existing structure. Berkeley’s setback and lot-coverage rules often dictate whether a detached ADU fits the yard or a garage conversion is the smarter path. We handle the submittal, the construction, and the final sign-off. Call (803) 680-2547 for a free ADU or garage conversion estimate.
Call Mason Remodeling for a Free Berkeley Estimate
You’ll get a written price, a verified crew, and a one-year guarantee in writing. Call (803) 680-2547 to schedule your free estimate, or reach out to ask about any of the projects above.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Berkeley since 2004 as part of the Threshold Group family.
