Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable General Contractor Across San Lorenzo
General contractor work in San Lorenzo is not a one-size-fits-all job. Most homes here are Bohannon-era tract houses built between 1944 and the mid-1950s, and they sit on bay mud within striking distance of the Hayward Fault. That combination means the right materials and the right permit path are not optional. They are the whole job. Penhallow Remodeling handles kitchen remodels, bathroom remodels, whole-home renovations, and additions in San Lorenzo with written pricing before work starts and a 365-Day Done Right Promise on every project. If you’re planning a remodel anywhere from San Lorenzo Village to the neighborhoods near Hesperian Boulevard, call (936) 259-2607 for a free estimate.
Why Penhallow Remodeling Is San Lorenzo’s Preferred General Contractor Company
The homes in San Lorenzo repeat the same failures. A contractor who has opened walls in San Lorenzo Village knows what hides behind the sheetrock before the first cut. Trevor Nash leads our team with that same local familiarity. We know the Bohannon floor plans, the post-and-pier foundations, the seasonal clay movement under the slab, and the unpermitted additions from the 1970s that show up in dozens of houses across the community.
San Lorenzo homeowners call us because they want a written number before demo day and a written guarantee that outlasts the punch list. Our General Contractor team operates under The Kingswell Way, which has required written pricing, defined arrival windows, and a clean job site since 2004. A live person answers our phone 24/7. No answering service, no callback window. And every technician who walks onto a San Lorenzo job site is background-checked and in uniform. When we say a crew is arriving, you know who is walking up the driveway.
Beyond the paperwork, we understand what this town’s housing stock demands. Foundation anchors, cripple-wall bracing, and the coastal-spec materials salt air forces onto a job. That is why San Lorenzo homeowners keep our number saved, and why they recommend us to neighbors on the same block facing the same remodel.
General Contractor Services in San Lorenzo
General Contractor Services in San Lorenzo mean managing the full scope: demolition, framing, plumbing, electrical, tile, cabinetry, finishes, permits, and inspections. A typical kitchen remodel here runs $14,000 – $45,000, and a bathroom remodel lands between $9,000 and $28,000, depending on the cabinet line, countertop material, and how much structural repair the old Bohannon framing needs. We pull the permits, schedule the inspections, and hand you a written scope of work before any crew arrives.
Kitchen & Bath Renovation
Most San Lorenzo kitchens and baths still have their original footprint. Expanding one often means opening a load-bearing wall that a previous owner may have altered decades ago. We verify the framing against the stock Bohannon plan, correct what does not match, and bring the rough-in through permits and inspection before tile goes down.
Whole Home & Structural Upgrades
Whole-home remodels in San Lorenzo regularly turn into structural projects once the subfloor opens. Post-and-pier foundations, settled framing, and missing shear wall are common. We specify stainless structural fasteners and marine-grade sealers where the bay air reaches the rough-in, so the work holds beyond the five-year mark.
What happens when you call
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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 San Lorenzo
Construction Company work in San Lorenzo covers room additions, garage conversions, ADUs, and whole-home renovations. A home addition here typically runs $45,000 – $130,000, while a garage conversion lands between $30,000 and $80,000. What drives that number most is not square footage. It is the foundation retrofit Alameda County requires before the addition ties into the original Bohannon frame.
Additions & ADUs
Adding square footage to a San Lorenzo tract home means tying new foundation to old post-and-pier, and that connection is where bay-mud movement shows up first. We detail the anchor pattern, the cripple-wall bracing, and the shear transfer so the new wing does not pull away from the original structure over the next two decades.
Garage Conversions
Garage conversions in San Lorenzo are common because the original garages sit on their own slab and often settle independently from the house. We check the slab elevation, the roof tie-in, and the headroom before quoting the job, so the written price you receive already accounts for the fixes the building will need.
Trusted Brands We Service in San Lorenzo
We install and service materials from brands our San Lorenzo customers ask for by name: KraftMaid and Wellborn cabinetry, Cambria and Caesarstone countertops, Kohler and Moen fixtures, James Hardie siding, and Therma-Tru doors. We also work with modern prefab and panelized systems from Dvele and Abodu when a San Lorenzo homeowner wants a home addition or ADU delivered faster than a traditional stick-built schedule allows. Because we stock and order these lines regularly for Bay Area projects, our San Lorenzo clients are not waiting weeks on a specialty countertop or a back-ordered cabinet door.
Common General Contractor Problems We See in San Lorenzo Homes
- Original post-and-pier foundations on bay mud. San Lorenzo’s clay-heavy alluvial soils swell with winter rain and shrink in dry summers, shifting the piers seasonally. We see door frames out of square and tile cracks that trace directly back to the moving ground underneath.
- 1970s unpermitted wall removals. The Bohannon homes share nearly identical framing plans, so one removed load-bearing wall from fifty years ago shows up in dozens of properties. We verify the framing against the stock plan before trusting any wall with load.
- Inland-grade fasteners near the bay fringe. Salt-laden air pits standard galvanized and #304 stainless hardware within a few seasons. We specify hot-dip galvanized and marine-grade stainless on anything exposed to San Lorenzo’s coastal air.
- Skipped subfloor verification. Assuming a San Lorenzo house matches the stock Bohannon plan without opening the subfloor is how a contractor discovers a prior framing change mid-rough-in, after the schedule and the price are already set. We verify before we quote.
Pricing for General Contractor in San Lorenzo, CA
Here are the real numbers for general contractor work in San Lorenzo. These ranges reflect the coastal-spec materials and structural repairs this housing stock typically requires, not the inland-spec version of the same job.
| Project | Typical San Lorenzo Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
| Vinyl Fence Installation | $3,500 – $9,000 |
| Paver Patio Installation | $3,500 – $11,000 |
The price gap between the coastal-spec and the inland-spec version of the same job is real. You can save a few hundred dollars on fasteners and fence posts today, and pay to replace them within a decade. Our written estimate always specifies which materials are going in, so you can compare the numbers honestly. Call (936) 259-2607 for a free written estimate, with the materials named and the price fixed before work begins.
We Also Serve Cities Near San Lorenzo
Along with San Lorenzo, we handle general contractor work in Castro Valley, San Leandro, Union City, and Oakland. Scheduling for all of these is coordinated from our San Francisco Bay Area office, with crews dispatched locally to San Lorenzo.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Lorenzo
The coastal-spec version costs more because the materials cost more. Stainless structural fasteners, hot-dip galvanized hardware, marine-grade sealers, and sealed paver joints each add a few hundred to a few thousand dollars to a job, depending on scope. On a fence, the difference might be $800. On a deck or an addition, the gap can run $4,000 – $7,000. The inland-spec version saves that money up front, then the salt air near the bay fringe pits the fasteners and eats the untreated posts within a few seasons, and you pay to replace the work. Call (936) 259-2607 and we will show both numbers in writing so you can decide with the full picture.
Yes, and skipping it is the most expensive mistake a San Lorenzo homeowner can make. The permit inspection is the third-party check that confirms the foundation anchoring and cripple-wall bracing were done before the walls closed. Alameda County requirements for bay-mud and Hayward Fault conditions are strict, and an inspector who knows Bohannon framing will catch what a rushed crew papered over. We pull permits on every structural remodel and tie the draw schedule to each inspection sign-off, so the work and the paperwork move together.
We open the subfloor or the wall cavity and verify the framing against what the original Bohannon plan shows. When we find an altered load-bearing wall or an addition that never went through permits, we document it, design the fix, and bring it through the permit process before any new finish work covers it. On a job near San Lorenzo Village, our crew found original post-and-pier framing plus a 1970s wall removal sitting on bay mud that had shifted seasonally. We added stainless structural fasteners, applied a marine-grade sealer to the rough-in, and pushed the altered framing through inspection sign-off before tile went down. The homeowner got a written scope covering the cripple-wall bracing and a draw schedule tied to each inspection.
On a typical San Lorenzo kitchen remodel, the coastal-spec upgrade adds about $1,200 – $2,500 to the total, mostly in fasteners, sealers, and moisture-resistant substrates. On a fence or patio, the gap is $500 – $1,500. On a roof replacement, the upgraded flashing and fasteners add another $800 – $2,000. The cheap spec looks fine on the quote and fails within a decade. We will write both numbers so you can compare what you are actually buying.
Put the price, the materials, the permits, and the guarantee in writing before a single wall opens. That is what The Kingswell Way has required since 2004. You get a written price before work starts, a real arrival window, a clean job site, and a written guarantee on every project. If something fails inside the guarantee period, we come back and fix it at no charge. A second visit is free, no service call, no re-inspection fee. Call (936) 259-2607 for a free estimate and a written scope of work you can hold us to.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving San Lorenzo, CA.