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Remodeling Company in San Lorenzo, CA
Mason Remodeling handles general contracting, bathroom remodeling, and whole-home remodeling across San Lorenzo, CA. This page is the overview: what makes building here different, what work costs in this specific market, and which neighborhoods we cover. If you’re pricing a specific job, use the service pages linked below for line-item breakdowns. For a written, no-surprise estimate on any project, call (803) 680-2547.
Why San Lorenzo Homes Are Different

San Lorenzo was built as one of the Bay Area’s original planned communities, which means the housing stock is remarkably consistent: long, low rooflines, ranch-style layouts, and post-war framing that’s now 70 to 80 years old. That age matters when you’re remodeling. Galvanized plumbing, ungrounded wiring, and original subfloors are common in the neighborhoods north of Hesperian Boulevard. A straightforward bathroom remodel can turn into re-piping or subfloor replacement once walls come open, and we price with that in mind, not after the fact.
The climate here doesn’t swing hard, but it’s damp. Morning fog off the bay settles into crawl spaces and exterior trim. We routinely see sill plate rot under older homes near the San Lorenzo Creek corridor. Driveway and hardscape work also contends with clay-heavy soil that shifts between wet winters and dry summers, so base prep matters more here than in rockier parts of the East Bay. Permits go through unincorporated Alameda County, and any structural or plumbing change is going to trigger plan review, which adds a week or two to most timelines.
Styles & brands we work with







Our Main San Lorenzo Services
Most San Lorenzo homeowners call us first about one of three things: a renovation that’s too big or too structural to piece out, a bathroom that no longer works for the people living in it, or a whole-home update that needs to happen in the right order. Each service has its own detailed San Lorenzo page below.
General Contractor in San Lorenzo
When a San Lorenzo project involves structural changes, multiple trades, or county permits, it needs a general contractor who can pull it together. Our General Contractor in San Lorenzo page covers what we manage: foundations, framing, additions, and the scheduling of every licensed trade on site. Older ranch homes here often hide surprises, and the full page explains how we handle what’s found after demolition starts, including written change orders before any extra work begins.

Bathroom Remodeling in San Lorenzo
Bathrooms in San Lorenzo’s post-war homes are small by modern standards, typically 40 to 70 square feet. Updating one means making tight framing work for a walk-in shower or a double vanity, and the right layout decisions matter more than expensive finishes. Our Bathroom Remodeling in San Lorenzo page breaks down realistic costs and the local conditions that affect the job, from cast-iron drain lines to tile backing that’s seen 60 years of bay fog.

Home Remodeling in San Lorenzo
Whole-home remodeling in San Lorenzo usually means bringing a 1950s footprint into the way families live now: opened kitchens, added storage, better light, and floor plans that flow. The Home Remodeling in San Lorenzo page walks through scoping that work in phases, so the house stays livable and the budget stays honest. We cover how county permitting schedules affect sequencing in this area specifically.

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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Lorenzo
We install and service specification-grade materials from Kohler, Moen, Cambria, KraftMaid, Wellborn, GAF, and others. Common parts and trim are stocked at Bay Area supply yards we use weekly, which keeps most San Lorenzo jobs moving without a two-week wait. See our brands for the full list and warranty details.
See the difference
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AfterPricing for Remodeling Company in San Lorenzo, CA
These are the ranges we quote most often in San Lorenzo. Every project receives a written price before work starts, so the number you sign is the number you pay.
| Service | Typical range in San Lorenzo |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Countertop Installation | $2,000 – $6,500 |
| Window Replacement | $4,500 – $15,000 |
| Vinyl Fence Installation | $3,500 – $9,000 |
| Roof Replacement | $8,000 – $20,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What pushes a San Lorenzo job toward the top of a range is usually what’s hiding inside an older home: cast-iron plumbing, original wiring that no longer meets code, or subfloor damage under damp crawl spaces. We do not deliver verbal estimates that grow by the time you get the final invoice. The price is written, and it’s what you pay.
Neighborhoods We Serve in San Lorenzo
We work across all of San Lorenzo. Most of our crews are running two to three active projects in the area at any given time, so scheduling is measured in days, not weeks.
- San Lorenzo Village
- Hesperian Corridor
- Baywood
- Washington Manor
- Del Rey
Service Area – Cities Near San Lorenzo
While our San Lorenzo crews focus on this community, we also serve nearby East Bay cities including Castro Valley, CA, San Leandro, CA, Union City, CA, and Oakland, CA. If you’re just outside San Lorenzo, call us and we’ll confirm coverage for your street.
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 Remodeling Company in San Lorenzo

Most San Lorenzo projects can be scheduled within one to three weeks of signing, depending on permit timing with unincorporated Alameda County. Simple repairs and smaller bathroom updates often start sooner. Call (803) 680-2547 to check current availability.
Any structural, electrical, plumbing, or mechanical change in San Lorenzo requires a permit through Alameda County. We pull all permits for full-scale remodels and additions, and we schedule the required inspections. The permit process here typically adds one to three weeks to a project timeline.
Yes, we cover the entire San Lorenzo area, including homes near Hesperian Boulevard, the creek corridor, and all residential streets in the 94580 ZIP. If you’re on the border with San Leandro or Hayward, call (803) 680-2547 and we’ll confirm your address before scheduling.
What happens when you call
- 1A real person answersNo phone trees - talk to a local construction pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Lorenzo Customers Say
"Bathroom gut job. Replaced the old tub with a walk-in shower and added a niche. Waterproofing was done properly with a flood test before tile."
- Greg L."Very respectful in the house. Shoe covers every day and a cleanup every evening."
- Alma V."Opened up the wall between kitchen and dining room. They handled the beam and permit and the floor transitions look seamless."
- Wendy A.











