Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Mayfair, CA
Home remodeling in Mayfair runs $9,000 – $130,000 depending on scope, with most whole-house projects landing between $45,000 and $130,000. We’re Penhallow Remodeling, and we handle kitchen and bathroom renovations, whole-home remodels, and additions for Mayfair’s post-war housing stock. Our crews coordinate scheduling from the Kingswell Los Angeles office and serve Mayfair locally. Call (936) 259-2607 to schedule your free estimate.
Mayfair’s 1940s – 1960s bungalows and stucco tract homes present a specific challenge: most were built before California’s modern seismic codes, with shallow perimeter foundations and little to no anchor bolt connections. When we pull permits for structural work or additions, San Jose’s building department requires seismic retrofitting as part of the package. That means every significant project here starts with a conversation about cripple-wall bracing, hold-downs, and shear panels. We build that into our written price from day one, so you’re not surprised by code-triggered costs after demo starts.
Why Mayfair Homes Are Different
Mayfair sits on the Santa Clara Valley flatlands, where expansive clay-and-alluvial soils shift seasonally with San Jose’s wet winters and dry, hot summers. We’ve seen slab heave and foundation cracking repeat year after year in homes without proper moisture barriers or drainage. Summer concrete pours here need careful hydration management; the dry heat can cure a slab too fast and leave it brittle.
The housing itself tells the story: small, single-story wood-frame structures with stucco exteriors, many on original 60 – 100 amp electrical services and galvanized plumbing concealed in walls. When homeowners in Mayfair ask about ADUs, we almost always find undersized panels and single water-service lines that need full upgrading before inspection. The ADU boom driven by Silicon Valley housing costs has made this a routine part of our initial assessment. We price that electrical and utility work into the written quote upfront, not as a change order after the fact.
Our Main Mayfair Services
Mayfair homeowners call us most often for structural renovations and room transformations. Here are the services we offer with dedicated Mayfair pages:
General Contractor in Mayfair
We manage full-scale construction projects in Mayfair, from seismic retrofits on 1950s foundations to room additions that tie into existing stucco exteriors. Our crews handle permit coordination with San Jose’s building department, including the structural calculations that older homes often require. Every project gets a written price before work starts and a 365-Day Done Right Promise backed in writing. General Contractor in Mayfair

Bathroom Remodeling in Mayfair
Mayfair’s small bathrooms, typical of post-war tract design, need careful space planning to gain function without expanding the footprint. We replace aging galvanized supply lines with modern PEX or copper, install moisture-resistant cement board substrate behind tile, and select fixtures that fit compact layouts. Our written quote includes all plumbing updates required by San Jose code. Bathroom Remodeling in Mayfair

Kitchen Remodeling in Mayfair
Kitchens in Mayfair’s 1,000 – 1,400 square foot homes demand efficient layout reconfiguration. We relocate walls when structurally feasible, upgrade electrical to handle modern appliance loads, and install cabinetry from KraftMaid or Wellborn with Cambria, Silestone, or Caesarstone countertops. Every kitchen remodel includes a written price and arrival window before demolition begins. Kitchen Remodeling in Mayfair

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.
Home Remodeling in Mayfair
Home remodeling in Mayfair means working with 1940s – 1960s construction that predates modern seismic, electrical, and plumbing codes. We specialize in whole-house renovations that bring these homes up to current standards without losing their neighborhood character. Our process starts with a structural assessment, includes all code-required upgrades in the written price, and finishes with our 365-Day Done Right Promise. Home Remodeling from Penhallow Remodeling covers everything from single-room updates to complete transformations.
Whole House Remodel
Signs you need it
Your electrical panel still has fuses or a 60-amp service, galvanized plumbing runs through walls, floors slope toward the center of the house, and you’ve patched the same foundation crack twice.
What it costs in Mayfair
A whole house remodel in Mayfair typically runs $45,000 – $130,000, with most projects landing between $65,000 and $95,000 once seismic retrofitting, electrical service upgrades, and modern plumbing are included.
How we do it
We sequence the work in phases: structural and seismic first, then mechanical systems, then interior finishes, so you’re never living in a house with open walls and no working plumbing.
Home Renovation
Signs you need it
Your kitchen and bathrooms function but feel dated, energy bills are climbing from poor insulation and single-pane windows, and you’re not ready for a full gut but want meaningful improvement.
What it costs in Mayfair
Targeted home renovations in Mayfair typically range from $14,000 – $55,000 for kitchen-focused work and $9,000 – $28,000 for bathroom updates, depending on whether we need to open walls for electrical or plumbing.
How we do it
We identify the highest-impact upgrades for your budget, phase the work to keep rooms functional, and always test for asbestos in original flooring or drywall before disturbance.
What Home Remodeling Costs in Mayfair
| Item | Typical range in Mayfair |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Small Kitchen Remodel | $9,000 – $20,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
Do you pull permits for home remodeling in Mayfair?
Yes. San Jose’s building department requires permits for structural work, electrical upgrades, plumbing changes, and any addition or ADU. We handle the application, drawings, and inspections as part of every project. Call (936) 259-2607 to schedule your free estimate.
Will the price change once work starts?
No. Our written price is fixed. The only exception is if you request changes after signing, or if concealed conditions differ materially from what we could reasonably inspect. Even then, we stop work and document the issue before any additional cost applies. Call (936) 259-2607 for an exact quote – estimates are free.
Brands We Service in Mayfair
We install and service materials from recognized trade brands: KraftMaid and Wellborn cabinetry, Cambria, Silestone and Caesarstone countertops, Kohler, Moen, Blanco, Delta and Grohe fixtures, James Hardie siding, and more. For ADU and addition projects, we also work with prefabricated unit manufacturers including Abodu, Cover, and Dvele. Most standard items are available through our San Jose-area suppliers with one-week turnaround. our brands
Pricing for Remodeling Company in Mayfair, CA
| Service | Typical range in Mayfair |
|---|---|
| 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 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Roof Replacement | $8,000 – $20,000 |
Three factors push Mayfair prices higher: seismic retrofitting required by code on structural work, electrical service upgrades from 60 – 100 amp to 200 amp, and foundation repairs triggered by expansive soil conditions. We identify these during our initial assessment and include them in your written price before any work starts. The number we give you on day one is the number on the invoice.
Neighborhoods We Serve in Mayfair
Our crews work throughout Mayfair and the surrounding East San Jose area. Most Mayfair homeowners can expect us to schedule an initial visit within two business days of calling.
- Mayfair proper (post-war stucco bungalows near McLaughlin Avenue)
- East San Jose corridor (Alum Rock Avenue vicinity)
- Little Portugal adjacent blocks
- King and Story corridor
- Capitol Expressway nearby residential
Service Area – Cities Near Mayfair
We serve homeowners throughout the greater Bay Area from our Los Angeles-coordinated dispatch. In addition to Mayfair, our crews regularly work in Los Angeles, CA, San Diego, CA, San Jose, CA, and San Francisco, CA. Scheduling is coordinated to minimize travel time and keep arrival windows reliable.
Serving Mayfair, CA - Our Local Coverage Area
We’re based in the Mayfair 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 Mayfair
A live person answers our phone 24/7, and we typically schedule an in-home assessment within two business days. Most Mayfair projects begin with a 60 – 90 minute walkthrough where we inspect foundation conditions, electrical service size, and plumbing material.
Mayfair falls under San Jose’s building department jurisdiction, which enforces California’s seismic retrofit requirements for structural work. Any addition, ADU, or significant remodel requires anchor bolts, cripple-wall bracing, or modern hold-downs if missing from the original build. We handle all permit applications and inspections.
Most of Mayfair’s older neighborhoods do not have active HOAs, but some newer infill developments do. We review CC&Rs when applicable and submit architectural applications on your behalf if required. Our written quote includes any HOA-related documentation time.
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 Mayfair Customers Say
"Gutted and redid the master bath. They gave me a schedule and actually stuck to it. Any time there was a choice to make they called me instead of guessing. Love the result."
- Kayla Benton"Kitchen and dining room opened up into one space. They were honest about which wall could come down and which couldn't, no sugarcoating. Dust was kept way down with plastic everywhere."
- Oscar Benitez"Redid two bathrooms at once. The crew protected the floors and cleaned up every single day before leaving. Quote was detailed and there were no mystery charges at the end."
- Tricia Dawson







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