A Penhallow company - serving San Jose, CA
A new rear addition with a vaulted beamed ceiling and tall windows
General Contractor · Alum Rock, CA

General Contractor in Alum Rock - Licensed & Insured, Written Fixed-Price Quotes

Free on-site estimate and a written, line-item quote before any work begins. One contract, one crew, one accountable point of contact. Licensed, insured, permits handled.

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A finished backyard cottage with a small covered porch
A single-story rear room addition with tall windows and a new patio
A low-threshold walk-in shower with a bench and grab bar
A finished basement family room with a media wall and wet bar
A walk-in pantry with wood shelving
A powder room with botanical wallpaper and a stone sink
A remodeled laundry and mudroom with a bench, cubbies and painted cabinets
A built-in window seat in a bay window
Every visit starts with

Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled

Your dream remodel for as low as$199/month*On approved credit; ask for current terms
Get your free estimate

Fast, Reliable General Contractor Across Alum Rock

Hiring a general contractor in Alum Rock means finding someone who understands what those East San Jose foothill lots actually throw at you: clay-heavy soil that moves with the seasons, steep driveways that make equipment access tricky, and 1950s-era framing that rarely matches today’s code. Our General Contractor team handles kitchens, bathrooms, additions, and whole-home remodels for homeowners throughout Alum Rock, always with a written price before the first wall comes down. When you call (669) 274-2362, a real person picks up, and we’ll schedule a no-pressure walkthrough at your home. You’ll get straight answers about what a remodel in the Alum Rock hills costs and what surprises we need to inspect for before you commit.

General contractor and client reviewing blueprints inside a home under construction in Alum Rock, CA

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Why Penhallow Remodeling San Jose Is Alum Rock’s Preferred General Contractor Company

A second-story addition that matches the existing roofline

Trevor Nash runs our Alum Rock projects the way he’d want someone to run work on his own house. That means no verbal ballpark that balloons after demo. Every quote we hand a homeowner is a written number, line by line, and the guarantee that goes with it is written too. If work fails inside the first year, we come back and fix it. No service call, no re-inspection fee. That’s the 365-Day Done Right Promise, and it’s been the standard at every Kingswell family company since 2004.

We know Alum Rock streets. We’ve worked along Alum Rock Avenue, up into the neighborhoods off Toyon Avenue and Kirk Avenue, and through the narrower roads near Alum Rock Park where a dumpster takes real planning. We know which projects trigger extra City of San Jose hillside permits and which ones sail through over-the-counter. That means fewer surprises for you and a schedule that holds up once we start.

Explore

Styles & brands we work with

Kitchen remodeling
Kitchen remodeling
Bathroom remodeling
Bathroom remodeling
Home additions & ADU
Home additions & ADU
Roofing
Roofing
Windows & doors
Windows & doors
Driveway & pavers
Driveway & pavers
Fence
Fence

Residential General Contractor in Alum Rock

Residential General Contractor work in Alum Rock usually starts with a question: what’s behind these walls and under this floor? Most of the homes here were built between roughly 1955 and 1975, and many have never had a single wall opened. That means our first job is an inspection-first approach. We look at the foundation, the framing, the electrical, the drainage around the house. Then we write your quote with allowances built in for the things we know happen in this area: knob-and-tube wiring, settled beams, failed waterproofing on hillside retaining walls.

Older Home Remodels

Kitchen Remodeling in Alum Rock for a 1960s stucco home runs $14,000 to $45,000, depending on cabinet line, countertop material, and what the walls reveal. We typically use KraftMaid or Wellborn cabinets, Cambria or Silestone surfaces, Kohler or Moen fixtures. The number on day one is the number on the invoice, unless we uncover something code-triggered, and then we bring you a written change order before touching anything else.

Hillside Access and Prep

On slope-heavy lots, we plan for retaining wall work, temporary shoring, and drainage corrections before finish materials ever arrive. We don’t lowball a quote and then “discover” the hillside issue after the tile is down. We tell you about it in the walkthrough, price it in the contract, and schedule it so your project finishes on time.

Hire a General Contractor in Alum Rock

When you hire a General Contractor in Alum Rock, you’re hiring someone to manage the entire job: permits, crew scheduling, material ordering, inspections, and the inevitable mid-project decisions. The work typically involves either a single-room remodel or a larger project like an addition or whole-home renovation. You need this kind of coordination when your project touches structural walls, plumbing, electrical, or exterior work, which is nearly every project in this part of San Jose.

Permit Coordination

Most Alum Rock remodels need permits from the City of San Jose. We pull them, we schedule the inspections, and we make sure the work passes on the first visit when possible. If a previous owner added a room without permits, we’ll flag that in our initial report and help you decide whether to legalize it as part of the scope or keep the permit scope separate. We never open a wall and hope the inspector doesn’t notice.

Written Allowances

Every Penhallow contract in Alum Rock includes named allowances for items like electrical panel upgrades, seismic strapping, and dry rot repair on older framing. An allowance means the cost is bracketed in writing before work starts. If we come in under the allowance, you pay less. If a change order is needed, you approve the number before we proceed. That’s the whole difference between a contractor who communicates and one who surprises you at the end.

General contractor and client reviewing house renovation blueprints on construction site in Alum Rock, CA

Trusted Brands We Service in Alum Rock

We spec and install materials from brands that stand behind their work the same way we do. For windows on hillside homes that get serious afternoon sun and winter storm exposure, we often recommend ECO Window Systems for their thermal performance and clean sightlines. For exterior envelope work, CWS window and door systems hold up well against Alum Rock’s wet winters and hot, dry summers. When the job calls for custom window packages on older stucco homes, ES Windows delivers tight tolerances and finishes that don’t fight the original architecture. We keep local inventory knowledge current so turnaround on replacement parts for Alum Rock homeowners stays quick.

Before & after

See the difference

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

Common General Contractor Problems We See in Alum Rock Homes

  • Clay soil movement under original foundations. Alum Rock sits on clay-rich hillside soils that swell in winter rains and shrink in summer heat. That seasonal movement cracks foundations, shifts door frames, and opens up drywall seams. We evaluate drainage and slope stability before any load-bearing work starts.
  • Unpermitted additions from decades past. Many 1960s-era homes here have a converted garage or a back room that was never permitted. Opening walls can trigger stop-work orders if the city finds out mid-project. We identify these issues during the walkthrough and build the retroactive approval process into your scope and schedule.
  • Narrow street access for equipment and debris disposal. Streets near Alum Rock Park and up into the foothills are tight, curving, and sometimes steep. Dumpsters, concrete trucks, and material deliveries all need planning. We coordinate with the city’s encroachment permit office so your project doesn’t stall on logistics.
  • Old electrical and plumbing hiding behind stucco. Knob-and-tube wiring, galvanized supply lines, and undersized service panels are common in homes built before 1980 along Alum Rock Avenue and the surrounding streets. We include electrical and plumbing allowances in every older-home quote so a remodel doesn’t stall when the walls come open.

Pricing for General Contractor in Alum Rock, CA

Here’s what general contractor projects actually cost in this part of San Jose, based on the work we’ve priced across Alum Rock neighborhoods. Every number is a written price before we start, and no job gets a pass on the 365-Day Done Right Promise.

Project Type Typical Alum Rock Price Range
Kitchen Remodel $14,000 – $45,000
Bathroom Remodel $9,000 – $28,000
Home Addition $45,000 – $130,000
Roof Replacement $8,000 – $20,000
Impact Window Installation $8,000 – $25,000

What moves the number up or down? Cabinet line and countertop choice, whether the project triggers a panel upgrade, how much structural correction the framing needs, and whether drainage work is required. We give you a line-item written quote so you see exactly where every dollar goes. Call (669) 274-2362 for a free estimate on your specific project.

We Also Serve Cities Near Alum Rock

Our crews work regularly in Alum Rock and the surrounding East San Jose foothill communities. We also take on select projects in San Jose, Santa Clara, Mountain View, and Los Gatos when the scope is a good fit for our process. If you’re just outside Alum Rock, call and ask. We’ll tell you straight whether we can get a crew to your street and when.

Serving Alum Rock, CA - Our Local Coverage Area

We’re based in the Alum Rock 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 Alum Rock

Why Alum Rock Chooses Penhallow Remodeling San Jose

We set the standard for general contractor in Alum Rock.

No Change-Order Surprises

The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.

Licensed & Insured

Fully certified technicians who meet all local and state licensing requirements.

Upfront Pricing

No hidden fees, no surprises. You approve the price before any work begins.

Guaranteed Work

Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.

How It Works in Alum Rock

Getting your general contractor handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your general contractor needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Alum Rock - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local general contractor pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Alum Rock Customers Say

Trusted by homeowners across Alum Rock and surrounding areas.

★★★★★

"Full home refresh before we sold. They were straight about what was worth doing and what wasn't to get our money back. On time, on budget, and it sold in a week."

Monica Vaughn · Verified customer
★★★★★

"Did our whole kitchen. The written estimate held, which after reading remodel nightmares online I did not take for granted. Showed up every morning on time and the crew was clean and polite."

Warren Updike · Verified customer
★★★★★

"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 · Verified customer

Ideas for every room in the house

Built-ins, window seats, family rooms and staircases: the changes that make a whole house work better.

Read our remodeling guides
A remodeled hall bathroom with subway tile and a floating vanityA remodeled primary suite with built-in wardrobes and a window seatNew painted shaker cabinets with an organized deep drawerA remodeled hall bathroom with patterned floor tile and painted wallsA remodeled staircase with wood treads and a slim metal railingA small remodeled galley kitchen with cabinets to the ceiling

More remodeling services in Alum Rock

Every project below starts the same way: a free on-site visit and a written price.

Getting started with Penhallow in San Jose

Every project starts with a conversation and a written price. Here is how to take the first step.

A project lead measuring a kitchen with the homeowner during a free estimate

Free on-site estimate

A project lead walks the job with you, measures it and hands you a written, line-item price. No obligation.

Book an estimate
A remodeling crew arriving at a home with lumber and tools

Your San Jose team

A local crew that works across San Jose and the towns around it, to the same written standard as every Penhallow location.

Areas we serve
A worker laying floor protection and a dust barrier before work starts

Read our written promise

What we promise on every job, written down, with the terms spelled out before any work starts.

Our promise

Ready for General Contractor in Alum Rock?

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(669) 274-2362

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