Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Union City, CA
Home remodeling in Union City runs $9,000 – $130,000 depending on scope, with most whole-home projects falling between $45,000 and $130,000. We’re Penhallow Remodeling, and we handle kitchen and bathroom remodels, whole-home renovations, and additions for Union City homeowners from our San Francisco Bay Area dispatch office. You can reach us at (936) 259-2607 to schedule a free estimate with a written price before any work starts.
Union City’s housing stock presents a specific challenge: the 1960s – 1980s tract homes on slab or cripple-wall foundations in the hillside tracts need different structural approaches than the early-20th-century bungalows in Decoto and Alvarado with their aging balloon framing and deferred foundation work. Add the salt-laden marine air corroding fasteners and hardware faster than inland cities, plus the compressed November – March wet season squeezing exterior work windows, and you’ve got a market where material specs and scheduling matter as much as craftsmanship. We factor all of it into the written price we give you before a cabinet comes down.
Why Union City Homes Are Different
Union City sits in a geographic pinch point that shapes every project we bid. The western flatlands near the old Alvarado district were reclaimed bay mud and former marshland, and they’re documented liquefaction hazard and FEMA flood zones. Meanwhile, the Hayward Fault traces the eastern hills. Construction here must solve soft-soil foundation engineering and seismic retrofitting at the same time, a dual liability more acute in Union City than in neighboring Fremont or Hayward.
We’ve seen contractors permitted elsewhere in the East Bay get blindsided when Alameda County flags a western flatlands project for liquefaction zone requirements. The geotechnical borings and engineered foundation designs add cost and time that don’t show up a mile east in the hillside tracts. Homeowners in the Decoto and Alvarado neighborhoods face a different puzzle: original balloon framing, aging foundations, and structural work deferred across multiple owners. The salt air off the bay accelerates corrosion of exposed metal fasteners, flashing, and structural hardware, so we spec stainless or galvanized hardware where inland contractors might use standard stock. And the wet season runs November through March with little forgiveness, so we schedule foundation pours, framing, and exterior work with real contingency built in.
Our Main Union City Services
Union City homeowners call us most often for full-room renovations and structural updates. Here’s what each service covers locally.
General Contractor in Union City
We manage permitting, structural work, and trade coordination for Union City projects from start to finish. That includes navigating Alameda County’s liquefaction zone requirements in the western flatlands, coordinating geotechnical reports when plan check flags them, and sequencing work around the compressed dry season. Our crews are background-checked and uniformed, and you’ll get a written price and a real arrival window before any work starts. General Contractor in Union City

Bathroom Remodeling in Union City
Union City’s 1960s – 1980s tract bathrooms often have original cast-iron drains, inadequate venting, and slab-on-grade floors that complicate plumbing relocation. We handle full gut renovations, tub-to-shower conversions, and walk-in shower installations with moisture-resistant cement board substrate behind every tile job. In the older Decoto bungalows, we frequently find galvanized supply lines and out-of-level floors that need addressing before finishes go in. Bathroom Remodeling in Union City

Kitchen Remodeling in Union City
Kitchen remodels in Union City range from updating 1970s U-shaped layouts to full reconfigurations with island additions and opening walls into adjacent living spaces. We install KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone countertops, and Kohler and Moen fixtures with the substrate and ventilation details spelled out in writing. Homes on slab foundations often limit plumbing relocation options, so we design around existing drain locations when it saves you money without compromising function. Kitchen Remodeling in Union City

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 Union City
Whole-home remodeling in Union City addresses the specific conditions of a city split between bay-mud flatlands and hillside tracts, with housing stock ranging from 1920s bungalows to 1980s ranch homes on slab foundations. We see two distinct project types: seismic retrofitting and structural updates for the older Decoto and Alvarado homes with balloon framing and aging foundations, and layout modernization for the 1960s – 1980s tract homes with compartmentalized floor plans, inadequate insulation, and original systems at end of life. Home Remodeling with Penhallow means a written price before demo, a 365-Day Done Right Promise on every project, and crews who understand that Union City’s salt air and seismic requirements change what “standard” means.
Whole House Remodel
Signs you need it
Your home still has original aluminum wiring, a failing slab with no moisture barrier, or a floor plan that doesn’t match how you actually live.
What it costs in Union City
Whole house remodels in Union City typically run $45,000 – $130,000, with most projects landing in the $65,000 – $95,000 range depending on structural work and finish level.
How we do it
We start with a structural assessment, especially for homes in the Decoto or Alvarado areas with original foundations; then we sequence the work room by room so you’re never fully displaced, with permits pulled and inspections passed at each phase.
Home Renovation
Signs you need it
Your kitchen, bathrooms, and living spaces all need updates but you’re not ready for a full gut, or you’ve inherited a home with decades of deferred maintenance across multiple systems.
What it costs in Union City
Home renovation projects in Union City typically range from $9,000 for focused room updates to $45,000 for multi-room work with systems replacement.
How we do it
We prioritize by safety and daily impact, handling structural and mechanical work first, then moving through finishes with a written schedule that accounts for Union City’s wet-season constraints on exterior access and ventilation.
What Home Remodeling Costs in Union City
| Item | Typical range in Union City |
|---|---|
| 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 Union City?
Yes, we pull all required permits through Alameda County for every project, including the geotechnical and structural plans that western flatlands projects often need. We handle plan check responses and schedule inspections so you don’t have to chase paperwork. Call (936) 259-2607 and we’ll walk through what your specific property requires.
Will the price change once work starts?
No. The written price we give you before work begins is the price on the invoice, period. If we discover hidden conditions during demo, we document them, explain the options, and get your written approval before any additional work proceeds. Call (936) 259-2607 for a free estimate with a guaranteed-fixed price.
Brands We Service in Union City
We install and service premium brands including Abodu, Cover, Dvele, and Mighty Buildings for accessory dwelling units and modular additions, with parts and materials sourced through our trade relationships for faster turnaround than special-order timelines. See our brands for the full list of cabinetry, countertop, fixture, and siding lines we carry.
Pricing for Remodeling Company in Union City, CA
| Service | Typical range in Union City |
|---|---|
| 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 |
| 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 |
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
Prices push higher in Union City when geotechnical reports are required for western flatlands work, when seismic retrofitting is needed for pre-1960 homes, or when salt-air corrosion has compromised structural hardware that must be replaced to meet current code. Every homeowner receives a written, line-item price before any work starts, backed by The Kingswell Way: say the price before the work, show up in the window we gave, leave the place cleaner than we found it.
Neighborhoods We Serve in Union City
We work across Union City’s full residential map, from the hillside tracts to the flatland neighborhoods, with crews dispatched from our San Francisco Bay Area office. Most projects can be assessed within a few days of your call.
- Alvarado
- Decoto
- Pacific Park
- Hillcrest
- Old Alvarado District
Service Area – Cities Near Union City
Our crews serve the full East Bay corridor surrounding Union City, including Fremont, CA to the south with its larger estate properties and custom home market, Newark, CA immediately adjacent with similar flatlands conditions and liquefaction considerations, San Lorenzo, CA to the north with its postwar housing stock and renovation demand, and Castro Valley, CA to the northeast with hillside construction and different drainage challenges. We coordinate scheduling across these cities from our Bay Area dispatch office to keep arrival windows tight and response times predictable.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City 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 Union City
We typically schedule initial consultations within 2 – 4 business days, with written estimates following within 48 hours of our visit. A live person answers our phone 24/7 to book your appointment; call (936) 259-2607.
Some Alvarado and Decoto blocks have design review or historic considerations, but most Union City neighborhoods fall under standard Alameda County permitting. We research your specific property’s requirements during our first visit and factor any additional approvals into the written schedule and price.
We serve all Union City residential neighborhoods, from the western flatlands near the old marshlands to the eastern hillside tracts along the Hayward Fault zone. Our Bay Area dispatch office coordinates crew assignments across the full city and surrounding East Bay communities.
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 Union City Customers Say
"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"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"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







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