Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterConstruction in Union City, CA
Kitchen remodeling in Union City typically runs $14,000 to $45,000, with most 1960s-to-1980s tract homes needing extra structural work before cabinets go in. The flatlands west of Mission Boulevard sit on compressible Bay mud and former tidal wetland fill, which means a simple wall removal can trigger a geotechnical review faster than it would in Fremont’s upland sections. If you’re pricing a project, call (470) 298-9650 and we’ll put numbers in writing before anyone picks up a tool.
Why Union City Homes Are Different
Union City’s western neighborhoods, particularly around Alvarado and the low-lying areas near the old salt flats, sit inside a state-mapped liquefaction hazard zone. That’s not a footnote. It shifts the way we approach footings, slab work, and any addition that adds roof load. Contractors digging for a simple patio footing on bay-side streets routinely hit gray-black Bay mud within two to three feet of grade, a deposit that cannot carry conventional loads and forces a geotechnical report before permits move forward.
The housing stock compounds the issue. Most of Union City’s homes are wood-frame tract builds from the 1960s through the 1980s, many with raised cripple-wall foundations that predate modern prescriptive seismic standards. The older Alvarado and Decoto enclaves go further back, with post-and-pier foundations that sometimes need full replacement before an addition or deep remodel can pass Alameda County review. Add the persistent marine moisture that funnels across the flats from the southern Bay, and you get a city where crawl-space rot, vapor barrier failures, and fastener corrosion show up more often than most owners expect.
Our Main Union City Services
Two services generate most of the calls we take from Union City homeowners, both shaped by those flatland soil conditions and the raised-foundation housing stock.
Fence Installation in Union City
Fence work in Union City is as much about what’s under the post as what’s above it. Bay mud and expansive clay make standard two-foot post holes a gamble; lean on the wrong soil and you get a fence that lists toward the Bay within two winters. We set posts in concrete to a depth that accounts for the shrink-swell cycle in the western half of the city, and we check property lines against recorded easements before the auger goes in. Full details live on the Fence Installation in Union City page.
Driveway & Pavers in Union City
A paver driveway on Union City’s flatlands needs a compacted aggregate base thicker than the code minimum if it’s going to survive the clay expansion underneath. That base work is the difference between a surface that stays flat for a decade and one that heaves after two wet winters. We also handle concrete and asphalt pours with the same subgrade discipline. Prices and paver options are on the Driveway & Pavers in Union City page.
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.
BeforeAfterKitchen Remodeling in Union City
A kitchen remodel in Union City usually starts with a structural question, not a cabinet question. Homes built before modern seismic codes often need foundation bolting, cripple-wall bracing, or localized floor framing repair before new cabinetry can sit level and stay level. The marine air that moves across the flats also means we check for hidden rot along exterior-facing kitchen walls in raised-foundation homes, particularly where old sink plumbing has leaked. Our Kitchen Remodeling process puts the full scope in writing before demo starts.
Full Kitchen Remodeling
Signs you need it
Your floor slopes toward the sink, the cabinetry no longer closes square, or the layout fights how you actually cook.
What it costs in Union City
A full kitchen remodel in Union City runs $14,000 to $45,000 depending on structural work, cabinet grade, and appliance specs.
How we do it
We inspect the floor framing and foundation first, document the finding, then demo, reframe where needed, and install the new kitchen to a written plan.
Cabinets & Countertops
Signs you need it
Cabinet boxes are swollen from moisture, drawer slides are failing, or laminate counters have delaminated at the seams.
What it costs in Union City
Cabinet installation runs $4,000 to $13,000 and countertop installation $2,000 to $6,500 in Union City.
How we do it
We measure exactly, order from the agreed brand line, and install with shims and scribes so doors hang and counters land flush against walls that are rarely square in older tract homes.
Backsplash, Tile & Flooring
Signs you need it
Grout is cracking along the cooktop line, tile is popping at the corners, or the floor under the dishwasher shows water staining.
What it costs in Union City
Backsplash installation in Union City runs $800 to $2,500, with flooring quoted separately based on square footage and substrate condition.
How we do it
We prep the surface flat, set tile with the correct thin-set for the substrate, and document the waterproofing line before the first tile goes up.
Small & Partial Kitchen Remodels
Signs you need it
You want better function without moving plumbing or walls, but the current kitchen looks worn and storage is maxed out.
What it costs in Union City
A small kitchen remodel in Union City runs $9,000 to $20,000; a kitchen island installation alone runs $3,000 to $10,000.
How we do it
We reface or replace cabinet fronts, swap counters and sinks within the existing footprint, and leave the permit-sensitive structural work untouched unless you approve the change order.
What Kitchen Remodeling Costs in Union City
| Item | Typical range in Union City |
|---|---|
| Small kitchen remodel | $9,000 - $20,000 |
| Full kitchen remodel | $14,000 - $45,000 |
| Cabinet installation | $4,000 - $13,000 |
| Countertop installation | $2,000 - $6,500 |
Does a Union City kitchen remodel require a geotechnical report?
Only if you’re changing the building footprint, cutting new foundation work on bay-side lots, or the city’s plan checker flags the address inside the liquefaction zone. Standard interior remodels inside the existing envelope typically do not. Call (470) 298-9650 and we’ll tell you where your address falls.
Will the price change once the kitchen work starts?
Not without a signed change order. Under Clause 1 of the Haven Standard, the written price you approve is the price you pay unless you add scope. If we find rotted framing, we document it and wait for your approval before touching it.
Bathroom Remodeling in Union City
A bathroom remodel in Union City often uncovers what the marine air has been doing inside the walls. Older raised-foundation homes without vapor barriers trap crawl-space moisture, and that moisture climbs into bathroom framing and rots the sill plates behind the tub. We open the wall, show you the substrate condition in photos, and quote the repair in writing. Our Bathroom Remodeling scopes always include the waterproofing line, not just the tile selection.
Walk-In Showers & Shower Remodeling
Signs you need it
Caulk is blackening, tiles are loose along the curb, or the shower pan flexes underfoot.
What it costs in Union City
Walk-in shower installation in Union City runs $4,500 to $12,000; a shower replacement runs $3,000 to $8,500.
How we do it
We strip to the studs, inspect for rot, rebuild the curb and pan with a waterproof membrane, and set tile only after a 24-hour flood test passes.
Tub-to-Shower Conversion
Signs you need it
The tub is rarely used, the tile surround is failing, or someone in the house needs a low-threshold entry.
What it costs in Union City
A tub-to-shower conversion in Union City runs $3,500 to $10,000 depending on valve relocation and framing repairs.
How we do it
We cap the old tub drain, reframe for the new shower footprint, install a solid-surface or tile surround over a waterproofed substrate, and leave the valve accessible behind a removable panel.
What Bathroom Remodeling Costs in Union City
| Item | Typical range in Union City |
|---|---|
| Small bathroom remodel | $5,000 - $12,000 |
| Full bathroom remodel | $9,000 - $28,000 |
| Walk-in shower installation | $4,500 - $12,000 |
| Tub-to-shower conversion | $3,500 - $10,000 |
Does a Union City bathroom remodel need a permit?
Yes, if you’re moving plumbing lines, changing the drain location, or altering framing. Alameda County reviews the wet-area waterproofing and flange details. Cosmetic swaps like vanity and fixture replacement usually don’t. Call (470) 298-9650 to confirm your scope.
Will the price change once the bathroom work starts?
Only via signed change order. If we find rotted sills or a failed shower pan behind the tile, we photograph it, write the repair scope, and wait for your sign-off. The original written price stays put otherwise.
Roofing in Union City
A roof in Union City fights two things at once: persistent bay moisture from the west and the shrink-swell clay that slowly moves the framing beneath it. Shingle curl and granule loss happen faster near the flatlands, and valley flashing on older tract homes often corrodes well before the shingles wear out. A Roofing scope here starts with an attic inspection, because evidence beats assumption on a roof that’s been breathing salt air for forty years.
Roof Repair
Signs you need it
You see water staining on the ceiling, missing shingles after a storm, or rusting valley metal visible from the ground.
What it costs in Union City
Roof repair in Union City runs $400 to $1,800 depending on the number of penetrations and the decking condition under the leak.
How we do it
We trace the leak from the attic side, mark the decking, replace the damaged underlayment and shingles, and photograph the repair before we leave.
Roof Replacement & Installation
Signs you need it
The roof has two active shingle layers, decking feels spongy from the attic, or the granule loss has exposed the asphalt over most of the field.
What it costs in Union City
A roof replacement in Union City runs $8,000 to $20,000, with metal roof installation from $15,000 to $40,000.
How we do it
We tear to the deck, re-sheet any rot, install the agreed underlayment and shingle or metal system, and document the nailing pattern in the photo record.
What Roofing Costs in Union City
| Item | Typical range in Union City |
|---|---|
| Roof repair | $400 - $1,800 |
| Roof replacement | $8,000 - $20,000 |
| Metal roof installation | $15,000 - $40,000 |
| Tile roof repair | $600 - $2,500 |
How many shingle layers can a Union City roof have before replacement?
California code allows two layers maximum, and Union City inspectors enforce re-sheeting when the decking underneath shows moisture damage from the bay air. A tear-off to bare deck is the honest path on most 1960s-1980s tract homes. Call (470) 298-9650 for a written roof scope.
Will the price change once the roof work starts?
Not unless we find rotted decking the previous layers hid. That becomes a signed change order with a per-sheet price you approve before we order lumber. The base replacement price is fixed in writing.
Windows & Doors in Union City
Window replacement in Union City is rarely just about the glass. The marine moisture that pushes through the western flats corrodes window flashing, rots the subsill, and leaves the 1960s single-pane aluminum frames sweating on cold mornings. A Windows & Doors scope here includes the rough opening inspection, because new glass installed into a rotten buck frame fails within years, not decades.
Window Replacement
Signs you need it
Sashes are painted shut, condensation forms between panes, or the crank mechanisms on case windows have seized.
What it costs in Union City
Window replacement in Union City runs $4,500 to $15,000 on a typical home, depending on the frame option and the number of openings.
How we do it
We pull the interior trim, remove the old frame to expose the rough opening, repair any rot with pressure-treated stock, and flash the new window with tape and pan flashing before trim goes back.
Impact Windows & Doors
Signs you need it
You want a door or window that stays intact through a thrown object or break-in attempt, not just one that insulates.
What it costs in Union City
Impact window installation in Union City runs $8,000 to $25,000, with door packages quoted separately against the same per-opening pricing.
How we do it
We spec the laminated glass system to the opening’s wind pressure rating, upgrade the anchoring to the framing, and confirm the locking hardware meets the glass package.
What Windows & Doors Costs in Union City
| Item | Typical range in Union City |
|---|---|
| Window replacement | $4,500 - $15,000 |
| Impact window installation | $8,000 - $25,000 |
| Door installation | Quoted per opening |
Do Union City homes need impact windows?
No, Union City is not in a designated hurricane zone, but some homeowners choose laminated impact glazing for security and noise. Standard energy-efficient dual-pane windows meet local code and the climate here. Call (470) 298-9650 for a side-by-side price.
Will the price change once the window work starts?
Only if opening inspection reveals rot or non-standard framing. The per-window price is written before the first sash comes out, and any repair scope lands as a signed change order first.
Home Additions & ADU in Union City
A home addition in Union City starts underground. The Bay mud that underlies the western flatlands will not hold a conventional spread footing, so any project that adds square footage will almost certainly need geotechnical analysis and either deep piers, grade beams, or a mat foundation. That line item surprises homeowners, but it should not; we write it into the first estimate because skipping it gets a permit killed at the Alameda County counter. Our Home Additions & ADU scopes carry the soil work as a named cost, not a buried contingency.
ADU Design & Permitting
Signs you need it
You want legal square footage in the rear yard, a garage, or above an existing structure, and you need the permit set to pass the first submittal.
What it costs in Union City
ADU construction in Union City runs $90,000 to $220,000 depending on size, foundation type, and utility routing across the clay-heavy yard.
How we do it
We order the geotech report, design to the lot’s soils and setbacks, run the utility path from the main, and submit the full permit set with the structural calcs attached.
Garage Conversion ADU
Signs you need it
The garage is storing boxes, the slab is cracking from clay movement, and the house needs a legal rental or family unit.
What it costs in Union City
A garage conversion in Union City runs $30,000 to $80,000, with the slab repair or re-pour quoted separately after the existing slab is opened.
How we do it
We saw-cut the slab for utility runs, repair or replace it as the geotech dictates, frame the interior walls, insulate to current code, and bring the space to a conditioned living standard.
What Home Additions & ADU 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 |
How long does an ADU take to permit in Union City?
With a complete geotechnical report and structural set, most Union City ADU permits land within three to six months from submittal to issued permit. Incomplete soil work is the most common delay. Call (470) 298-9650 for a realistic timeline on your lot.
Will the price change once the addition work starts?
Not without a signed change order. The soil work, framing, and finishes are all written into the flat price. If the geotech report comes back different than expected, we re-quote before digging starts.
Brands We Service in Union City
We install and service cabinets from KraftMaid and Wellborn, countertops from Cambria and Caesarstone, roofing from GAF and Owens Corning, fixtures from Kohler and Toto, and pavers from Belgard and Techo-Bloc. Our Union City crews stock common hardware for faster turnarounds, and factory orders land within the window quoted at contract. See our brands for the full list.
Pricing for Construction 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 |
| Walk-in shower installation | $4,500 - $12,000 |
| Roof replacement | $8,000 - $20,000 |
| Roof repair | $400 - $1,800 |
| Window replacement | $4,500 - $15,000 |
| Impact window installation | $8,000 - $25,000 |
| Home addition | $45,000 - $130,000 |
| ADU construction | $90,000 - $220,000 |
| Garage conversion | $30,000 - $80,000 |
| Paver driveway installation | $7,000 - $18,000 |
What pushes a Union City price toward the top of the range is almost always the soil: geotech reports, deep footings, and slab reinforcement on the bay-side lots cost real money. The written quote you receive from Rowan Construction Group includes every one of those line items before work begins, so the number holds.
Neighborhoods We Serve in Union City
We work across Union City’s residential grid, from the older post-war streets of Decoto to the mid-century tract layouts around Mission Boulevard and the newer subdivisions east of Dyer Street. Our crews know the soil changes from block to block, and that local read keeps foundation work honest.
- Alvarado
- Decoto
- Mission Gateway
- Contempo
- Ranch 99 area
Service Area - Cities Near Union City
Rowan Construction Group serves Union City and the surrounding Alameda County communities, with dispatch coordinated from our San Francisco Bay Area office and crews working locally. We also cover Fremont, CA, Newark, CA, Castro Valley, CA, and Hayward, CA. If you’re near the county line, call (470) 298-9650 and we’ll confirm the schedule direct.
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 Construction in Union City
We schedule Union City work on a rolling basis, usually within a week for estimates and two to four weeks for most starts, depending on the trade. Emergency roofing calls get priority routing. Call (470) 298-9650 and a live person will confirm the next open slot rather than a recording.
Yes. We pull the permit, schedule the inspections, and hand you the sign-off record at close-out. The permit line is written into the scope on any job that requires one. No work proceeds unpermitted where Alameda County code requires a permit.
Not for shallow work like fence posts or pavers. Those jobs respond more to the expansive clay than to seismic mapping. The liquefaction zone matters for additions, ADUs, and anything with a permanent foundation. We tell you which applies before quoting.
Call Rowan Construction Group at (470) 298-9650 for a free estimate on any Union City construction project. Written price first. Always.
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
"They found an old septic line under the driveway run and stopped, documented it, and re-quoted before continuing."
- Xavier L."Good communication throughout. Weekly written update meant I never had to chase them."
- Nadine G."Driveway replaced properly with a base that will actually last. They explained why the cheaper quote was cheaper."
- Reggie O.