Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Door Replacement Across Union City
Replacing a door in Union City usually runs $1,200 to $4,800 for a standard exterior unit, and most jobs take one to two days once the door arrives. Interior door installation typically lands between $350 and $900 per door, including labor and hardware. If you’re off Mission Boulevard near the BART line or up in the Seven Hills area, we can get a written quote to you fast, and the price we quote is the price you pay. Call (682) 281-2168 to schedule a free estimate.
We know Union City’s housing stock well because we work in it every week. The split between older bungalows down by Alameda Creek and the newer tract homes in the hills means door work here rarely follows a one-size-fits-all script. Our Door Replacement team measures every rough opening before ordering, so you’re not stuck with a stock-width door that doesn’t fit a 1940s jamb. Serving Union City means understanding that a door on a flood-zone lot off Whipple Road needs different scoping than a door on a wind-exposed ridge near Contempo Homes.
Why Juniper Windows & Doors Is Union City’s Preferred Door Replacement Company
We’ve been doing doors since 2001, and the way we work hasn’t changed: written price first, then the work, then a full year of coverage under the 365-Day Done Right Promise. Union City homeowners tell us the difference shows up in the details, like a technician who actually calls when they’re 20 minutes out, or a digital invoice you can pay from your phone before we even pull away from the curb. The Relay Visibility Guarantee means you get a live arrival time, before-and-after photos of the install, and no surprises on the final number.
Sean Mackey leads our team with a simple rule: every job gets scoped properly the first time, especially in a city where jamb widths and threshold heights vary block to block. Our technicians are background-checked, uniformed, and trained on eight product lines including Therma-Tru, PGT, and ViewLux. When you call (682) 281-2168, a live person picks up, 24/7, and can typically schedule your Union City estimate within a few days.
Interior Door Installation in Union City
Interior Door Installation in Union City usually means replacing hollow-core slabs with solid-core units in older homes, or standardizing mismatched door styles throughout a 1980s two-story near Alvarado-Niles. Most of the jobs we scope involve pre-hung doors for faster install, but Union City’s older bungalows often have non-standard rough openings that need custom jamb work. A typical interior door replacement here runs $350 to $900 per door, which includes the slab, hinges, hardware, casing touch-up, and haul-away of the old door.
Solid-Core Upgrades for Noise and Privacy
Bedrooms and bathrooms in Union City’s tract homes are close together, and hollow-core doors don’t do much for sound. Swapping in solid-core doors with proper weatherstripped jambs makes a real difference in hallways and shared-wall bedrooms. We’ll match the existing trim profile so the new doors blend in like they’ve always been there.
Pre-Hung vs. Slab Replacement
If the frame is square and plumb, a slab replacement keeps costs down and takes a few hours. If the jamb is twisted or the rough opening isn’t standard, which happens frequently in pre-war bungalows near Alameda Creek, we recommend a pre-hung unit. The written quote covers either path, so there’s no change order waiting for you halfway through.
Door Installers in Union City
Door Installers in Union City have to handle two very different housing types in one service area, often in the same week. Our crews work on single-story ranch homes off Smith Street one day and two-story hillside homes near Dry Creek Pioneer Regional Park the next. A standard exterior door replacement in Union City averages $1,200 to $4,800 depending on material, glass package, and whether the jamb needs rebuilt. The quote we hand you before any work starts breaks out every line item.
Entry Door Replacement with Weather Sealing
An entry door in Union City takes a beating from summer sun and winter rain, especially on west-facing elevations. We set the threshold height precisely, install a proper sill pan, and use high-performance weatherstripping so the first big storm doesn’t reveal a leak. Every entry door includes a written workmanship warranty, 365 days on parts and labor.
Exterior Door Jambs and Threshold Adjustments
Older Union City homes near the flood zone often have jambs that rotted from the bottom up after years of seasonal moisture. We rebuild the rough opening with pressure-treated lumber before the new door goes in. The goal is a door that opens smoothly in December and doesn’t bind when the humidity drops in September.
Trusted Brands We Service in Union City
We stock and install CGI, CWS, and ES Windows products, along with Therma-Tru entry systems and PGT impact-rated glass packages. For Union City homeowners, that means you’re not limited to whatever the big-box store has on the shelf or whatever a single-line dealer pushes. Parts and hardware for these brands are available quickly through our Bay Area supply chain, so a warranty claim or a missing hinge doesn’t stall your project for two weeks. The right door for a hillside home with wind exposure is often not the right door for a flatland bungalow, and having eight product lines to choose from means you never settle.
Common Door Replacement Problems We See in Union City Homes
- Rotted jambs on flood-zone properties: Homes near Alameda Creek deal with seasonal moisture that creeps into untreated wood jambs. We see the same failure pattern on 1950s and 1960s ranch homes off Decoto Road, where the original bottom plate wasn’t flashed correctly.
- Sticking doors during winter rains: Wood frames swell when humidity spikes, and doors that close fine in October start dragging across the threshold by January. Replacing the jamb with properly sealed lumber and setting the threshold height correctly fixes the seasonal bind.
- Stock doors ordered for non-standard rough openings: Pre-war bungalows in Union City rarely have today’s standard rough opening dimensions. Ordering a stock-width door without field verification means paying for on-site modification or sending the door back.
- Wind-driven air leaks on hillside homes: West-facing doors in Seven Hills and the Contempo Homes developments take direct wind exposure that flatland homes never experience. A door without the right design pressure rating will leak air around the frame and can void wind mitigation credits on your insurance.
Pricing for Door Replacement in Union City, CA
We Also Serve Cities Near Union City
Our Door Replacement in Union City team also runs quotes for homeowners in Fremont, Newark, San Lorenzo, and Castro Valley. The same written pricing model and 365-Day Done Right Promise apply everywhere we work. If you’re a few minutes over the city line, call (682) 281-2168 and we’ll schedule you just the same.
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 Door Replacement in Union City
Yes, exterior door replacement in Union City typically requires a building permit, especially if the rough opening is being modified or the door is on an exterior wall. Most same-size replacements qualify for over-the-counter permitting through the city’s building department, and our team handles the paperwork for you. Call (682) 281-2168 for exact requirements on your specific project.
Pre-war bungalows in Union City were built before standard door sizing existed, so rough openings often run a half-inch to two inches off today’s stock dimensions. That means the jamb must be custom-fitted or rebuilt on site rather than using a pre-hung unit straight off the shelf. We verify every rough opening before ordering, so you’re never paying for a return trip or a door that doesn’t fit.
Properties in the Alameda Creek flood zone need threshold heights set to meet Union City’s flood-plain advisory, which usually means a raised sill and additional flashing beneath the door. Skipping that step leads to water infiltration and jamb rot within two rainy seasons. We pressure-treat the rough opening and install a proper sill pan on every flood-zone door we set. Call (682) 281-2168 if your home is near the creek and you want an honest assessment.
Yes, homes in Union City’s hillside neighborhoods often qualify for wind mitigation credits when doors and our Window Installation in Union City carry the proper design pressure rating. West-facing elevations see the highest wind exposure, and an impact-rated or high-design-pressure door can lower your insurance premium. Ask your insurer what documentation they need, and we’ll provide the product ratings and installation paperwork after the job.
Most Union City door replacements take two to four weeks from signed quote to final inspection, depending on whether the door is in stock or being fabricated. Custom-sized doors for older bungalows add one to two weeks. The installation itself is usually a one-day job, and we handle the permit sign-off with the city. Call (682) 281-2168 for a timeline specific to your door.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Union City since 2001.










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