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 Fremont
Door replacement in Fremont typically runs $1,200 to $4,800 for a standard exterior entry door, with most installations completed in a single day. High-end fiberglass and impact-rated options from Therma-Tru or CGI can reach $7,000, especially when the rough opening needs reframing. If your door sticks, sags, or lets daylight through the weatherstripping, call Juniper Windows & Doors at (682) 281-2168 for a written quote before anyone touches a screwdriver. We know Fremont’s housing stock, its clay soils, and what those two things do to a door frame over 30 years of seasonal movement.
Why Juniper Windows & Doors Is Fremont’s Preferred Door Replacement Company
Fremont homeowners call us because we show up when we say we will, with a live arrival time you can track from your phone, and because the price we quote is the price you pay. No vague estimates. No surprise change orders at the door. Our background-checked, uniformed technicians work across Mission San Jose, Glenmoor, and Centerville every week, so they know exactly what Fremont’s 1960s and 1970s tract homes need when a door won’t close square anymore. Sean Mackey leads our crew with one standard: every job gets a written price before work starts, backed by the 365-Day Done Right Promise. If it’s not right a year later, we make it right, parts and labor, in writing.
Door Installers in Fremont
Door Installers in Fremont do more than swap a slab. On most Fremont homes, the real work is in the rough opening: checking the jamb for square, shimming it level, and re-anchoring the frame so the new door operates smoothly through summer heat and winter rain. A typical exterior door install here takes four to six hours. Interior pre-hung doors run $400 to $900 each, while an exterior fiberglass unit with proper flashing and sealing lands between $1,800 and $3,500.
Entry Door Installation
We pull the old slab and frame, inspect the header and king studs, then set the new pre-hung unit plumb and level before insulating the gaps. Most Fremont entry doors we install are Therma-Tru fiberglass with energy-efficient cores, chosen because they handle temperature swings from the Bay without warping.
Interior Door Upgrades
Replacing dated hollow-core doors with solid-core or panel doors changes how a home sounds and feels. In Fremont’s larger ranch homes and newer Warm Springs builds, we handle multi-door swaps efficiently, usually knocking out three or four doors in a single visit.
Door Contractors in Fremont
Door Contractors in Fremont have to think about permits, inspections, and seismic strapping, because this city sits in a moderate seismic zone and the building department enforces it. When a rough opening changes size or the header gets touched, Fremont requires a permit, and final inspection checks that the door swing clears the landing and does not block egress. Our team pulls the permit, schedules the inspection, and stands behind the work for a full year. Expect a licensed contractor to charge $150 to $400 for the permit and inspection process on top of the door itself.
Permit-Ready Replacements
If your existing rough opening stays as-is and we’re only replacing the slab and hardware, Fremont generally considers that exempt from a permit. We’ll tell you which situation applies to your job before we quote it, in writing.
Structural Corrections
When clay soils have shifted a California split-level or a 1970s rancher, the jamb can be out of plumb by half an inch or more. We shim, re-anchor, and reframe as needed, and the door gets re-hung to clear the landing properly. This is the difference between a door that works for a decade and one that binds again next spring.
Trusted Brands We Service in Fremont
We stock and service Therma-Tru, PGT, CGI, and ViewLux doors for Fremont customers, which means common parts like sweeps, thresholds, and hinge kits are available locally without two weeks of freight. CGI and CWS impact-rated doors are a good fit for Fremont’s hotter, sun-exposed west-facing entries. If you already own one of these brands and it’s underperforming, we can often restore it rather than replace it, but when replacement is the right call, we’ll line-item the options and let you choose.
Common Door Replacement Problems We See in Fremont Homes
- Out-of-square jambs in older tract homes. Fremont built out fast in the 1960s and 1970s, and many original frames have settled with the clay soil. Measuring only the slab and ignoring the rough opening forces a surprise reframe mid-job, which changes cost and timeline.
- Unpermitted prior work surfacing at resale. A homeowner swaps an entry door without a permit when the opening changed, and the next buyer’s inspector flags it. We see this often in Glenmoor and Niles, and it costs more to fix after the fact than to permit it the first time.
- Seasonal binding from Fremont’s clay soils. A newly hung door that works fine in October starts sticking in June because the slab under the threshold moved. Proper shimming and anchoring at installation prevents most of this.
- Warped builder-grade doors from Bay Area temperature swings. Cheap hollow metal or thin fiberglass doors absorb heat on west-facing Fremont entries and warp within a few summers. We replace them with Therma-Tru or PGT units built for that exposure.
Pricing for Door Replacement in Fremont, CA
Here are honest numbers for Fremont’s market. A basic interior slab replacement runs $250 to $500. Pre-hung interior doors with hardware land at $400 to $900. Exterior entry door replacement, including fiberglass or steel unit, weather sealing, and hardware, is $1,800 to $3,500. Impact-rated or custom glass doors from CGI, CWS, or ES Windows range from $3,500 to $7,000. Add $150 to $400 if a permit and inspection are required. What moves the price: rough opening condition, whether we’re reframing, the door brand, glass options, and hardware finish. Call (682) 281-2168 for a written, line-item quote. Estimates are free.
We Also Serve Cities Near Fremont
Our Door Replacement team works throughout Fremont and the surrounding East Bay, including Newark, Union City, Hayward, and Pleasanton. If you live just outside Fremont, we’ll still make the drive and bring the same written pricing and 365-Day Done Right Promise. Call us and we’ll confirm your address over the phone.
Serving Fremont, CA - Our Local Coverage Area
We’re based in the Fremont 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 Fremont
You need a permit in Fremont if the rough opening changes size or the header is modified. A straight slab replacement in the existing opening usually does not require one. We determine this for your specific job before quoting, and we pull the permit when it’s needed. Call (682) 281-2168 and we’ll tell you which category your door falls into.
Most single-door replacements in Fremont take four to six hours on site, with the full job wrapped in one day. If reframing is required because the rough opening is out of square, add two to three hours and possibly a second visit for final inspection. We give you a written timeline with your quote.
We install Therma-Tru, PGT, CGI, CWS, and ViewLux, along with ES Windows for glass-heavy modern entries. Fremont homeowners gravitate toward Therma-Tru for fiberglass durability and PGT or CGI for impact-rated options on exposed elevations. We’ll line-item each brand and show you the real cost difference before you sign anything.
Yes, especially on older Fremont homes with thin slab doors and worn weatherstripping. A properly sealed fiberglass entry door with an insulated core reduces drafts and lowers the load on your HVAC system, which matters in Fremont’s microclimates where Mission San Jose runs hotter than the Bay-facing side. Most customers notice the difference within the first season.
Three things: a rough opening that’s out of square and needs shimming or reframing, hidden water or termite damage in the jamb or subfloor, and permit requirements triggered by structural changes. We mitigate surprises by inspecting the opening before we quote, not after. In the Warm Springs area, we replaced a warped Therma-Tru entry on a 1970s ranch where the frame was out of square from years of settling. We caught it during the quote, shimmed and re-anchored the jamb, and the final price matched the written estimate. That’s the standard on every Fremont job. Call (682) 281-2168 for your free written estimate.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Fremont.










Before
After
Before
After
Before
After