







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in Fremont, CA | Elmstead Remodeling
We provide independent CGI service across Fremont, from walk-in shower installations to window replacement and ADU construction with a General Contractor in Fremont. The one thing that makes our CGI work here different is that we plan every installation around Fremont’s specific seismic and soil realities, not around a generic spec sheet. Graham Stein and our crew have been rebuilding CGI shower enclosures, window assemblies, and railing systems in Fremont’s 1960s – 70s tract homes and older Mission San Jose district properties for years, and we understand how these products actually behave when the ground shifts. Call (949) 850-9896 to talk through your project.
Why Fremont Residents Choose Us for CGI Service
Most contractors in Fremont treat a CGI window or shower enclosure as a straightforward swap. We don’t, because Fremont’s housing stock doesn’t allow for straightforward. Graham Stein learned framing and finish work at Los Angeles Trade-Technical College, where instructors expected you to read plans before touching a tool, and that habit carried into how we approach every CGI system here: we look at the wall behind the window, the framing under the shower pan, and the foundation movement before we touch the product. We carry genuine CGI components when tolerances and thermal breaks depend on them, and high-quality aftermarket seals and hardware where the specification is non-proprietary. Elmstead Remodeling is an independent contractor with no authorization or warranty relationship with CGI – we simply know this product family through hundreds of local installs across Fremont. For broader CGI sales & service information, we keep our process consistent with how we handle every CGI job in the Bay Area.
Styles & brands we work with







Common CGI Construction Problems We Solve in Fremont
- Seal failure and pitting on pre-1994 CGI aluminum frames. Fremont’s single-era buildout of 1960s – 70s tract homes means thousands of original CGI window frames have now spent 50+ years cycling through hot, dry summers. The seals dry out, the sills pit, and heat intrusion gets worse every August. We rebuild the sill, replace the seals, and reset the frame rather than tearing out a wall that’s still structurally sound.
- Binding shower enclosure glass and hinges from slab movement. The Altamont-zone adobe clay in Fremont’s transitional hillside neighborhoods shrinks and heaves seasonally. When the slab moves, a CGI Solstice enclosure’s glass panels and hinges take the stress. We see cracked hinges and doors that no longer close square in homes across Mission San Jose and the eastern hills. The fix starts with re-leveling the pan, not just swapping hardware.
- Corroded roller and latch hardware near the bay edge. The western end of Fremont gets marine air mixing with inland heat, and that combination eats CGI door and window hardware faster than it does a few miles east. We replace rollers, latches, and tracks with corrosion-resistant aftermarket components designed for exactly this microclimate.
- Loose railing and structural glass anchors after seismic activity or foundation adjustment. Cripple-wall homes throughout Fremont shift. When they do, CGI railing anchor points can lose tension. Left unchecked, that’s a safety and water-intrusion risk. We re-tension anchors and verify load ratings before anything gets re-caulked.
- Shower enclosures that leak after partial retrofit work. We regularly follow other contractors who installed a new CGI shower without addressing the settle under the pan. In Fremont, that’s a recurring call. We stabilize the framing and re-level before installing the enclosure, which is why our work holds up through the wet winters and dry summers here.
CGI Service in Fremont: What Local Conditions Mean for Your Equipment
Any habitable structure proposed within a mapped Alquist-Priolo Earthquake Fault Zone parcel in Fremont requires a licensed engineering geologist to certify that no active fault trace crosses the building footprint before the city issues a grading or building permit. That’s not a guideline – it’s a code requirement that can add weeks and thousands of dollars to a project. For a homeowner replacing a CGI thermal-broken window or adding a CGI shower enclosure as part of an ADU, it means the contractor has to coordinate the glass installation with a geotech report and the permit timeline. Most contractors who work only in Milpitas, Newark, or Sunnyvale have never managed that coordination. We have, repeatedly, including on projects off Mission Boulevard and in the hills east of 680 where the fault mapping is most restrictive. If your Fremont project sits on a flagged parcel, we plan the CGI installation schedule around the geotech certification from day one.
CGI Models & Products We Service in Fremont
We service the CGI Solstice Shower Enclosure System, the CGI thermal-broken aluminum window and door series, and CGI architectural glass railing systems. When the original system’s thermal breaks, load ratings, or tolerances depend on genuine CGI manufacturing, we use OEM components. When the specification is non-proprietary – seals, gaskets, rollers, standard hinge hardware – we use high-quality aftermarket parts that often outperform the 1980s-era originals on Fremont’s older tract homes. We keep a local stock of the seals, gaskets, and hardware that fail most often in Fremont’s climate so your service call doesn’t wait on a national warehouse. For projects outside the immediate area, see our Fremont service area coverage to confirm whether we can reach you.
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AfterCGI Service Pricing in Fremont

Written pricing before any work starts is standard on every Elmstead project, and these are the ranges you should expect for the CGI-related work we do most often in Fremont:
| Service | Fremont Price Range |
|---|---|
| Walk-In Shower Installation | $4,500 – $12,000 |
| Window Replacement | $4,500 – $15,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| ADU Construction | $90,000 – $220,000 |
What shifts the number in Fremont specifically is the foundation work – if the slab under your shower has moved with the Altamont clay, the re-leveling adds cost. If your parcel is Alquist-Priolo flagged, the geotech certification adds time and a line item. We write the scope before we start so you know exactly which of those applies. Call (949) 850-9896 for a free estimate on any of the above.
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 – CGI Construction in Fremont
Yes, if your parcel is mapped inside a fault zone, the city requires a licensed engineering geologist to certify no active trace crosses your building footprint before the permit issues. That typically adds two to four weeks and several thousand dollars to a Fremont project, and it applies to any habitable-structure work including window replacements and shower enclosures tied to a remodel. We build that timeline into the scope up front. Call (949) 850-9896 for a free project review and we’ll check your parcel status.
Almost certainly. Cripple-wall homes across Fremont’s 1960s – 70s buildout shift seasonally, especially where the Altamont-zone clay expands and contracts. The glass and hinges on a CGI shower absorb that movement, which is why doors bind or stop closing flush. The repair order matters: we re-level the pan and stabilize the framing first, then rebuild the enclosure. Replacing only the hinges without addressing the settle just repeats the failure.
Yes, and that’s our default when the frame and structural anchor points are still sound. Fremont’s older housing stock makes a full tear-out unnecessarily disruptive and costly when a targeted rebuild fixes the actual problem. In the Mission San Jose district we rebuilt a full CGI Solstice enclosure in a pre-WWII Craftsman where the original balloon framing and rubble-stone foundation had settled unevenly. After stabilizing the wall framing and re-leveling the pan, we completed our Bathroom Remodeling in Fremont by installing a new CGI Solstice enclosure with upgraded hinge hardware. The homeowner now has a shower that opens smoothly with no water intrusion despite the home’s ongoing seasonal foundation movement. Call (949) 850-9896 and we’ll assess whether yours is a repair or a replacement – the estimate is free.
Three Fremont-specific factors combine: the original 1960s – 70s tract-home frames were installed before modern seismic and thermal codes, the inland summer heat cycles are hotter and drier than Oakland or San Jose, and the western end of town adds corrosive marine air. That trio degrades seals, pits aluminum sills, and corrodes rollers and latches on original CGI units faster than in Milpitas or Union City. We rebuild those failures with materials selected for Fremont’s specific microclimate rather than a one-size-fits-all seal kit.
Yes. ADU construction over Altamont-zone clay requires over-engineered foundations – deeper footings, more reinforcement, sometimes piers – and that’s exactly the scope we plan for on Fremont additions. The CGI window, door, and shower systems we install for those ADUs get coordinated with the geotech report and the foundation design, so the glass isn’t stressed by predictable soil movement. Call (949) 850-9896 to walk through the plan for your Fremont ADU, and we’ll give you a written estimate before anything starts.
Service Areas Near Fremont
We serve Fremont and the surrounding East Bay, including Newark, Union City, Milpitas, and Hayward. For projects further south, see our CGI service in San Bernardino coverage. For Inland Empire work, our CGI service in Fontana page explains what we offer there. Each Elmstead location is independently owned and operated but holds to the same Cedarwell Care Promise standards.
Book Your CGI Service in Fremont Today
Call (949) 850-9896 to schedule your free CGI service estimate in Fremont. We’ll check your parcel against the Alquist-Priolo map, look at your foundation, and give you a written price before any work starts.
Written by Graham Stein, Owner at Elmstead Remodeling, serving Fremont since 2005.












