Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Ameristar Construction in Foster City, CA | Gold Star Contractors
Gold Star Contractors provides independent Ameristar service across Foster City, from impact-rated window installation to steel and aluminum fencing on lagoon-side lots, as your trusted General Contractor – Foster City. Our crews read Ameristar’s installation requirements alongside Foster City’s specific ground conditions, because the two don’t always agree. The bayfill under this city settles, shifts, and holds moisture in ways that punish door frames, window perimeters, and fence posts that were never bedded for it. Call (833) 382-8544 to schedule a free estimate, and we’ll tell you straight what’s failing and what it’ll take to fix it.

Why Foster City Residents Choose Us for Ameristar Service
We’ve worked on Ameristar entry doors, patio sliders, and fencing systems across Foster City long enough to know where the failures live. Not the generic failures. The ones specific to this city: pitted aluminum on lagoon-side fences, sticking sliders on canal streets, thresholds lifting off settling slabs. Those aren’t Ameristar defects. They’re what happens when a good product meets a young, shifting, salt-scoured site.
Noel Carranza, our owner and general contractor, grew up around Anaheim’s older tract homes and spent his twenties doing concrete, framing, and finish carpentry across Orange County before building this operation. He’s seen enough rough openings pulled off square to know why a door binds. One call, done right – that’s the only way he knows how to run a job. We bring that same eye to every Ameristar installation and repair in Foster City.
We’re an independent contractor, not a manufacturer-authorized dealer. That matters. We’re free to tell you when a door should be replaced, when a frame should be repaired, and when the problem is actually the slab underneath. No brand script. Just what the site tells us.
Styles & brands we work with







Common Ameristar Construction Problems We Solve in Foster City
- Corrosion and galvanic pitting on Ameristar steel door frames and aluminum fence panels. The salt-laden fog off San Francisco Bay settles on everything here, and it doesn’t rinse off. Over a few years, we see pitting around hinges, at panel seams, and along fence rails on lagoon-side streets. We replace rotted hardware with corrosion-resistant equivalents and treat salvageable frames before reinstalling.
- Threshold and sill rot where Ameristar entry doors meet settling slabs. Foster City’s engineered fill compacts unevenly. When a slab edge drops, the door threshold loses contact and wind-driven rain off the lagoon wicks underneath. We pull the unit, sister or shim the rough opening, rebuild the sill flashing, and reset the door with a positive drainage slope.
- Racking and binding of Ameristar sliding patio door tracks. Bayfill lots don’t stop settling at the property line. On canal streets, we regularly see sliders that were square at install bind within a decade. The track torques, the rollers wear flat, and the panel drags. We correct the opening before we touch the rollers, or the new hardware fails the same way.
- Water intrusion at Ameristar window and door perimeters. Most of Foster City’s housing is 1960s – 1970s construction with the original flashing and weather sealing. Those materials were never meant for a bayfront exposure. When we install impact-rated Ameristar windows, we strip the old perimeter, upgrade the flashing detail, and seal for wind-driven rain, not just gravity.
- Loose or leaning Ameristar fence posts in saturated bayfill. Lagoon-side yards hold groundwater close to the surface. Posts set shallow in wet fill loosen fast. We set new posts deeper, backfill with drainage stone, and use corrosion-resistant brackets where the rail meets the post.
Ameristar Service in Foster City: What Local Conditions Mean for Your Equipment
Foster City is a master-planned lagoon city built almost entirely on engineered fill dredged from San Francisco Bay in the 1960s and 1970s. Every house, every street, every Ameristar rough opening sits on young, artificial, moisture-sensitive ground. That’s not true in San Mateo. It’s not true in Belmont. It’s true here, on every single lot. What that means for Ameristar owners is this: the slab under your entry door was poured on fill that has been settling, unevenly, for fifty years now. On lagoon-side streets near the levee, we’ve seen doors bind and thresholds leak for reasons that have nothing to do with the door and everything to do with the ground beneath the sill. A new Ameristar door over a torqued or settled rough opening fails just as fast as the old one. The fix starts with the framing, the flashing, and the drainage plane, then the door goes in. We read it that way because Foster City leaves us no choice.
Ameristar Models & Products We Service in Foster City
We service Ameristar entry doors and steel-frame door systems, patio and sliding glass doors, aluminum and steel fencing, and impact-rated window and door lines. For hardware, we use genuine Ameristar replacement hinges, rollers, and weather seals where they’re still available. Where the OEM part has been discontinued, we move to proven aftermarket equivalents and we tell you which is which before we install. For faster turnaround in Foster City, we keep common Ameristar roller sets, hinge kits, weather seals, and fence brackets in our local inventory, so we’re not waiting on a warehouse in another state when a slider needs rebuilding before the rainy season. Impact-rated Ameristar window and door lines are a core part of our brand work here, and we’ve earned the kind of Ameristar sales & service reputation that comes from fixing what other crews missed.
See the difference
Before
After
Before
After
Before
AfterAmeristar Service Pricing in Foster City
Pricing depends on scope, condition, and access, but these are honest ranges for Ameristar work in this market:
| Service | Typical Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Aluminum Fence Installation | $4,000 – $10,000 |
| Roof Repair | $400 – $1,800 |
| Roof Replacement | $8,000 – $20,000 |
What drives the number in Foster City is usually substrate condition. A door replacement on a stable opening is straightforward. A door replacement that requires rough-opening correction, new flashing, and drainage work is a different job, and we quote it that way. Every estimate is free, line-itemed, and site-specific. Call (833) 382-8544 and we’ll get you an exact number for your property.
Serving Foster City, CA — Our Local Coverage Area
We’re based in the Foster City area and know this community well, and we also provide Redwood Shores Ameristar service. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Ameristar Construction in Foster City
The bayfill underneath Foster City settles unevenly over decades, and that movement torques the rough opening around the door. The track racks, the rollers wear on one edge, and the panel starts dragging. The fix is to correct the opening and then rebuild the track assembly, not just swap rollers. Call (833) 382-8544 for an exact assessment – the estimate is free.
Yes, and faster than you’d expect. The fog off San Francisco Bay carries salt that settles on metal surfaces and sits there through the dry season. On lagoon-side streets, we see pitting on Ameristar fence rails and hinge corrosion within a few years. Regular washing and corrosion-resistant hardware help, but the real solution is using the right finish and fasteners from the start.
They’re a strong fit, with one condition. The glass and frame can handle the wind load, but the perimeter flashing and sealing details from the 1960s – 1970s original build usually can’t. We upgrade the rough opening, flashing, and drainage plane whenever we install impact-rated Ameristar windows here, so the performance of the window isn’t wasted on a leaky perimeter.
Yes, and that’s a job we do regularly in Foster City. We pull the old unit, clean out the rot, shim or sister the rough opening to level, rebuild the sill flashing with a positive drainage slope, and only then set the new door. Skipping the substrate work just transfers the problem to the new unit. Call (833) 382-8544 for a free estimate on your exact opening.
Look at the gap around the panel. If it’s tight on one side and wide on the other, the rough opening has moved and the framing is the issue. If the door is square in the opening but the hardware is corroded or the seals are flat, it’s the door. We diagnose both during the free estimate, so you’re not paying for work that doesn’t address the cause.
Service Areas Near Foster City
We serve Foster City and the surrounding communities, including neighborhoods and cities across the bayfill corridor. For clients in Ameristar service in Highlands-Baywood Park, we bring the same bayfill and salt-air expertise. Coastal owners looking for Ameristar service in Half Moon Bay call us for impact-rated windows and corrosion-resistant fencing. Our Foster City service area pages cover the full scope of our remodeling and construction work here.
Book Your Ameristar Service in Foster City Today
Get an honest read on your Ameristar doors, windows, or fencing in Foster City. We come out, assess the opening, the substrate, and the hardware, and give you a line-item estimate that says exactly what’s needed. Call (833) 382-8544 to schedule your free estimate with a crew that knows Foster City’s ground as well as Ameristar’s products.
Written by Noel Carranza, Owner & General Contractor at Gold Star Contractors, serving Foster City and the surrounding bayfill communities.