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
We provide independent Ameristar service across Foster City, from equipment replacement to full roof and remodel work tied to aging Ameristar systems. The one thing that makes our Ameristar work here different: we plan every job around the city’s engineered bay fill, because a condenser pad or roof curb on 94404 ground behaves differently than it does anywhere else in San Mateo County. As an independent contractor, not a manufacturer dealer, we spec the fix that holds. Call (877) 373-9230 for a free estimate.

Why Foster City Residents Choose Us for Ameristar Service
Foster City is a particular place to work. The whole city was dredged out of San Francisco Bay in the 1960s and 70s, and that fact follows every Ameristar unit we touch. Noel Cardenas grew up around construction and has spent years in fill-built tracts like these, so when an Ameristar cabinet racks or a coil pack corrodes early, we know it’s not just age, it’s the ground and the salt air doing what they do. That changes how we anchor pads, route line sets, and seal curbs. And because we’re already working Foster City’s 94404 neighborhoods daily, response is quick and local. You can also browse our full Ameristar service page to see how we work with the brand.
Styles & brands we work with
- Kitchen remodeling
- Bathroom remodeling
- Home additions & ADU
- Roofing
- Windows & doors
- Driveway & pavers
- Fence
Common Ameristar Construction Problems We Solve in Foster City
- Salt-eaten condenser coils on bay-facing lots. The salt-laden wind off the lagoons and shoreline eats Ameristar’s copper-aluminum fin packs years ahead of inland timelines. We see it constantly on M4 package units within a few blocks of the water.
- Racked cabinets and kinked line sets from settling fill. Ameristar equipment pads set on engineered fill settle differentially. Cabinet panels pull, line sets kink, and the unit strains. We reset and anchor the pad, then correct the line set routing.
- Short-cycling furnaces on undersized returns. Original Ameristar A80 and A95 furnaces in those 1960s and 70s planned-community homes often run on return ductwork that was never sized for modern blower static. That short-cycling stresses heat exchangers and shortens equipment life.
- Corroded disconnect boxes and low-voltage faults. The high water table and persistent morning fog keep exterior disconnects, mounting bolts, and thermostat wiring damp. We find nuisance faults on builder-grade Ameristar controls that indoor cities rarely see.
- Roof curbs leaking from fog-driven moisture. On package units mounted on flat or low-slope ranch-style roofs, fog finds its way into the curb. We reseal and reflash so moisture stops migrating into the cabinet and the home.
Ameristar Service in Foster City: What Local Conditions Mean for Your Project
Every footing we dig in Foster City hits water. Not sometimes, every time. The entire city is engineered fill dredged from the Bay, and the water table sits close enough to the surface that even shallow digs turn wet. That means an Ameristar condenser pad, an equipment closet, or a roof curb on a 94404 lot has to be designed around settling ground and a high water table. The same dig a few miles inland in San Mateo hits dry, solid soil. For an Ameristar owner, that reality shows up as uneven pad settlement, cabinet racking, and line sets that bind as the fill shifts. On a lagoon-side street in Foster City’s original planned-community tracts, we worked on an Ameristar M4 package unit that was short-cycling, and the cabinet had visibly pulled as the fill under the pad settled. We replaced the salt-eaten contactor and coil, reset and anchored the equipment pad to account for the moving fill, and resealed the roof curb where fog-driven moisture had been getting in. The unit has run clean since. That’s not a repair story you’d hear from a contractor who only works inland.
Ameristar Models & Products We Service in Foster City
We service the Redwood Shores Ameristar service lines that show up in Foster City’s planned-community housing stock. That includes M4 series single-package gas/electric units, V series split-system air conditioners, A80 and A95 gas furnaces, and the S9 two-stage builder-grade furnaces common in 1990s and 2000s tract installs. Our parts approach is deliberate. When a unit is young enough that the match matters, we use OEM Ameristar parts. Once equipment passes its reliable life, we move to quality aftermarket coils, controls, and contactors that cost less and often hold up better in salt air. For roof-mounted package units, we also handle the construction side: curb replacement, flashing, sealing, and structural anchoring to keep the bay-mud movement from working against the equipment.
See the difference
Before
After
Before
After
Before
AfterAmeristar Service Pricing in Foster City
Pricing for Ameristar service and the construction work tied to it depends on what we find once we open the unit up. Here are the ranges we quote for Foster City work:
| Service | Price Range |
|---|---|
| Roof Repair | $400 – $1,800 |
| Roof Replacement & Installation | $8,000 – $20,000 |
| Small Kitchen Remodel | $9,000 – $20,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Remodel | $9,000 – $28,000 |
What drives cost: whether we’re repairing a corrosion issue or replacing a coil and cabinet together, how far the fill has moved under the pad, and whether roof or structural work is required. Every estimate is free and line-itemed so you see exactly what you’re paying for, not a round number with a shrug. Call (877) 373-9230 and we’ll walk the site and give you a real quote.
Serving Foster City, CA - Our Local Coverage Area
We serve Foster City and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – Ameristar Construction in Foster City
No. We are an independent Ameristar service provider, not a manufacturer dealer or authorized affiliate. That independence is the point. We spec the repair that will hold up on Foster City’s bay fill and salt air, not the fix that keeps a manufacturer relationship happy. When OEM makes sense, we use it. When aftermarket is the better call, we say so plainly.
Most repairs finish same-day once we’re on site. For larger work like a roof replacement tied to a package unit or a full remodel around an aging Ameristar system, the timeline depends on scope, but we’ll give you a written schedule before the job starts. Call (877) 373-9230 for a realistic timeframe on your specific situation.
We cover M4 series package units, V series split air conditioners, A80 and A95 furnaces, and S9 two-stage furnaces, which are the lines we see most often in Foster City’s original planned-community homes. If you have a different Ameristar model, call us and we’ll tell you straight whether it’s equipment we service.
Roof replacement and installation runs $8,000 to $20,000 in Foster City, and that range accounts for curb work, flashing, and structural anchoring on fill-built homes. If the existing Ameristar unit is still sound and only the roof around it is failing, roof repair alone is $400 to $1,800. Call (877) 373-9230 for an exact quote. Estimates are free.
Yes. One contractor, one contract. If a corroded Ameristar condenser has cooked its coil and cabinet together on a bay-front lot, we tell you straight that replacement is the better spend than chasing corrosion. And if that replacement means roof curb work, structural anchoring, or a remodel around the equipment, we handle all of it without handing you off to another trade. We also build the scope around Ameristar-adjacent projects like roof replacement, small kitchen remodels, and walk-in shower installations. Call (877) 373-9230 to scope the full job.
Service Areas Near Foster City
We work Foster City’s 94404 neighborhoods daily, from the lagoon-side planned tracts to the bayfront streets. We also serve homeowners in nearby Foster City service area communities and surrounding cities including San Mateo, Belmont, Redwood Shores, and Half Moon Bay. If you’re in Highlands-Baywood Park or along the coast in Half Moon Bay, we can schedule the same week.
Book Your Ameristar Service in Foster City Today
If your Ameristar equipment is short-cycling, corroding, or sitting on a pad that’s shifting with the fill, don’t wait for the next fog cycle to finish what the salt started. Call (877) 373-9230 for a free estimate and we’ll come out to Foster City, see exactly what’s happening, and give you a straight answer on repair versus replace. The material you pick today is the problem you solve, or the one you live with, ten years from now.
Written by Noel Cardenas, Owner at Garden Grove Contractors, serving Foster City and the greater Bay Area.