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 San Mateo, CA | Gold Star Contractors
We provide independent Ameristar construction and equipment service across San Mateo, from the 94401 bungalows near downtown to the bayfront lots in 94404. The thing that makes our Ameristar work different here is simple: we build and service around San Mateo’s discretionary planning review and its soil gradient, not around a generic checklist. If you need Ameristar equipment, cabinets, roofing, or full remodel scopes handled by one accountable contractor, call (833) 382-8544 for a free estimate.

Why San Mateo Residents Choose Us for Ameristar Service
We have worked on Ameristar equipment and construction scopes across San Mateo long enough to know how these units and assemblies actually behave in a marine climate. That matters more than a badge. We are an independent contractor and are not authorized, sponsored, or endorsed by Ameristar, so our credibility comes from the work itself, not a manufacturer label. Noel Carranza, our owner and general contractor in San Mateo, spent years doing concrete work and finish carpentry across Orange County before building this operation, and he brings that hands-on perspective to every Ameristar-related job we take here. We specify the brand, manage the install, and stand behind the result.
Most San Mateo homeowners do not need a vendor. They need one contractor who understands Ameristar equipment and this city’s permit culture, its clay and bay fill, and its older housing stock. That is why homeowners call us. One contractor. Every system. No handoff gaps.
Styles & brands we work with







Common Ameristar Construction Problems We Solve in San Mateo
- Corroded condenser cabinets and lost coil fins on the bay side. On 94404 properties near the Foster City edge, salt-laden fog and chronic grade moisture attack Ameristar M4AC and M4SC condensing units. We regularly see coil fin loss show up years before the compressor fails, and on more than a few units the cabinet is rusting through at the base rail while the top still looks fine. We replace coils with OEM Ameristar parts and re-level the pad before the line set takes damage.
- Short return air on Ameristar furnaces in tight closet installs. The pre-war and mid-century homes in 94401 and 94402 rarely gave HVAC equipment the space it needs. Ameristar M801P and M951P furnaces stuffed into original closets run hot, trip limits, and cook blower motors. We rebuild the closet with proper return-air sizing and replace the blower and limit with OEM parts.
- Settled condenser pads on clay and expansive soil. San Mateo’s heavy clay toward the hills and old bay fill on the flats both move with the seasons. Ameristar condenser pads rack out of level, which stresses refrigerant line sets and flare connections. On hillside lots we see units leaning several degrees within two or three wet winters.
- Rot at sills and bottom rails on Ameristar steel entry and garage doors. Winter rain ponds at thresholds on San Mateo’s stucco homes, especially where original flashing was never installed correctly. We see this constantly on Spanish and Mediterranean stucco houses in 94401 and 94402. The fix often involves pulling the door, adding flashing, and reinstalling with proper drainage.
- Cabinet and counter scope planning that ignores San Mateo’s permit review. Ameristar cabinets and full kitchen remodels on non-conforming additions frequently need reconciliation at permit time. We plan the cabinet layout and equipment path so the project clears the city’s submittal culture without gutting the schedule.
Ameristar Service in San Mateo: What Local Conditions Mean for Your Equipment
Here is the thing most contractors miss when they work in San Mateo. This city is built out. There are no new subdivisions going in. Nearly every project is an addition, an ADU, or a second-story remodel on a narrow lot between El Camino Real and the hills, and almost all of it has to clear the city’s discretionary planning review before a building permit is even issued. That review is not just paperwork. It means equipment siting, roof penetration, and exterior changes get scrutinized as part of the design. Put an Ameristar condenser on the wrong side of a lot with a neighbor’s window six feet away, and you will lose weeks to plan revisions. Run a roof penetration through an area the planner flagged for an ADU setback, and the whole scope changes. We plan for this from the first site visit because we have been through it enough times to know what San Mateo’s submittal culture rewards and what it stalls. That is the difference between a contractor who knows the city and one who just knows the brand.
On a 1950s ranch tract home off the flats in 94403, we opened a cramped kitchen wall for a full remodel and found the Ameristar furnace closet had been starved of return air for years, with a blower motor already cooked and a limit switch tripping. We rebuilt the closet with proper return sizing, replaced the blower and limit with OEM Ameristar parts, and tied the new cabinet layout to a corrected condensate and line-set path so the kitchen and the equipment both worked.
Ameristar Models & Products We Service in San Mateo
We service Ameristar M4AC and M4SC condensing units, M4AH and M4PH air handler series, M801P and M951P gas furnaces, and Ameristar garage door and steel entry door lines. On parts, we use OEM Ameristar where it matters: compressors, control boards, blower motors, and coils. For commodity items like capacitors and contactors, we stock quality aftermarket equivalents so we are not waiting on a truck when your furnace is down. On older Ameristar condensers in San Mateo, we tell owners honestly when a coil-and-compressor repair is throwing money at a unit that a change-out would beat. We would rather lose a small repair ticket than sell you a repair that fails in eighteen months.
See the difference
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AfterAmeristar Service Pricing in San Mateo
Pricing for Ameristar-related construction and equipment work in San Mateo depends on scope, access, and what the planning review requires. The table below shows our current line-item ranges for the services homeowners ask about most.
| Service | Price Range |
|---|---|
| Full Kitchen Remodel | $14,000 – $45,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Roof Replacement | $8,000 – $20,000 |
| Roof Repair | $400 – $1,800 |
What drives cost in San Mateo most often is the site itself: clay soil on a hillside lot adds pad and drainage work, a 1920s bungalow with knob-and-tube adds electrical scope, and a discretionary review can add design revisions before a permit issues. Our free estimate includes a site visit, a written line-item scope, and an honest read on what the city will require. Call (833) 382-8544 to schedule yours.
Serving San Mateo, CA — Our Local Coverage Area
We’re based in Foster City and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Ameristar Construction in San Mateo
Yes, and often more than homeowners expect. San Mateo’s discretionary review process means equipment siting, roof penetrations, and exterior changes get evaluated as part of the design before a building permit issues. We have seen condenser placement stall a project for weeks because it was not planned around the review criteria. The fix is to build the review into the schedule from day one. Call (833) 382-8544 and we will walk your project through what the city actually requires.
Salt-laden fog and chronic moisture at grade on 94404 properties accelerate corrosion on Ameristar M4AC and M4SC condenser cabinets and coil fins. Coil fin loss typically shows up years before compressor failure, so a unit that looks rough outside may still have a strong compressor. The practical answer is to address corrosion early and keep the pad level so the line set is not stressed. We can inspect your unit and tell you whether repair or replacement makes sense.
Yes, but the foundation needs to be checked for differential settlement first. Pier-and-post systems on San Mateo’s clay and bay-fill soils move over time, and a cabinet run installed on an unlevel floor will rack and show gaps within a year or two. We shim and level as part of the install, and when there is real movement we bring in a foundation assessment before the cabinets go in.
It depends on the blower motor, heat exchanger, and the closet’s return-air situation. On many 1920s and 1930s homes downtown, the closet was never sized for modern equipment, so the furnace runs hot and the blower fails early. If the heat exchanger is sound and the return air can be corrected, an OEM Ameristar blower and limit replacement often makes sense. If the exchanger is compromised, replacement is the better money. We will tell you which one you are looking at when we inspect it. Call (833) 382-8544 for an honest evaluation.
For homes near Highlands-Baywood Park, we recommend roof systems that handle chronic moisture and salt exposure well. GAF, CertainTeed, and Owens Corning all make architectural shingle lines that hold up in San Mateo’s marine air, and we are certified to install all three. The key is proper underlayment and flashing detail, especially around roof penetrations for Ameristar equipment and any planned ADU. Call (833) 382-8544 and we will spec the right system for your roof.
Service Areas Near San Mateo
We serve San Mateo and the surrounding cities, including Burlingame, Hillsborough, Foster City, Belmont, and San Carlos. For Ameristar work specifically in Burlingame, see our Ameristar service in Burlingame page. For Hillsborough, visit Ameristar service in Hillsborough. We also cover the broader San Mateo service area and all Ameristar sales & service scopes throughout the Peninsula.
Book Your Ameristar Service in San Mateo Today
We are an independent Ameristar contractor serving San Mateo, and we would rather show you the work than talk about it. Call (833) 382-8544 to schedule a free estimate. One call, done right – that is the only way we know how to run a job.
Written by Noel Carranza, Owner & General Contractor at Gold Star Contractors, serving San Mateo and the surrounding Peninsula.