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 Rancho Cucamonga, CA | Square One Builders
We provide independent Ameristar construction service across Rancho Cucamonga, from patio covers and room additions to window installations and garage conversions. The thing that sets our work apart here is simple: we’ve spent over a decade navigating this city’s fire zone codes and HOA design review boards, so we know which Ameristar products hold up in the foothills and which ones need reinforcement. Call (877) 688-9930 for a straight answer on your project.

Square One Builders is a General Contractor – Rancho Cucamonga based full-scope general contractor, not a manufacturer-authorized dealer. We source Ameristar products because they offer solid value at multiple price points, and we install them with the same accountability we bring to every system in your home. From the ground up, one contractor, every system.
Why Rancho Cucamonga Residents Choose Us for Ameristar Service
Most contractors in Rancho Cucamonga know tract homes. Few know how Ameristar products actually perform inside them. We’ve worked with the R-Series, M-Series, E-Series, and V-Series long enough to know their failure points before they become your problem. That’s the difference between a crew that installs and a crew that understands.
Brent Calloway, our owner, grew up around carpenters who never wasted a board. That instinct carries into how we approach Ameristar work in this city: we repair what’s worth repairing, replace what isn’t, and never push a full teardown when a spot fix does the job. Rancho Cucamonga homeowners appreciate that. They also appreciate that we know the plan-check process at City Hall well enough to keep your permit moving instead of stalling.
We spec the right material for your project, not whatever’s left in the warehouse. That matters when you’re deciding between OEM Ameristar parts and quality aftermarket equivalents for non-structural components.
Styles & brands we work with







Common Ameristar Construction Problems We Solve in Rancho Cucamonga
- R-Series patio cover fastener fatigue. Santa Ana winds coming down the Cajon Pass hit Rancho Cucamonga harder than most of the valley floor. We regularly see R-Series patio covers with rattling panels and loose ledger board connections after a single windy season. If caught early, we reinforce the fasteners. If ignored, that cover becomes a liability.
- M-Series room addition stucco cracking. Triple-digit summer heat causes thermal expansion at panel joints. Homeowners often assume it’s structural. It usually isn’t, but it does need to be sealed correctly or water gets in during winter rain. We’ve fixed enough of these to know the difference in about ten minutes.
- E-Series window seal failures in foothill homes. ZIPs 91737 and 91739 sit in a high fire severity zone. UV exposure is relentless, and ignition-resistant material degradation happens faster here than in Ontario or Fontana. Seal failures show up as fogging between panes. Replacement is usually the right call, not a patch.
- V-Series garage conversion moisture buildup. Rancho Cucamonga’s mild winters create condensation inside under-ventilated garage conversions. We see mold on drywall and musty odors that trace back to improper permitting or skipped ventilation ducting. A properly permitted V-Series conversion includes the airflow design most DIY jobs miss.
- Roof-to-wall flashing gaps on Ameristar additions. Clay tile roofs are standard in Rancho Cucamonga’s 1980s-2000s tract housing. When an Ameristar addition ties into an existing tile roof, the flashing detail has to be right or leaks start at the transition. We inspect this first on every home addition.
Ameristar Service in Rancho Cucamonga: What Local Conditions Mean for Your Equipment
Here’s the thing most out-of-town Ameristar installers miss: Rancho Cucamonga’s foothill neighborhoods in ZIPs 91737 and 91739 fall under high fire severity zones. That means any Ameristar room addition or ADU built north of the 210 Freeway, up toward the San Gabriel Mountains, must comply with Chapter 7A of the California Building Code. Ignition-resistant materials are not optional. This is a mandate that doesn’t apply to nearby valley-floor cities like Ontario or Fontana, and it changes everything about how we spec siding, windows, and venting on Ameristar projects in this city.
Take the Upland Ameristar service area’s Alta Loma neighborhood near Heritage Park. We repaired an Ameristar R-Series patio cover there after Santa Ana winds had loosened the ledger fasteners. We replaced them with ignition-resistant hardware and reinforced the connections to satisfy the city’s fire zone requirements. The homeowner got wind resistance and code compliance in one visit. That’s what working in Rancho Cucamonga demands: you can’t separate structural integrity from fire code up here.
Our Ameristar sales & service approach is built around these local realities. For full details on where we work, see our Rancho Cucamonga service area page.
Ameristar Models & Products We Service in Rancho Cucamonga
We service the full Ameristar lineup: R-Series patio covers, M-Series room addition components, E-Series windows, and V-Series garage conversion packages. When structural components need replacement, we source OEM Ameristar parts first. For non-structural items, we use quality aftermarket equivalents to keep your cost down without sacrificing performance.
What we keep on hand for Rancho Cucamonga jobs: ignition-resistant fasteners and hardware for fire zone compliance, flashing materials for clay tile roof transitions, and ventilation components for V-Series and M-Series projects. That local stock means less waiting when your project hits the permit stage or mid-install reality check.

See the difference
Before
After
Before
After
Before
AfterAmeristar Service Pricing in Rancho Cucamonga
Pricing depends on scope, existing conditions, and where you live in the city. Foothill properties with Chapter 7A requirements will cost more than valley-floor homes because compliant materials are more expensive. Here are the ranges we work within for the three Ameristar-related services we handle most:
| Service | Price Range |
|---|---|
| Roof Repair | $400 – $1,800 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
These numbers reflect Rancho Cucamonga’s plan-check fees, HOA design review requirements, and fire zone material costs. A free estimate from us includes a written line-item breakdown, so you see exactly where your money goes. Call (877) 688-9930 to schedule yours.
Serving Rancho Cucamonga, CA — Our Local Coverage Area
We’re based in the Rancho Cucamonga 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 – Ameristar Construction in Rancho Cucamonga
Yes. If your home is in ZIP 91737 or 91739, any patio cover attached to the house must use Chapter 7A ignition-resistant materials and pass the city’s fire zone plan-check. Detached covers under 120 square feet may not need a permit, but attached structures almost always do. Call (877) 688-9930 and we’ll tell you what applies to your specific address.
The triple-digit summer heat causes thermal expansion at M-Series panel joints, which leads to stucco cracking if the seams weren’t installed with proper movement allowance. It’s rarely structural, but it does need sealing to prevent water intrusion during winter rain.
Yes, with the right glazing and frame materials. E-Series windows can meet Chapter 7A requirements when specified correctly. The catch is that seal failures from UV exposure happen faster in foothill homes, so budget for eventual replacement if you’re building up there.
ADU Construction runs $90,000 to $220,000 depending on size, site conditions, and fire zone compliance requirements. Foothill properties with Chapter 7A mandates trend toward the higher end. Call (877) 688-9930 for an exact quote, estimates are free.
Santa Ana winds from the Cajon Pass put sustained lateral pressure on roof-mounted structures and patio cover connections. Fastener fatigue at the ledger board is the most common failure we see after a strong wind season, and it’s repairable if caught before the connection fully detaches.
Service Areas Near Rancho Cucamonga
We serve Rancho Cucamonga and the surrounding communities, including Corona, La Verne, Montclair, Claremont, and Norco. Each has its own building department quirks and code amendments. If you’re just over the border, we likely work in your area. See Ameristar service in Pedley or Ameristar service in San Antonio Heights for neighborhood-specific details.
Book Your Ameristar Service in Rancho Cucamonga Today
Start from square one, build it right. Call (877) 688-9930 to schedule your free estimate. We’ll walk your property, check the existing Ameristar installation, and give you a straight answer on what needs fixing and what doesn’t.
Written by Brent Calloway, Owner at Square One Builders, serving Rancho Cucamonga since 2011.