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(877) 688-9930
Our Office9888 Bolsa Avenue Unit 77
Corona, CA 92683
Same-Day Service AvailableWe dispatch the nearest available technician. Emergency calls prioritized.
Free, No-Obligation EstimateWe assess the job and give you a written price before any work begins.
Licensed, Insured & GuaranteedEvery job is backed by our workmanship warranty. You're fully protected.

Contact Square One Builders – Free Construction Estimate in Westminster

Call Square One Builders at (877) 688-9930 for a free construction estimate in Westminster, CA. When you call, you’ll reach a live coordinator who listens first, asks a few questions about your project, and gets you scheduled with our Westminster team. No hard sell, no pressure, just a straight conversation about what you’re planning and whether we’re the right fit. We’re open Monday through Friday from 7:00 AM to 7:00 PM, and Sunday from 7:00 AM to 7:00 PM.

Call (877) 688-9930

What Happens When You Call

We keep the process simple because you probably already have enough on your plate. Here’s exactly what to expect from your first call to final walkthrough.

Step 1: You Call and Talk to a Coordinator

A live coordinator answers and takes down the basics: your name, project location in Westminster or a nearby city, and what kind of work you’re considering. They’ll ask a few questions about scope and timing so we can match you with the right people. No scripts, no robotic intake.

Step 2: We Schedule Your Free Assessment

We’ll find a time that works for you during our operating hours. The assessment is free, and you’ll get a confirmation so you know exactly who’s coming and when. If something changes on your end, one call updates everything.

Step 3: You Receive a Written, Line-Item Estimate

After we look at the project, you get a written estimate that breaks down labor, materials, and timelines. Builders we work with may use brands like CertainTeed, Owens Corning, or IKO depending on the project, and every line is explained so you can compare apples to apples. You’ll know the full scope before you commit to anything.

Step 4: We Complete the Work and Walk You Through It

Once you approve the estimate, we schedule the work and keep you updated throughout. At the end, we walk the site with you to make sure everything matches the written scope. Our workmanship warranty covers what we build, and we stand behind it.

Why Westminster Homeowners Call Us First

We’ve been serving Westminster and surrounding Orange County communities since 2014, and we’ve learned what local homeowners actually care about when they’re vetting a construction company. Here’s what keeps people calling.

  • Local familiarity with Westminster properties. We know the older housing stock in neighborhoods across Westminster, including the tract homes that dominate much of the city and the newer builds along the eastern edges. That local knowledge means we can spot potential issues early instead of discovering them mid-project.
  • Licensed and insured pros required. Every pro working under the Square One Builders name is required to hold the license and insurance their state mandates for the work they perform. You’re not gambling on unverified labor, and we’re happy to provide documentation before any project starts.
  • Transparent written pricing with no hidden change orders. The estimate you approve is the scope we build to. If something unexpected comes up, we discuss it with you before adding anything. No surprise line items at the end, no vague “miscellaneous” charges.
  • Workmanship warranty on completed projects. We back our construction work with a workmanship warranty so you have a clear path if something doesn’t hold up. We don’t disappear after final walkthrough; we’re still here.

Our Service Area Around Westminster

We’re based in Westminster and regularly serve the surrounding Orange County cities. Typical service reach includes:

  • Westminster – our home base, all neighborhoods
  • Midway City – including the unincorporated pockets
  • Stanton – north of the 22 freeway
  • Garden Grove – from Little Saigon west to the 405
  • Cypress – south of the 91
  • Fountain Valley – along the 405 corridor
  • La Palma – northeast Orange County
  • Huntington Beach – coastal and inland zones
  • Anaheim – including the Colony district
  • Buena Park – west of the 5 freeway
  • Santa Ana – from downtown to the northern edge
  • Fullerton – south of the 91

If you’re in a neighboring city not listed here, give us a call anyway. If we can get to you, we’ll tell you straight.

Frequently Asked Questions – Booking & Estimates

Call or Request a Callback

Ready to get a real number for your Westminster construction project? Call (877) 688-9930 during our business hours: Monday through Friday 7:00 AM to 7:00 PM, Sunday 7:00 AM to 7:00 PM, closed Saturday. If you’d rather leave a message, we’ll get back to you on the next business day. No pressure, no obligation, just a free estimate from a team that’s been serving Orange County since 2014.

Written by the team at Square One Builders, serving Westminster, CA since 2014.

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