About Ontario Window Replacement: Licensed Window Pros in CA
Ontario Window Replacement works the West End of the Inland Empire out of Ontario, California, and does two different jobs under one license. One is replacing windows and doors in houses built between the citrus era and the last subdivision boom. The other is glazing tenant spaces, front offices and retail suites in a city whose economy runs on distribution.
We keep them apart on purpose. The residential estimator carries a moisture meter and a sill probe. The commercial estimator carries a profile gauge and asks who holds the lease, because that answer decides who is even allowed to authorize the work. Blending the two produces the quotes we get called in to correct, where a business owner has been promised a homeowner's warranty on a public entrance that will see two hundred cycles a day.
There are jobs we tell people not to give us. If your windows are twelve years old, the frames are sound and one sealed unit has fogged, replace nothing. Have the glass swapped inside the frame you already own.
If a landlord is obligated to repair the storefront under the lease, get that in writing before you pay anybody, us included. And if the only reason to replace is a promised energy saving, the payback on a sound window is long enough that we would rather you spent the money on attic insulation.
If you have a window project in Ontario, the fastest way to get a real number is a free on-site estimate. See every Ontario service we handle, check whether we cover Chino, CA and the rest of the West End of the Inland Empire, or go back to the Ontario Window Replacement homepage to start. You can also reach us directly on (844) 511-2320.
Credentials
- License: Licensed California contractor holding the CSLB C-17 glazing classification, the classification that covers cutting, assembling and installing glass in dwellings and in commercial structures alike
- Insurance: General liability and workers compensation in force, plus the $25,000 contractor's license bond every California licensee has been required to carry since Senate Bill 607 took effect on January 1, 2023
- Association: Storefront and entrance work detailed to the aluminum manufacturer's published shop drawings, so the framing warranty stays intact and the finish warranty is not voided by a field modification
- Warranty: Two warranty documents, never merged: one on our labor, and the manufacturer's own on the frame, the sealed glass unit and the hardware. Residential and commercial products carry different manufacturer terms and we print both
How Ontario Window Replacement works
How a job with Ontario Window Replacement runs, start to finish
Site visit first, always. We measure, look at the real condition of the work area, and ask what you are actually trying to solve — then you get an itemized free estimate in writing with materials, scope and a realistic date on it.
Once the work starts, the same crew stays on the job until it is done. We protect the surrounding area, clean up daily, and tell you the moment something under the surface changes the plan, because the alternative is a surprise invoice and nobody wants that conversation. Two warranty documents, never merged: one on our labor, and the manufacturer's own on the frame, the sealed glass unit and the hardware. Residential and commercial products carry different manufacturer terms and we print both backs the finished work.
What we will not do
We do not quote a window job over the phone, take deposits before a written scope exists, or bid work we are not set up to do properly. If your project needs a different trade, we say so and point you at someone who does it well. Losing a job is cheaper than doing one badly in Ontario.
Where Ontario Window Replacement works and who we work with
Ontario, CA first, then the surrounding communities of the West End of the Inland Empire: Chino, Chino Hills, Montclair, Upland, Pomona, Claremont, La Verne, San Dimas and more. Each of those has its own page with local detail rather than a copy of this one.
Work splits roughly between homeowners and commercial property — offices, retail, restaurants, apartment complexes and HOA boards across the West End of the Inland Empire. Start with the Ontario services, the Ontario Window Replacement homepage, or just call (844) 511-2320.
Why Ontario Chooses Ontario Window Replacement
- ✓Two estimating methods, and the quote says which one you are reading. Residential is per opening. Commercial is glazed square foot plus framing linear foot, with the after-hours premium shown on its own line instead of buried in a unit price.
- ✓We hold the CSLB C-17 glazing classification, the one that covers commercial glass. A great deal of residential window work in this region is sold by outfits that cannot legally glaze your storefront, and they rarely volunteer that.
- ✓Warranty documents are never merged. A house gets the manufacturer's residential terms. A commercial opening gets the commercial terms, which are shorter, and we would rather explain why now than have you find out in year eleven.
- ✓Permit path stated before you sign. Residential retrofit is usually over the counter. Commercial can mean plan check, an accessibility review of the path of travel, and an inspection sequence that quietly decides your schedule.
- ✓Same-day secure board-up on broken commercial glass, with the replacement lite ordered that afternoon. A boarded opening you can still trade out of beats a fast promise nobody can keep on a fabricated unit.
- ✓We will talk you out of the job when the job is wrong. A fogged sealed unit in a sound frame gets new glass, not a new window, and we quote it that way even though it is the smaller invoice.
What Ontario Customers Say
Two other companies quoted my suite off a residential price sheet and neither one mentioned the door had to keep its panic hardware. These guys measured the framing depth, told me the glass was a four week order, boarded it that night and we never closed. The invoice matched the estimate line for line.
Replaced nine windows in a 1962 house. They found dry rot under the sill in the back bedroom during the measure and put the repair on the quote instead of surprising me on install day. The west side of the house is noticeably cooler in the afternoon now.
Our front office glass took a rock from the yard. I expected a pitch for a whole new storefront. Instead they reglazed the existing frame, matched the tint, and charged about a fifth of what I had budgeted. They took the time to explain why the frame was still good.
Honest about what a window can and cannot do. I asked about the plane noise and they said laminated glass would help but would not make it quiet, which is exactly what happened. I appreciated not being sold soundproofing that does not exist.
Service Areas
Ontario Window Replacement serves Ontario, CA and surrounding communities including: