Welcome to United Builders!
We are a General Contractor, not just a window installer, so we do the jobs other companies don’t want to do. For example: carpentry (replacing rotten wood), new headers, drywall , stucco, skywall windows , opening up walls, and reducing/enlarging window sizes. If you don’t want to continue to pay high energy bills & don’t want to overpay for new windows, then United Builders can give you all the benefits of highly energy efficient windows at better prices than our competitors. How do we do that? We are a family owned company with 19 years in business, without the huge advertising costs. We don’t pay the industry average of 15-20% sales commission, since the owner gives all estimates himself. Read our nearly 500 reviews on Home Advisor.
WHY CHOOSE UNITED BUILDERS?
Superior Quality and Best Prices!
So what makes United Builders special when it comes to Residential & Commercial Window & Door Replacement in Rancho Cucamonga, Chino Hills & Fontana? Most companies must pass their advertising costs and commissions to the customer to recoup expenses. Because we pay no sales commissions or hefty advertising expenses, we can save you as much as 20-50% over our competitors for the exact same products! Rest assured, we sell and install only high-quality, energy-efficient products of windows & doors, not low-grade builder materials.

Quality Products & Service
Our goal at United Builders is to provide you with high-quality products, professional and courteous service, and a generally pleasant experience – after all, YOU are our best form of advertising! United Builders offers window replacement services in southern California including the Inland Empire. If you are looking to replace your Rancho Cucamonga, Fontana or Chino Hills home windows or doors, look no further than United Builders.
Recent Projects
Please browse through recent Window and Door replacement projects from United Builders.
Window Installation Project
Window Installation Project Take a look at [...]
Window Installation Project
Window Installation Slider windows are a great [...]
Window Replacement Installation
Window Replacement Installation Skylight window installation experts [...]
Variety of Products
At United Builders we also install special products of residential and commercial windows and doors such as bay windows and vinyl greenhouse windows. We have a variety of options to meet all your window or door needs. Check with your sales representative to discuss your exact needs. At United Builders we have solutions for almost any of your window or door needs.
We Offer Financing
We now offer financing on our Window & door replacement in Rancho Cucamonga, Chino Hills & Fontana. This special program offers 100% financing, no up-front fees of costs, same as cash, and no prepayment penalties. Please call for more information rewarding this special offer. Learn more…
Professional Installation
United Builders has installers with many years experience in the window installation business, which guarantees consistency and a quality job – every time. At United Builders we only use professional grade products. We believe that by offering superior products our customers will remain satisfied for many years.

Family Owned
United Builders is a family owned company committed to excellence and doing the job right, the first time. Over the years we have assembled a team of well paid and experienced master carpenters. Our reputation speaks for itself, 75% of our new business comes directly from customer referrals. United Builders is dedicated to Competitive Pricing and Superior Customer Service.
Check out this beautiful new window installation. While you can’t see the window on the left, you bet this new window trio installation is just what this home needed. As you can see, the new windows are a beautiful addition to this home. With them, the homeowners can enjoy their newly boosted curb appeal and all the other amazing features that come with them. They allow for immense natural lighting into the home and energy-efficiency features. Ask us about what makes our windows energy-efficiency today! Call (909) 969-8976 or visit our website https://unitedbuilders.info.
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#unitedbuilders#custom#vinylanddualpanewindows#bestwindowdoor#homerenovation#bestproject#windowreplacement#energyefficientwindow#window#satisfactionguaranteed#detailoriented#familyowned#doorreplacement#homeproject #newhomelook#renovations#anlin#bestwindow#energyenfficientwindows#construction#finestresults#monteverdewindowsanddoors#consultants#homeimprovement #finehomebuilding#windowtips
We are a General Contractor, not just a window installer, so we do the jobs other companies don’t want to do. For example: carpentry (replacing rotten wood), new headers, drywall, stucco, sky wall windows, opening up walls, and reducing/enlarging window sizes. If you don’t want to continue to pay high energy bills & don’t want to overpay for new windows, then United Builders can give you all the benefits of highly energy efficient windows at better prices than our competitors. Ask us how today! Call (909) 969-8976 or visit our website https://unitedbuilders.info.
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#unitedbuilders#custom#vinylanddualpanewindows#bestwindowdoor#homerenovation#bestproject#windowreplacement#energyefficientwindow#window#satisfactionguaranteed#detailoriented#familyowned#doorreplacement#homeproject #newhomelook#renovations#anlin#bestwindow#energyenfficientwindows#construction#finestresults#monteverdewindowsanddoors#consultants#homeimprovement #finehomebuilding#windowtips
When you work with United Builders, you are getting the best of the best. Check out this installation job we completed for these homeowners. Our team worked efficiently to complete the process while maintaining quality. If you're looking for a trusted team of hard-working and experienced windows experts, we're here for you. We combine our top-quality installations with excellent window products so our customers can get the best. For more information, call (909) 969-8976 or visit our website https://unitedbuilders.info.
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#unitedbuilders#custom#vinylanddualpanewindows#bestwindowdoor#homerenovation#bestproject#windowreplacement#energyefficientwindow#window#satisfactionguaranteed#detailoriented#familyowned#doorreplacement#homeproject #newhomelook#renovations#anlin#bestwindow#energyenfficientwindows#construction#finestresults#monteverdewindowsanddoors#consultants#homeimprovement #finehomebuilding#windowtips
Looking for a window contractor to install your dream sky wall window? If so, you may be finding that’s it rather difficult to find someone who can get the job done. Unfortunately, for many homeowners, there aren’t many windows installation companies that have the tools and experience to be able to install sky walls. But don’t you worry! As part of our commitment to helping homeowners make amazing home improvements in the window department, we are one of the few that actually can install sky walls! Reach out to one of our team members today to get started! Call (909) 969-8976 or visit our website https://unitedbuilders.info.
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#unitedbuilders#custom#vinylanddualpanewindows#bestwindowdoor#homerenovation#bestproject#windowreplacement#energyefficientwindow#window#satisfactionguaranteed#detailoriented#familyowned#doorreplacement#homeproject #newhomelook#renovations#anlin#bestwindow#energyenfficientwindows#construction#finestresults#monteverdewindowsanddoors#consultants#homeimprovement #finehomebuilding#windowtips
Take a look at this window replacement job we were recently hired to do. The homeowners wanted us to replace these unique sets of windows. At United Builders, we pride ourselves on delivering homeowners precisely what they need and want. Whether you need a standard set of windows or a set unlike any other, we're here for you! Don't waste another moment shopping around different window installation companies when we've got precisely what you need. For more information, call (909) 969-8976 or visit our website https://unitedbuilders.info.
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#unitedbuilders#custom#vinylanddualpanewindows#bestwindowdoor#homerenovation#bestproject#windowreplacement#energyefficientwindow#window#satisfactionguaranteed#detailoriented#familyowned#doorreplacement#homeproject #newhomelook#renovations#anlin#bestwindow#energyenfficientwindows#construction#finestresults#monteverdewindowsanddoors#consultants#homeimprovement #finehomebuilding#windowtips