(909) 969-8976

Welcome to United Builders!

A General Building Contractor, Specializing In The Installation Of Custom, Vinyl and Dual-paned Windows & Doors.


20-50% Below Competition

Window Replacement Rancho Cucamonga

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

Window Replacement Chino HillsOur 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.

Variety of Products

Window Replacement Fontana 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

Patio Door Replacement Rancho Cucamonga We now offer financing on our Window & door replacement in Rancho Cucamonga, Chino Hills & Fontana. We are now pleased to offer special financing sponsored by the Gas Company. This special program 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

Patio Door Replacement Chino HillsUnited 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

Residential Window Replacement Rancho CucamongaUnited 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.

Anlin Window Systems

Window Air Infiltration

Sound Control Windows


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  • “I’m really happy with my windows. The quality of the window’s is excellent, the service was great, & I was satisfied with the price.”

    Sun City, CA
  • “United Builders is by far the best contractor I have ever used. Very honest and very fair pricing. Looking forward to doing another project in my future and calling them!”

    Covina, CA
  • “This was great and honest company to work with. Will definitely use them again if I need any windows. They had the best price and very efficient installers.”

    Buena Park, CA