Welcome to United Builders!

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

Anlin High Performance Vinyl Windows and Patio Doors, installed by highly skilled window installers at the most competitive prices in Southern California.


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.

United Builders windows and doors

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.

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. 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

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.

Beautiful windows that cut down heat and noise from outside. Well worth the investment. Had 2 sliders and 20 windows replaced. Get so much more light in the house with these tinted windows as compared to the old tinted single pane windows I previously had.
Laura G. , Desert Hot Springs, CA


More testimonials

Just completed a 19 window install job at our home.  Excellent service, no non-sense estimate and quality CLEAN installation.  Workers are great courteous people (foreman is so-so). Highly recommend. Prices were 25-35% better than other estimates.

Russ C. , Walnut, CA