About Us

About Design Windows and Doors Inc.

The Design Windows and Doors Inc. Story

Design Windows and Doors Inc. is a family-owned window and door contractor serving Southern California. We were started in 2005 and have over 15 years of experience in the window industry. We are an A-rated member of the Better Business Bureau and also a member of the California League of Homeowners. We take pride in our business ethics, efficiency, and strive to always provide outstanding customer service. As such we never subcontract our installers and you can always rely on having one of our in-home installers. All of our lead installers are AAMA and RRP certified.

Our work ethic and excellent treatment of customers has allowed us to continue growing and succeeding in the industry. We are backed by 2 million in liability insurance and 1 million in workers compensation insurance. Much of our business also directly comes from repeat and referred customers.

We also offer a variety of lifetime warranties and financing through several companies, including OAC. If you need window and door services in Southern California contact us today to schedule your free estimate!

Our Owner

Joe Pentolino started Design Windows and Doors Inc. in 2005. He already had 10 years of experience in the window industry at the time and realized that he had the tools and experience to potentially make an even better company. He's been guiding Design Windows and Doors Inc. to success ever since. Joe plays a huge role shaping the direction of the company both by making major decisions and simply making sure that the company maintains the commitment to quality workmanship and exceptional customer service that it was founded on.

When he's not working he enjoys spending free time with his two Chihuahuas and traveling. He also has a strong interest in American history, especially the old west.

Recent Testimonials

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“We can't believe the difference in our home since the windows were installed”

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Kings67 of Riverside, CA

“My experience with your staff, from the salesman, the scheduler for the installation, to the installer was AWESOME.”

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Vivi of Rancho Cucamonga, CA


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AAMA Installation Masters Certified
AAMA Installation Masters Certified

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our service area

We serve the following areas

Our Locations:

Design Windows and Doors Inc.
504 S Mountain Ave
Ontario, CA 91762