Reviews for Cornerstone Windows & Patio Doors

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  • August 2024

    We just had four windows and four patio doors replaced by Cornerstone. I did receive a few estimates and decided to go with Tony at Cornerstone. Their pricing is very competitive. The crew of Antonio and Mike were punctual, polite, and cleaned up daily. Everything went smoothly from start to finish. Always felt comfortable throughout the entire project. They really do give you a hometown vibe. I was happy to support a local business. Very happy with my new windows!

  • August 2024

    Second time having Tony, Antonio, and the crew come out to replace windows. The reason we wanted Tony to come back and handle this project was because we knew we would be getting great quality of work and great customer service in an efficient manner. Not only did they do amazing work, they also spent extra time making sure the area was clean after install, which was much appreciated. While we had questions regarding size and placement of window prior to install, through Tony's suggestions, we are beyond happy with our new window! Highly recommended!

  • August 2024

    Just had 12 windows, a French door, sliding door, and Dutch door installed at our house. 3 full days of hard work! Antonio and Mark were on time every day at 7am as they said they would be. Antonio, Mark, Jake and Tony were amazing, kept everything clean as they went with very little clean up from me at the end. Things ran very smoothly and they were very professional. We had quotes from other companies and decided this was the best value for our money and we are so thrilled we went with them. Our house looks new with the addition of new windows and doors, it's amazing what an upgrade like this does! Thank you so much for a great experience and we have already recommended... read full review

  • Cornerstone Windows & Patio Doors

    3545 Lomita Blvd unit a, Torrance

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