Customer Reviews
Hear from Our Satisfied Clients
Hear from Our Satisfied Clients
At Cornerstone Windows & Patio Doors, we combine the best window and door products with superior service.
With more than 3 decades of construction expertise, we’ve developed an installation system that eliminates damage to stucco and drywall. Our expert, in-house installers go to great lengths to protect your floors and furniture as they work. Most projects are completed in a single day.
Customers often compliment our installers. We thrive on these wonderful business relationships while serving residents throughout the South Bay and West Los Angeles areas.
Google Reviews
“My wife and I were so impressed with the service and friendly staff that gave us exactly what we asked for. Their helpful professional input and easy demeanor gave us confidence that the job will be done right. The work was done within budget and schedule. We couldn’t be happier! Thank you Cornerstone!”
We’re happy to report that due to a large backload of installations, we’re unable to contract any new business until early April 2024. We will start returning emails and phone calls on April 22nd.
If you’re a current customer with an installation date, please leave a short message and someone will return your call promptly.