Cornerstone Granite USA was established in 2000
by business entrepreneur and family man, Billy Le.
Billy has helped to create elevated homes and commercial spaces for hundreds of families and clients.
With a warehouse based in Garden Grove, CA, Billy is open to serving
the Orange County area as well
as the Greater Los Angeles area.
Our Values
Collaboration
We thrive by recognizing one another's strengths. In order to create the bigger picture, we will continuously support one another in every aspect.
Customer commitment
As a family business, we always put others’ needs first— and in this case, the customers’ needs and desires will always be put first.
Innovation
We utilize cutting-edge technology that gives our company an edge in penetrating markets faster.
Passion
We are excited to be able to create your dream space — a space we know beautiful memories will be cultivated.
Craftsmanship
We are masters of the skills required by our duties. We honor, appreciate, and pay tribute to our personal and combined talents.
Safety
We always perform in a safe and professional manner, with an understanding that safety is a personal commitment to ourselves and to each other.
