• Committed to:

    Performance Based Innovation and Creative Results to Exceed Customer Expectations - See Our Services

  • Committed to:

    Offering the highest customer care and expertise - See Contact Us

  • Committed to:

    Giving Back to Our Community and Creating Growth within the Field of Construction - See News and Events

We are Onyx Building Group

Featured Work

Every project is a new challenge to produce something unique.

News and Events

2018 Women's Build

May 5, 2018

Onyx was proud to be part of Habitat for Humanity's 2018 Women's Build. Giving back to the community is a priority for us at Onyx and we pride ourselves in being resourceful and well-integrated with others in the construction field.

Sycuan Casino and Resort Expansion

March 15, 2018

Onyx is happy to announce to be joining the team over at Sycuan Casino and Resort and will be installing an integrated plaster system for exterior conditions.

2017: Year in Review

January 1, 2018

2017 presented Onyx Building Group many successful opportunities to implement design solutions in high-end, custom projects throughout California.

Join the team

You want to work with a dedicated team — then we are perfect for you.

555 Raleigh Ave El Cajon, CA 92020 | P: (619) 324-1440 F: (619) 324-1441
Department of General Services Small Business Certification # 1547520 (exp 2/28/19)
California Public Utilities Commission Woman Owned Business Certification # 14040093 (exp 7/17/18)
© 2017 Copyright Onyx Building Group Lic #957645. All Rights Reserved