Contact

Onyx Building Group

555 Raleigh Ave.
El Cajon, CA 92020
Office #: (619) 324-1440

Onyx has projects all over California, with a main office located in San Diego.

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 7/17/19)
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