About Speed & Associates CPAs

Grossberg, Butner and Speed, CPAs was formed in the year 2003 in Upland, CA – continuing the work of Bud Grossberg who had been in business for over fifteen years. GBS CPAs has been serving its surrounding communities well over 25 years. Since its inception the firm has lost two of its founders, hence now Speed and Associates, CPAs. The focus of the firm has not changed, and we continue to service our clients with a “hands on” approach.

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