Bay Area acoustical consulting firm expands Coffman’s capabilities

Engineers pose for photo to announce joining firms
RGD Acoustics and Coffman Engineers leadership. From L to R Timothy Der, Harold Goldberg, Scott Twele, Brian Salyers, Alan Rosen.

OAKLAND, California, July 10, 2023 – Coffman Engineers announced today they have finalized an asset purchase agreement with acoustical consulting firm RGD Acoustics, Inc. (RGD). Coffman welcomes RGD’s three owners and two staff members to the company. Representatives from both firms finalized the agreement in a signing ceremony on July 7th.

The decision to join Coffman allows both firms to expand their resources and acoustical service offerings while providing continuity for RGD’s clients and employees.

RGD owners Alan Rosen, Harold Goldberg, PE, and Timothy Der will join Coffman as principal advisors. The addition of RGD expands Coffman’s Bay Area acoustical group from two to six employees. RGD offers specialized acoustical consulting and design services, completing hundreds of projects in the Bay Area and throughout California.

“Tim, Harold, and I have enjoyed the success of our partnership for the past 20 years and it was time to look at what was next for us. Over the past four years, we’ve gotten to know the staff and leadership of Coffman and were encouraged to see our values and goals for business align. We are excited to continue serving our clients with more resources and capabilities,” said Alan Rosen, RGD Principal.

Expanded Acoustics Capabilities

RGD and Coffman have an ongoing working partnership that provides a foundation for a smooth transition of projects, clients, and employees. With overlapping clients and market sectors in healthcare, education, and housing, Coffman looks forward to RGD expanding their capabilities in areas such as performing arts centers and specialized spaces where quality room acoustics are essential for proper function.

“Alan, Harold, and Tim are respected individuals in the industry and have built a successful firm. We are honored that they chose Coffman for their next chapter. As we expand acoustical services at Coffman, adding RGD is an advantage for our clients. We look forward to learning from RGD and growing together,” said Brian Salyers, PE, Bay Area General Manager.

RGD, as Coffman Engineers, will continue to support clients and honor their project commitments with the same staff and quality. They will maintain operations from their San Rafael office while integrating into Coffman’s Oakland office.

Deal Highlights

  • February 28, 2023 – Letter of Intent (LOI) Signed.
  • June 6, 2023 – LOI Announcement.
  • July 7, 2023 – Deal Closed.
  • July 10, 2023 – RGD employees become Coffman employees.

Join us in welcoming RGD Acoustics. We look forward to a bright future together. For more information, view the accompanying Press Release and Fact Sheet.


About RGD Acoustics, Inc.

RGD Acoustics was established in 2003. The team at RGD Acoustics has experience in theoretical and practical aspects of acoustical design. Services include evaluating projects and recommending design solutions to address a number of key issues including exterior noise transmission, room to room noise insulation, interior room acoustics, and mechanical equipment noise and vibration. RGD has completed hundreds of projects involving hospitals, schools, residential housing, civic buildings, and laboratories where quality acoustics are essential.