ABOUT US

​SDH has been providing Planning and Engineering services throughout Southern California since 2002. Past projects completed by SDH span from Bakersfield to San Diego and include a mix of: Residential, Institutional, Industrial, and Commercial developments. SDH has provided planning and engineering services as well as performed construction staking for thousands of residential lots, thousands of multi-family units, hundreds of thousands of square feet of commercial and industrial projects and more than a dozen Elementary, Intermediate, High School and College facilities all over Southern California.

SDH’s management team maintains involvement in every part of the planning and engineering process. We believe that this involvement, along with careful administration allows each project to proceed smoothly from planning through construction. 
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EXECUTIVE PROFILES
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Steve Sommers​

​Stephen Sommers is the founder of SDH & Associates, Inc. 

Dane Sommers

Dane Sommers is Principal and Office Engineer of SDH & Associates, Inc. Having grown up with a closeness to the industry, he possesses a working knowledge of the intricacies of the services SDH provides. 

Robert Van Zanten

​Robert Van Zanten is a Project Engineer at SDH & Associates. Robert contributes the benefit of over 3 decades of experience in construction management, NPDES coordination, and city engineering. Because of his many years of public engineering experience, Mr. Van Zanten brings a vast base of institutional knowledge that often assists in finding ways to overcome difficult site constraints.