• Soil Testing NJ
  • Land Surveying NJ
  • Septic Design Hunterdon County NJ
  • Civil Engineering NJ


After many years of work, I have decided that whatever time I have left I will spend in leisure. For that reason, I will be retiring as of December 31, 2017. RBZ Enterprises, Inc. will cease to exist from that point on.

As I am required to keep all files that are 10 years old or less, I have rented a storage unit and original drawings and files are presently being placed in that unit for safe keeping. If anybody needs any of that information, please send me an e-mail at info@rbzenterprises.com and I will see that you get whatever you need.

If you need engineering services from this point on, I would suggest that you contact Jess Symonds of Biggs Engineering in Washington at (908) 963-6768. Surveys have been turned over to Patrick Fatton of Raritan, New Jersey and he should be contacted if you need any additional surveying services or if you need your originals. He can be reached at (908) 788-5790.

It has been a pleasure and honor serving you in the past and I wish you all success as you move ahead in the future.

Bob Zederbaum, P.E., P.P., CME

Our Services

Land Surveying

  • Our staff of licensed surveyors can provide all facets of surveying.
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Soil Testing and Septic Design

  • We have FAST and RELIABLE service to resolve your septic system problems.
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Civil Engineering

  • Residential and Commercial Engineering services for homeowners and developers.
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Site Development

  • RBZ can provide Professional services necessary for individual lot development and Subdivisions.
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Client Testimonials

  • Just wanted to thank you and your stellar crew for being a bright spot in an otherwise dismal situation! Looking forward to seeing you at the township meeting (May, I Hope!) All the Best—

    S. Fry
  • Thank you very much for expediting your work for mother’s septic system. Your helpfulness and professionalism is greatly appreciated.

    I. Dambro
  • We want to thank you for your help. We appreciate your time to explain everything to us. Your team and drawings are great. Everything went so smooth.

    K. Johnson