Joseph M. Estock, Consulting Engineers & Land Surveyors is a third-generation civil engineering and land surveying practice. 

The business was founded circa 1950 by the late Donald H. Schurr Sr. of Norristown, Pennsylvania. Mr. Schurr founded the firm following his service in World War II as a captain and pilot in the United States Marine Corps, during which he led over one hundred dive bomber missions. After his time in the service, he returned to Drexel University, where he earned his degree in Civil Engineering. 

In 1954, after serving in active military duty during the Korean War, Joseph J. Estock began working for Mr. Schurr as a transit person.

During this period, Joseph J. Estock surveyed many of the postwar land subdivisions in the Norristown area. He also conducted surveys for the construction of the Schuylkill Expressway.

In 1973, Mr. Schurr left to work for Yerkes Associates, Inc. and sold the practice to Joseph J. Estock. Mr. Schurr transferred ownership of the business, clients, survey equipment, survey truck, and all supplies for $1,500. That was a bargain!

From 1973 to 1992, Joseph J. Estock, along with his faithful employee, the late Castro “Sharky” Carangi continued the practice and upheld the strong reputation for quality work that Mr. Schurr began. In 1977, Joseph M. Estock began working with his father in the land surveying practice during his high school and college summer vacations.

In 1992, following his father’s retirement, Joseph M. Estock established the current firm, continuing a legacy of precision, integrity, and service in civil engineering and land surveying.