Thomas J. Ertle & Associates, LLC
Professional Engineering & Land Surveying
Our History


In 1960 in a small town called Spotswood, NJ, Joseph W. Ertle Sr. started a small Engineering and Surveying firm under his own name as a part-time business to help pay for expenses and college for his seven children. Working for the New Jersey Department of Transportation in various full time engineering positions gave him the security of a job and benefits but lacked in compensation needed to raise such a large family. As the good reputation of an honorable man grew, so did many appointments and positions. In but another part time capacity, Joe wrote the first building code, land use code and mapped out the master plan for the growing borough in which he lived. He played a prominent role in planning the borough’s sanitary sewer and water distribution systems. He was responsible in providing relief to some of the major floodways impacted by the boroughs and surrounding community’s growth. He served his town well as Tax Assessor, Zoning Officer, Planning Board Chairman, Zoning Board Chairman and Borough Engineer. He also served on several advisory committees and was influential in organizing and establishing the borough’s first recreation department and building various ball fields.
Through the years, the business grew with the help of his five sons and several grandchildren at different stages of their lives. Other professionals worked with Joe on a part time basis. As prosperous as the company looked, Joe could not leave the security of the State for the sake of his family. This small company transformed from Joseph W. Ertle, PE & LS to Spotswood Engineering Associates, a small but notable company. The company continued to thrive through the ‘70’s and into the ‘80’s.
In the mid 80’s, Joseph W. Ertle’s health began failing him and the business slowed. His youngest son played a very active role in the business and, where he could not physically do the work, his son hedged forward. Joseph W. Ertle Sr. died in 1991 leaving what was left of his business and 30+ years of records to his youngest son Thomas.
Thomas J. Ertle moved forward with the business in a full time capacity renaming it to Thomas J. Ertle & Associates and basing it in his home town of Jackson, NJ. Following his father’s example for over 19 years, THOMAS J. ERTLE & ASSOCIATES, LLC has been providing the community a degree of excellence unsurpassed. The business has grown through economic dearth maintaining a level of stability as a full service engineering, surveying and planning organization.
In 1993, Conrad Brenner joined the firm as an employee. Because the economy was not stable, his tenure was short and he went back to his former employer at the Ocean County Engineer’s Office. With the company’s background, it was acceptable that Mr. Brenner continued to work for THOMAS J. ERTLE & ASSOCIATES, LLC on a part time basis. In 1998, Mr. Brenner rejoined the firm full time as a partner where he remains as one of the principal owners and heads up our survey department.

THOMAS J. ERTLE & ASSOCIATES, LLC has had a reputation of being a family oriented business probably because of its grass roots as a family business. As with many family business’, it’s not always the bottom line that counts, it’s about producing a precise accurate product at all cost.

702 Brewers Bridge Road, Jackson, NJ 08527
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