Surveying & Mapping

Surveying since 1885

We focus our expertise on traditional surveying methods, as well as electronic measuring, photogrammetric mapping and other state-of-the-art methods.

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Civil Engineering

Extensive expertise

We service all aspects of civil engineering including stormwater management, erosion control plans, floodplain studies and highway occupancy permits.

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Land Planning

Turning your vision into reality

Whether it's subdivision plans, estate planning, sewage plans, or site feasibility analysis, we offer the guidance and experience that provides peace of mind.

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Diehm & Sons

View our Portfolio to see a sampling of our projects.

What People are Saying About Diehm & Sons

Whether it’s surveying and mapping, civil engineering or land planning, Diehm & Sons keeps pace with the changing times and deliveries. From executing intricate land surveys to communicating with various municipalities that require complex subdivision plans before a single stake is hammered into the ground, we are committed to the successful outcome of your specific project. Below is just a sample of what our clients have said about us.

My project with Diehm & Sons was both important and time sensitive. We came across the usual hiccups and obstacles but project manager Tom Matteson was able to handle them with ease. On the occasions when Tom was unavailable, his colleagues were quick to assist me. It was like having the whole team working on my project and, at one point, it seemed like they really were! In addition to the talent and timeliness they demonstrated, Diehm & Sons was just a pleasure to work with.
Penn Ketchum
Managing Partner, Penn Cinema

Diehm & Sons is a very capable firm and has the respect of the township. They are responsive to changing schedules, helpful, and friendly to work with. 

Diehm & Sons is very professional, prompt, friendly and knowledgeable about the services you did for us.

Diehm & Sons kept me in the loop on everything. They have a lot of experienced people in every area of their business. They are a professionally operated organization.

Diehm & Sons enjoys experienced staff who is tuned into local community issues and knows the community members.