Latest Projects

New Holland Transport

The client, New Holland Transport (NHT), wanted to redevelop the former Stanford Seed site located at the Denver interchange off the PA Turnpike. This site

Read More »

People We’ve Served

Diehm & Sons serves an extensive variety of client needs. Below are the types of clients we service with a sampling of project work examples. To determine if your land project would fit Diehm & Sons’ breadth of services, please click here to submit an inquiry.

Small Business Owner

  • Business expansion
  • New or expanded parking lots

The Plain Community

  • Business expansion
  • Subdivision for family and /or to sell for profit
  • Stormwater management for new agricultural structures


  • ALTA surveys
  • Expansion plans
  • New development
  • Site feasibility & due diligence

The Farmer

  • Subdivision for family and/or to sell for profit
  • Stormwater management for new agricultural structures
  • Business expansion

Agricultural Preservation Organization

  • Boundary and topographic surveys

Home Owners

  • Stormwater management plans for new accessory structures (garages, pools, etc.)
  • Boundary surveys and mark-my-lot
  • Subdivisions

School Districts, Colleges, & Universities

  • ALTA surveys

Land Developers – Residential & Commercial

  • Land development plans
  • Subdivision plans
  • Site feasibility studies
  • Stormwater management plans


  • Subdivision and/or lot add-on to create additional land area
  • Land development plans and/or stormwater management plans for additional building space including sanctuary, Sunday School, or office space

Subdivision for Estate Planning

Floodplain Determination & Development

  • Floodplain elevation certification/insurance
  • New structures in the floodplain