Integrity, experienced, responsive. Superb designs that are cost conscious.

Craig Sears
Taylor Development

LDC is a civil engineering, structural engineering, land surveying, and telecommunications A/E firm located in Woodinville, Washington.  As a turn-key engineering firm we provide creative and inclusive solutions to engineering and surveying needs for public and private clients throughout the Pacific Northwest.


  • Civil Engineering
  • Structural Engineering
  • Land Surveying
  • Telecommunications

Satisfied Clients:

  • City of Seattle Public Utilities
  • AT&T
  • Verizon
  • Clearwire
  • Bank of America
  • Safeway
  • DR Horton
  • Pope Resources

Service Area

We currently employ professionals licensed in Washington, Oregon, Idaho, California, Nevada, Alaska, and North Dakota.