LPD Engineering, PLLC Share: Civil EngineeringTransportation PlanningWater/Wastewater LPD Engineering, PLLC Visit Website 1932 First Avenue Ste 201 Seattle, WA 98101-1040 (206) 725-1211 (206) 973-5344 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.