Our Mission

Since 1964 its been our mission to provide quality professional engineering and surveying services tailored to our client’s need.

Our Services

Civil Enginering

PLSA maintains experienced professional engineers & engineering design technicians working together as a team to provide our clients with a wide range of engineering services.


PLSA has experienced field crews and in-house support staff. We provide our clients with the most cost effective, high quality and accurate survey services in the industry.

Land Planning

PLSA Planning department provides professional planning services such as land use analysis, project design, as well as subdivision and land development plan application assistance.

Quality Control

PLSA has provided quality control services for over 50 years. Our qualified testing staff has over 40 years of combined experience in projects big and small.

About PLSA

PLSA has a legacy of successfully delivering top quality performance, within budget and tailored to the individual needs of the client.  We are a diverse firm with expertise in civil engineering, geotechnical engineering, land surveying, land planning, environmental services, materials testing and construction quality control.  Our clients include governmental agencies, school districts, churches, utility districts and a great number of private sector developers throughout the State of Washington.  During the last 50 years, PLSA has completed thousands of projects for our clients.  PLSA has one primary office located in Yakima, Washington and is an Equal Opportunity Employer completely compliant with governmental regulations.

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