
BASE4
Architecture and Engineering.
Explore capabilities, project experience, and office locations to build your shortlist.

Architecture and Engineering.
Precision Technology for Premium Renewables
Safety Engineering and System Safety Program Development.

Innovative Structural Engineering Solutions
Albany, NY

Systems Engineering and Information Technology.
Lexington Park, MD+1

Expert Witness & Forensics for the Civil Engineering Industry
You Can Build With Confidence.
Fortuna, CA+1
Providing Professional Service for Professional Clients
Saint Onge, SD

Your Complete ATS Solution
Land Planning and Feasibility Studies.

Construction Management and Constructability Reviews.
San Diego, CA

A New Partnership A New Beginning
Lansdale, PA+2

Design, Build, and Sustain a Better World
Springville, NY+4
People-First Transportation Engineering
Greenwood Village, CO

Where people and projects thrive together
Bellevue, WA

Designing creative and balanced transportation solutions
Denver, CO+2

Smart People Creating Smart Buildings
San Diego, CA

Committed to the integration of infrastructure, design, and the environment.
San Francisco, CA+7

Empowering Water, Powering Tomorrow
Mendham, NJ
Geotechnical Engineering and Geotechnical Site Investigation.
Tempe, AZ

Land Surveyors and Consulting Engineers
Mandan, ND

Structural engineering for buildings, bridges, and solar installations
San Diego, CA

Transportation Solutions in an Electronic World
Los Angeles, CA

Providing High Quality Results in a Cost Effective and Timely Manner
La Habra, CA+4