About Us

Founded in 1986, SQ Consultants is a professional engineering consulting firm serving the Washington, D.C. and Mid-Atlantic markets. Our core services encompass geotechnical engineering design, structural design, testing and inspection, and construction management.

Our licensed professional engineers are engaged at every phase of a project — from inception through completion — ensuring continuity, accountability, and expedited coordination with state and federal regulatory agencies. We bring practical, real-world insight to each engagement, delivering sound recommendations that address project constraints without compromising quality or compliance.

At SQ Consultants, we are committed to exceptional client service. Our long-standing client relationships are a testament to that commitment.

With more than four decades of continuous service, SQ Consultants remains steadfast in its dedication to excellence, reliability, and the highest standards of professional engineering.