WHO WE ARE WHAT WE DO OUR WORK SUBCONTRACTORS CAREERS CONTACT Performance. Integrity. Commitment. What we do We see things differently: We understand owner objectives and how to solve construction project challenges from concept to occupancy. Through this process, we build Partnerships for Life. ALL OUR CAPABILTIES Featured Projects Our projects say it all. The right relationships build remarkable projects, and our business is building exceptional construction partnerships with owners, architects, property managers, and subcontractors. Through our projects, we build Partnerships for Life. We have completed more than 600 projects, averaging approximately 60 per year, over sx million square feet of space, and more than $300 million in construction value. View All Projects Therrien Waddell was one of the early adopters educating and practicing sustainable construction in the Washington, DC-Baltimore metro region. Our experience shows that our early involvement in new construction projects contributes to more effective, creative and sustainable results, fulfilling our commitment to cleaner and better communities. Learn More News What’s new? On the move and making a difference! 05 APR Therrien Waddell, Inc. Owners Retir... New Company Ownership Learn More 27 APR TW Spells Out Job Site COVID-19 Gui... Safety is Non-Negotiable Learn More 30 MAR TW On the Move New Office Space Reflects New Beginnings Learn More 820 W. Diamond Ave., Suite 220 Gaithersburg, Maryland 20878 301.770.2275 twconstruction@therrienwaddell.com Contact Us Who We Are What We Do Our Work Subcontractors Careers Contact READ ALL NEWS Copyright 2021. All Rights Reserved. Privacy Policy EEO

WHO WE ARE WHAT WE DO OUR WORK SUBCONTRACTORS CAREERS CONTACT HomeWho We AreLeadership Team LEADERSHIP TEAM At Therrien Waddell, we build teams that create uncommon solutions for difficult problems. Coming together is a beginning. Keeping together is progress. Working together is success. ~ Henry Ford Jerry Therrien Principal Donnie Waddell Principal Dan Coffey Vice President Matt Maynard Vice President 820 W. Diamond Ave., Suite 220 Gaithersburg, Maryland 20878 301.770.2275 twconstruction@therrienwaddell.com Contact Us Who We Are What We Do Our Work Subcontractors Careers Contact READ ALL NEWS Copyright 2021. All Rights Reserved. Privacy Policy EEO