TW Construction

TW Construction

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The Therrien Waddell Construction team began its incubation in the 1970s.“I had been in the construction business for a few years, and here is this guy fresh out of college on the construction site,” said Donnie Waddell. Young Jerry Therrien proved to be a quick learner, and he and Donnie built a mutual respect for each other from the ground up, moving earth and building structures together, and u

05/20/2026

New project award!

We're stoked to be working with St. Mark Orthodox Church in Washington D.C. We'll be replacing and supplementing the existing mechanical systems throughout the entire facility, alongside some minor architectural improvements to round out the work.

Projects like this matter. Faith communities rely on their spaces every single day, and making sure those spaces work the way they should is work we take seriously.

Shoutout to our project partners:
Architect: Rutkove Building Consultants, LLC
MEP Engineers: Strickler and Associates

More updates to come as this one gets underway.

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Telephone

Address


9801 Washingtonian Boulevard , Suite 350
Gaithersburg, MD
20878

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm