Built on trust. Proven for mission-critical work.
Long-term partnerships built on trust, transparency, and results.
Award-winning safety practices that protect every person on every job.
More than a century of mission-critical mechanical construction across the DMV.
Design assist, BIM coordination, and planning that reduce risk before ground breaks.

Photo credit: https://stvinc.com
Project Overview
Heffron was selected to a design assist role on the USDA Building 307 Project. The USDA Building 307 project was a gut and retrofit of the existing 5 story building.
Heffron installed new chillers, AHU’s, steam to hot water heat exchangers, pumps, RODI system, vacuum system, and multiple DX systems.
Heffron was able to help maintain the budget given at the 35% design phase and give back savings based on design assist efforts. The project was successfully completed in 2022 and is in full operation.
Scope of Work
01
02
03
04
05
Project Details
U.S. Department of Agriculture
Government
Design assist
Full gut and retrofit of a 5-story building
2022 — in full operation
Have a similar project?
Heffron self-performs mechanical construction across the DMV — Washington D.C., Maryland, and Virginia — including inside active, validated production facilities.