Shaped by exceptional experiences and trusted relationships built over four generations of family ownership.
MCAA/CNA Safety Excellence Award winner with an EMR of 0.57 — fostering workplaces where every person goes home safe.
103+ years of delivering mission-critical mechanical systems for the institutions that matter most.
Client Portfolio
Heffron has delivered mechanical construction across one of Maryland’s most significant life-sciences campuses in Rockville — from the original 650,000-square-foot research headquarters built for Human Genome Sciences to follow-on work supporting the site’s later use as a global vaccines R&D center under GSK.
The campus has since passed through three major biopharma owners, a testament to the lasting quality of the facilities Heffron helped build.
Featured Projects
Rockville, MD
Rockville, MD · Capital Research Campus
Rockville, MD · 9800 Medical Center Drive
Rockville, MD • Completed Nov 2003 · MEP Engineer: RMF Engineering
Rockville, MD · Capital Research Campus • 14200 Shady Grove Road — GSK Vaccines R&D Era
Following GSK’s 2012 acquisition of the Rockville Capital Research Campus, Heffron performed mechanical construction on select campus buildings and laboratories supporting the site’s use as a global vaccines R&D center.
The work continued a relationship that began with the original headquarters build — the same crews returning to the same campus, now under a new owner and a new research mission. Maintaining mechanical reliability across an active biopharmaceutical environment, where uptime and validated performance carry direct programmatic weight, defined every phase of the scope.
Rockville, MD · 9800 Medical Center Drive • Dec 2001 – Apr 2002 · MEP Engineer: Vanderweil Engineering
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