St. John Properties Selects Mark Mercer as Sustainability Engineer

Mark Mercer
Mark Mercer

BALTIMORE, MD (January 27, 2021) — St. John Properties, Inc., a Baltimore-based full-service commercial real estate development and investment company, has announced the hiring of Mark Mercer as Sustainability Engineer. He previously worked as a Project Engineer with Smith Mechanical.

Mercer will support the company’s Sustainability team to devise, implement and evaluate innovative sustainable business initiatives that positively impact the company’s portfolio and clients. This includes furthering the company’s mission of assuring that all newly-constructed buildings satisfy the U.S. Green Building Council’s thresholds of sustainability and earn Leadership in Energy and Environmental Design (LEED) certification. He will also analyze and evaluate existing mechanical systems to achieve optimum energy efficiency and track emerging legislation that impacts the commercial real estate industry as it relates to building sustainability standards.

Mercer earned a Bachelor of Science degree in Mechanical Engineering from the University of Maryland, Baltimore County and received his LEED Green Associate certification from the U.S. Green Building Council.

“This strategic hire brings depth to our sustainability team and adds a professional with highly-refined technical and mechanical skills,” explained Jeff Gish, Executive Vice President, Construction for St. John Properties. “St. John Properties remains extremely focused in continuing to be an industry leader in establishing best practices and providing the best possible indoor environments for our clients. Mark’s familiarity with HVAC systems adds a new level of expertise and we intend to leverage his knowledge to further improve energy efficiency across our portfolio.”

Founded in 1971, St. John Properties, Inc. is one of the Mid-Atlantic’s largest privately held commercial real estate firms. The company is distinguished by its commitment to customer service, achievements in green building, and top-rated workplace culture. Throughout St. John Properties’ 51-year history, the company has developed more than 22 million square feet of flex/R&D, office, retail and warehouse space serving more than 2,500 clients in Maryland, Colorado, Louisiana, Nevada, Pennsylvania, Virginia, Utah, and Wisconsin. For more information about the company, visit