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Who We Serve

EMJAY Engineering and Construction Co., Inc. is an established resource in Maryland, Delaware, D.C., Virginia, and southern Pennsylvania. Experts in institutional, commercial and industrial renovation, our highly skilled team can handle projects of all sizes and natures. We provide unmatched customer service and consistent, high-quality results for all clients. The clients we serve are both private and public, and most fall into three distinct categories:

  • Hospitals
  • Education Facilities
  • Institutional, commercial and industrial companies

When you choose EMJAY, you’re choosing quality! Join the countless clients who have trusted us for decades to keep their businesses thriving.


In the high-stress environment of a hospital, every minute matters. Each day presents new obstacles with highly impactful consequences. When the building experiences issues, such as HVAC equipment failure or plumbing leaks, crucial day-to-day tasks will be set back, and progress will be dwindled. It’s important that all systems are mended promptly and in an unobtrusive manner.

EMJAY assists hospitals with a variety of essential services, including new construction and renovation, as well as medical gas, plumbing, and HVAC services. Whether you need to fix a clogged plumbing system or replace dated HVAC equipment, we have the skills and expertise to solve all problems. We work seamlessly and won’t disrupt your work flow. Many members of our team have direct experience working in healthcare facilities, both occupied and unoccupied.

Some of our healthcare industry clients include:

  • Anne Arundel Medical Center
  • Baltimore Washington Medical Center
  • Carroll Hospital Center
  • Frederick Memorial Hospital
  • Greater Baltimore Medical Center
  • Holy Cross Hospital
  • Levindale Hebrew Geriatric Center & Hospital
  • Mercy Medical Center
  • Saint Agnes Hospital
  • Sheppard Pratt
  • Sinai Hospital
  • Spring Grove Hospital Center
  • St. Joseph Medical Center
  • University of Maryland Medical Center
  • VA Medical Center, Wilmington, Delaware
  • Union Memorial Hospital
  • Harford Memorial Hospital
  • Upper Chesapeake Medical Center

Educational Facilities

From grade schools to universities, all educational institutions play a vital role in shaping the minds of our future leaders. There’s no denying the value of a quality education. However, the physical building of the school is equal in importance to the course content yet is often neglected until problems arise. A healthy, functional facility is essential and creates a more productive learning environment. Similarly, some classrooms must be constructed in a specific arrangement to cater to particular subject matter.

EMJAY provides expert renovation and construction services for all educational institutions, including colleges and universities, as well as elementary through high school. For 65 years, we’ve maintained valuable relationships with a collection of higher education facilities, such as:

  • CCBC – All Campuses
  • Howard Community College
  • Johns Hopkins University
  • Morgan State University
  • Towson University
  • University of Maryland, Baltimore
  • University of Maryland, Baltimore County
  • University of Maryland, College Park

The school districts we support include Baltimore County, Carroll County, Cecil County, Frederick County, Harford County, Howard County, and Montgomery County. We provide routine plumbing maintenance, new construction projects, and HVAC system services for all classrooms, labs, lecture halls, and gymnasiums. Our team also has extensive experience in the construction of science, technology, engineering, and mathematics buildings (STEM), incorporating helpful features to give students an ideal learning environment.

Institutional, Commercial, and Industrial Companies

Our team is a known asset for numerous institutional, commercial and industrial companies. We specialize in the construction of boiler and chiller plants that support the building’s overall HVAC system. In these industries, many projects operate on complex and challenging schedules. EMJAY adapts by pre-fabricating and installing all equipment and piping. We keep all projects on a tight schedule to encourage productivity for our clients. Some of our most notable commercial and industrial clients include:

  • Automatic Rolls of Baltimore
  • Charles River Labs
  • Delaware Department of Corrections
  • Ft. Detrick
  • H & S Baking Company, Inc.
  • JHU Peabody Institute
  • Mid Atlantic Baking Company
  • National Aquarium in Baltimore
  • Oracle Arlington & Columbia
  • Saint-Gobain North America
  • Stella Maris
  • Under Armour

For more information about our service department or our team, please contact us today! We welcome all projects, big or small, and have a wealth of experience in the industry. Choose the leader that clients trust for all construction needs!