Built Environment Engineers

The built environment in harmony with the natural environment.




  • DC, MD, VA, NY, CO, FL


  • M. ARCH, Virginia Tech
  • BSME, University of Kentucky

Professional affiliations

  • Technical Advisory Group member for DC Mechanical Code Updates
  • Guest Critic, University of Maryland College of Architecture

Milton Iriarte, PE
Managing Principal

As a professional mechanical engineer, Milton Iriarte, PE, founder of Built Environment Engineers, brings design experience  ranging from  new construction to renovation and modernization projects. His projects span commercial, residential, educational, historic structures, laboratories, telecommunications, and governmental markets in the Washington Metropolitan area, as well as the Mid-Atlantic and Southeast regions of the US.

Milton’s expertise is  HVAC, plumbing, and sustainable design. His engineering expertise is a reflection of the projects he has been engaged in throughout his career. His knowledge includes codes and standards; HVAC calculations; energy modeling; refrigeration/boiler plants; chilled/hot water distribution; ventilation/air distribution; HVAC controls; and building automation systems.

Grounded in not only strong technical understanding of system design, Milton’s leadership style is more importantly  built upon a combination of project experience and education.  Complementing his engineering degree, Milton has a Masters in Architecture. This unique background offers practical architectural and engineering insights into a range of project requirements, including building renovations, infrastructure, evaluation and building studies, and IDIQ contracts.

Serving the design community, Milton serves as a leader in the TAG committee for DC mechanical code updates as well as serving as a guest critic for the Architecture School at the University of Maryland and as a judge for AIA green project awards

Representative previous experience as mechanical engineer-of-record  and executive-in-charge:

  • Observatory Hill Dormitory, UVA, Charlottesville
  • 8-1/2 Canal Street, off-campus student housing, VCU, Richmond, VA
  • 1150 Ripley Street, 432,000 sf residential apartment building, Silver Spring,  MD
  • Ashton at Judiciary Square, 11-floor luxury apartment high-rise, Washington, DC
  • Views at Clarendon, 8-floor new apartment building as  addition to existing church, Arlington, VA
  • 100 Eye Street, SE, 12-floor/258 unit apartment building, Washington, DC