About ICF
Leslie Zarker
Senior Manager, Multifamily Housing and Energy Efficiency
Leslie has spent more than 15 years working to improve the environmental factors that impact health and equity outcomes for low-income families.

Leslie (LEED Green Associate, Fitwel Ambassador) is a multifamily housing and energy efficiency expert with more than 15 years of experience working alongside governments, utilities, and stakeholders to scale energy efficiency, renewable energy, and affordable, healthy housing solutions. Leslie leads teams supporting HUD and DOE’s Better Buildings Challenge Multifamily Sector. In that role she provides more than 90 affordable multifamily housing organizations with technical support, helping them plan portfolio-wide energy efficiency strategies and benchmark the utility consumption of their multifamily properties. Leslie has developed training programs and technical tools to assist organizations with planning energy efficiency retrofits and new construction projects, as well as utility benchmarking, disaster resilience, carbon emissions reduction, and water conservation.

Leslie is an expert at bringing new initiatives in energy efficiency, workforce development, and healthy housing to scale, from the concept stage to full market adoption. She blends market analysis, program design implementation, and real-world marketing acumen together to yield a holistic approach to multifamily housing. As a member of the Building Performance Institute’s (BPI’s) executive team, she developed and launched a healthy home evaluator credential that expanded BPI’s certifications beyond best practice energy performance.

Her career spans the disciplines of policy research and advocacy, program management, and communications. With CMC Energy Services, she tracked and analyzed state regulatory statutes and legislation affecting energy policy in low-income energy efficiency programs. She researches and writes policy position papers, reports, briefings, and talking points to influence the legislative and regulatory processes.

With more than 10 years in the field, Leslie has expertise in the principles of building science, understanding how buildings’ key energy components interact to affect energy performance, indoor air quality and occupant health, comfort, and safety.
Leslie holds a master’s degree in public policy from the University of Maryland and a BA from St. Mary’s College of Maryland.

Education
  • B.A., St. Mary’s College of Maryland
  • M.P.P., University of Maryland
Publications
  • Co-author: Benchmarking Multifamily Affordable Housing: Preliminary Results from the Better Buildings Challenge, American Council for an Energy Efficient Economy, Summer Study Paper, 2020