John Dettleff

John Dettleff

Executive Managing Director, Brokerage

Current responsibilities

John leads JLL's Metro, DC industrial team. He and his five-person team have leading occupier representation and agency leasing market share throughout the entire Washington, DC metropolitan area. John also coordinates with JLL’s Industrial Capital Markets Group, coordinating debt, equity and investment sale solutions for his clients.

Occupier clients include leading firms in the ecommerce retailers, logistics and construction/infrastructure arenas. Investor clients include, Blackstone, Nuveen, Peterson Cos, DWS, Elion and Fundrise.


  • 2006 – 2011: Vice President, Grubb & Ellis Company
  • 2001 – 2006: Associate Director, Advantis Real Estate Services Company
  • 2000 – 2001: Research Analyst, Advantis Real Estate Services Company
  • 1999 – 2000: Real Estate Analyst, CoStar Group

Recent client transactions

  • Iron Mountain, Washington Metropolitan area: over 1,000,000 s.f. new leases, lease restructuring and building acquisitions
  • JP Morgan/MRP Urban Industrial I-95 Industrial Portfolio, Springfield VA: 1,000,000 s.f. acquisition advisory and agency leasing
  • Kroger’s 717,000 SF acquisition and redevelopment of the former Toys “R” Us distribution center in Frederick, MD
  • 7-Eleven’s 500,000 built-to-suit in Fredericksburg, Virginia
  • Steuart Investments’ Featherstone Industrial Park, Woodbridge, VA: 750,000 s.f. investment sale and agency leasing
  • DCT’s Downs Park, Dulles VA: 25 acre land sale and 300,000 s.f. BTS for Amazon Web Services


  • MBA, Finance and Marketing, Marymount University, Arlington, Virginia (2003)
  • BA, Literature, Marymount University, Arlington, Virginia (1998)
  • BA, Philosophy, Marymount University, Arlington, Virginia (1998)
  • Member of the 2030 Group
  • Member of JLL’s Urban Logistics Council