"For complex refinancing he is a go-to because of his breadth of experience. He is very thoughtful and pragmatic."

"He's really great." "He's an outstanding lawyer."

Chambers USA


Frank Henneburg is a Real Estate partner in Mayer Brown's Washington DC office. He represents domestic and foreign institutional investors and lenders on a wide array of real estate matters. His experience includes the acquisition of all property types and the representation of both borrowers and lenders in single-property and portfolio loans. He has significant experience in buying and financing hotels, including the negotiation of hotel management agreements.

According to Chambers USA, "he doesn't miss a thing and never fails to deliver well thought-out work." Frank has also been labeled as "brilliant" and clients state that "…no matter what the deal is, Frank’s done it. He understands the business side of the deal." He is ranked in Chambers USA (DC: Real Estate) and is also listed in The Best Lawyers of America and several other lists of leading business lawyers.

Frank joined Mayer Brown in 2005 after working for several other major Washington DC law firms.

Spoken Languages

  • English


  • Represented a joint venture between domestic and foreign investors in the $1 billion acquisition of a public REIT owning 63 limited-service hotels.
  • Represented a private REIT in a joint venture with a major apartment developer to acquire and develop $1.4 billion of luxury high-rise apartments on a 20-acre site in Arlington, Virginia.
  • Represented a private REIT in the $214 million acquisition of a hotel and retail project in Washington DC.
  • Represented a private REIT in the $160 million acquisition of three luxury hotels in Washington DC and Chicago.
  • Represented an institutional lender in a $215 million revolving credit loan secured by 24 hotels in 10 states.
  • Represented a life insurance company in the $100 million acquisition of a 25% interest in 50 California vineyards.
  • Represented a life insurance company in a $100 million loan secured by 16 industrial warehouse facilities in 7 states.
  • Counseled several private equity funds and public retirement systems in the evaluation of hotel investments in major US cities.
  • Represented a private equity fund in a $275M loan secured by 17 medical office buildings.
  • Represented a private equity fund in a $290M loan secured by office property in Seattle.
  • Represented a private equity fund in a $250M loan to acquire single-family rental properties throughout the US.
  • Represents a private equity fund in 30 – 40 loans annually secured by commercial real estate throughout the US.


The University of Chicago Law School, JD

Georgetown University, AB, magna cum laude
Phi Beta Kappa


  • District of Columbia
  • Illinois
  • America’s Leading Lawyers for Business - District of Columbia, Chambers USA, 2020
  • Washington DC “Lawyer of the Year” in the Hospitality and Leisure category of Washingtonian’s Best Lawyers list, 2020
  • Best Lawyers in Washington DC,  The Wall Street Journal, 2019
  • Best Lawyers in America – District of Columbia, 2019