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Donald E. Sonnenborn is co-chair of the Real Estate Practice Group of Davis & Gilbert. His practice includes the acquisition, disposition, financing, management and leasing of commercial properties. Mr. Sonnenborn handles extensive office and retail leasing on behalf of tenants and landlords.

Mr. Sonnenborn represents landlords which operate over 19 million square feet of commercial space in the New York City metropolitan area, including Rockefeller Center, the Chrysler Building and the Met Life Building. He also represents developers in forming joint ventures for the development and acquisition of real estate.

Mr. Sonnenborn was named to the 2015 BTI Client Service All-Stars list for
outstanding client service. He has also been recognized by The Legal 500 United States in the area of real estate (2014-2016). In addition, Mr. Sonnenborn has repeatedly been selected as a Super Lawyer by New York Metro Super Lawyers, including for 2013 and 2014.

REPRESENTATIVE ENGAGEMENTS

  • Represented landlord Tishman Speyer in the 500,000 square foot lease with MetLife, Inc. in the MetLife Building at 200 Park Avenue.
  • Represented landlord Tishman Speyer in the lease of approximately 190,000 square feet with Paul Hastings LLP in MetLife Building at 200 Park Avenue.
  • Represented landlord Tishman Speyer in the lease of approximately 143,860 square feet located at 1230 Sixth Ave. to First Republic Bank.
  • Represented landlord Tishman Speyer in the 458,000 square foot lease renewal, expansion and restructuring with Jefferies & Company at 520 Madison Avenue.
  • Represented Rockefeller Center in the 100,000 square foot lease renewal with Baker Botts at 30 Rockefeller Plaza.
  • Represented the owner of 375 Hudson Street in New York City, in the negotiation of a lease for 819,325 square feet of space.
  • Represented the owner of 300 Park Avenue in New York City, in the negotiation of a lease for 537,515 square feet of space.
  • Represented the owner of 666 Fifth Avenue in New York City, in connection with the conversion of that building into a condominium.

PRESS

Mentioned, New York Law Journal, "Marketplace," April 1, 2015

Mentioned, New York Law Journal, "Marketplace," by Monica Paquette, September 17, 2014

PROFESSIONAL MEMBERSHIPS/AFFILIATIONS

American Bar Association

BAR ADMISSIONS

New York

EDUCATION

Columbia Law School, J.D., James Kent Scholar
Columbia Business School, M.B.A.
Haverford College, B.A., Phi Beta Kappa


The Legal 500 - The Clients Guide to Law Firms

REPRESENTATIVE ENGAGEMENTS

  • Represented landlord Tishman Speyer in the 500,000 square foot lease with MetLife, Inc. in the MetLife Building at 200 Park Avenue.
  • Represented landlord Tishman Speyer in the lease of approximately 190,000 square feet with Paul Hastings LLP in MetLife Building at 200 Park Avenue.
  • Represented landlord Tishman Speyer in the lease of approximately 143,860 square feet located at 1230 Sixth Ave. to First Republic Bank.
  • Represented landlord Tishman Speyer in the 458,000 square foot lease renewal, expansion and restructuring with Jefferies & Company at 520 Madison Avenue.
  • Represented Rockefeller Center in the 100,000 square foot lease renewal with Baker Botts at 30 Rockefeller Plaza.
  • Represented the owner of 375 Hudson Street in New York City, in the negotiation of a lease for 819,325 square feet of space.
  • Represented the owner of 300 Park Avenue in New York City, in the negotiation of a lease for 537,515 square feet of space.
  • Represented the owner of 666 Fifth Avenue in New York City, in connection with the conversion of that building into a condominium.

PRESS

Mentioned, New York Law Journal, "Marketplace," April 1, 2015

Mentioned, New York Law Journal, "Marketplace," by Monica Paquette, September 17, 2014

PROFESSIONAL MEMBERSHIPS/AFFILIATIONS

American Bar Association

BAR ADMISSIONS

New York

EDUCATION

Columbia Law School, J.D., James Kent Scholar
Columbia Business School, M.B.A.
Haverford College, B.A., Phi Beta Kappa


The Legal 500 - The Clients Guide to Law Firms