Jack BartPartner

Headshot image for Jacob Bart



Jack Bart concentrates in real estate law, with an emphasis on commercial leasing. He has represented numerous landlords and tenants, in New York City and nationwide, with respect to office, retail and other lease and sublease transactions.

Jack has represented tenants in negotiating major headquarters leases. He secured leases in Manhattan covering more than 500,000 square feet for Saks & Co., and structured a long-term leasehold condominium for the Durst Organization and subsequent sale of hundreds of thousands of square feet of commercial condominium space.

In addition, Jack has worked on construction, project management, architect, consultant and brokerage agreements. He is known for working collaboratively across legal disciplines and with opposing counsel, in the interest of clients.

Jack was named one of America’s Leading Lawyers for Business in 2016 by Chambers USA and was ranked among the Best Lawyers in America in 2017. An advocate for the arts, Jack worked pro bono to negotiate the WNYC Radio lease for office space and a broadcast and performance studio.

Representative Matters

Representative significant transactions that Jack and his leasing group have handled include:

Tenants – Office
  • Saks & Co., in two leases of approximately 400,000 square feet in the aggregate, at 250 Vesey Street and 225 Liberty Street.
  • Chanel Inc., in its 185,000-square-foot headquarters lease at 9 W. 57th Street.
  • United Federation of Teachers, in its 400,000-square-foot headquarters lease at 52 Broadway, and subsequent leasing as landlord.
  • Health Insurance Plan of Greater New York (now EmblemHealth), in its 500,000-square-foot headquarters lease at 55 Water Street.
  • The Equitable Life Assurance Society of the U.S. (now AXA Equitable): (i) headquarters lease at 1290 Avenue of the Americas, for approximately 513,000 square feet, with an IDA tax incentive program, and a subsequent restructuring and extension of the headquarters lease; (ii) office lease in Syracuse, NY, for approximately 300,000 square feet; and (iii) office lease in Jersey City, NJ, for approximately 245,000 square feet.
  • Scholastic Inc., in its approximately 211,000-square-foot headquarters lease at 555 Broadway, with tax benefits through IDA financing, and a long-term ground lease of adjacent property, on which 557 Broadway was built and integrated with 555 Broadway; and subsequent leasing as landlord.
  • Ramius Capital Group, LLC (now Cowen Group, Inc.), in its approximately 75,000-square-foot lease at 599 Lexington Avenue.
  • Visiting Nurse Service of New York, in its acquisition of long-term leasehold condominium interests for more than 300,000 square feet of office and training space at 220 E. 42nd Street.
Tenants – Retail and Other than Office
  • Saks & Co., in its lease of a Saks Fifth Avenue store of approximately 85,000 square feet at 225 Liberty Street (Brookfield Place).
  • New York Mets, in its lease of a new stadium (Citi Field) from New York City.
  • Pace University, in its acquisition of long-term leasehold condominium interests encompassing 20 floors of student housing at 180 Broadway, and 31 floors of student housing at 33 Beekman Street.
  • WNYC Radio, in its lease of approximately 75,000 square feet of office and studio space at 10 Hudson Square.
  • The Menswear Industry Council, in the negotiation of a master form of lease used by a group of 32 menswear tenants who rented approximately 162,000 square feet of office/showroom space at 1350 Avenue of the Americas.
Landlords – Office
  • Silverstein Properties, in its lease to the Port Authority of approximately 600,000 square feet of office space in the to-be-built Tower 4 at the World Trade Center.
  • Mutual of America Life Insurance Company, in its leasing program of approximately 425,000 square feet of office and retail space at 320 Park Avenue, including leases to law firms, financial institutions and private equity funds.
  • The Durst Organization, in its structuring and sale of long-term leasehold condominium interests, and the leasing of office space at 205 E. 42nd Street, including transactions with CUNY and several not-for-profit charitable entities.
  • Minskoff Equities, in its leasing program of approximately 370,000 square feet of office, retail and educational space at 51 Astor Place, including leases to IBM (Watson), St. John’s University and other first-class tenancies.
  • Minskoff Equities, in its lease of a commercial condominium consisting of approximately 560,000 square feet of office space, to the Chase Manhattan Bank, at 1166 Avenue of the Americas.
  • TrizecHahn Office Properties, in its lease to (i) HBO of approximately 250,000 square feet of office space at the Grace Building, 1114 Avenue of the Americas; and (ii) Skadden Arps of the entire office space at 1460 Broadway (approximately 183,000 square feet).
  • State Teachers Retirement System of Ohio, in its leasing program of office space at 590 Madison Avenue, including office space leases to IBM and Citigroup Global Markets (Smith Barney).
  • Shearson Lehman Brothers, as sublandlord, in its subleasing program of approximately 575,000 square feet of office space at 1 Battery Park Plaza, in downtown Manhattan. Major completed transactions include subleases with prominent law firms, brokerage firms and banks.
Landlords – Retail
  • The owners/developers of a number of Manhattan co-op and condominium buildings, in their leasing of retail space to high profile retailers, restaurants and supermarkets, including Whole Foods, Bed Bath & Beyond, Bank of America, Walgreens and T-Mobile.
  • The owners of several first-class Manhattan office buildings, in their leasing of retail space to banks, prestigious retailers and restaurants, including a First Republic Bank branch, the new flagship location for Amalgamated Bank, and retailers such as Sephora, Benetton, Ann Taylor, Hugo Boss, Charles Tyrwhitt and AT&T.

Honors & Awards

Jack has been recognized by Chambers USA: America’s Leading Lawyers for Business, Best Lawyers and Super Lawyers for his work in real estate.


  • Member, New York State Bar Association
  • Member, Committee on Commercial Leasing
  • Member, Board of Advisors, Commercial Lease Law Insider

Admitted To Practice

New York; District of Columbia


J.D., Georgetown University Law Center, 1976; Editor, Georgetown University Law Journal

B.A., summa cum laude, Brooklyn College, 1973; Phi Beta Kappa