Mark Hallum

Mark Hallum covers leasing, sales and everything in between for Commercial Observer with a focus on New York City. In the past, he has covered transportation, politics and crime on the local level.

Mark Hallum @markuusan
Attendees enter the Javits Center for ICSC New York on Dec. 10.
Retail · Leases
National

Retailers Are Seizing on Splits Among Consumers: ICSC

By Mark Hallum
Cardinal Timothy Dolan and 455 Madison Avenue.
Hospitality · Investments & Sales
New York City

Catholic Church Sells 455 Madison Ground Lease to Pay Victims of Clergy Abuse

By Mark Hallum
Attendees gather at ICSC New York on Dec. 10.
Retail · Policy
New York City

Retailers and Brokers Have Learned to Look Past the Headlines: ICSC Attendees

By Mark Hallum
Angele Robinson-Gaylord (center) of Starbucks speaks on a panel at ICSC with Cassie Durand (left) of CBRE and Barrie Scardina (right) of Cushman & Wakefield on Dec. 10.
Retail · Leases
New York City

Retailers Persist Through Global Economic Challenges: ICSC Panel

By Mark Hallum
A photo of someone signing a lease with a placard that reads Top 10 Leases of 2025.
Office · Leases
New York City

New York City’s Top Office Leases of 2025

By Mark Hallum
A photo of an old-time cash register with a placard that reads Top 10 Sales of 2025.
Office · Investments & Sales
New York City

New York City’s Top Investment Sales of 2025

By Mark Hallum
Kathryn Garcia. Photo: Alexi Rosenfeld/Getty Images
Industry · Policy
New York City

Kathryn Garcia Likely to Succeed Rick Cotton as Port Authority Head

By Mark Hallum
Aaron Cukier.
Retail · Leases
New York City

Aaron Cukier Departs Extell to Handle Retail Leasing at CBRE

By Mark Hallum
New York City Economic Development Corporation's Andrew Kimball and the New York Public Library’s Bloomingdale branch at 150 West 100th Street.
Residential · Policy
New York City

New York’s EDC Seeks Proposals to Build Housing at 150 West 100th Street

By Mark Hallum
Frank Gehry poses for a photo in his office in Los Angeles, California on June 24, 2008.
Industry · Development
National

Renowned Architect Frank Gehry Dies at 96

By Mark Hallum
City Councilmember Chi Osse and a rendering of a proposed development at 1720 Atlantic Avenue, Brooklyn.
Residential · Policy
New York City

NYC Council Advances Plan for 300 Units at 1720 Atlantic Avenue in Brooklyn

By Mark Hallum
Steve Kaufman, owner of Kaufman Real Estate. 119 W 24th Street.
Office · Leases
New York City

Anheuser-Busch InBev Orders Another Round at 119 West 24th Street

By Mark Hallum
Aylin Gucalp (top) and Cassie Durand of CBRE. An interior of the "Social Spa" at 201 East 86th Street.
Retail · Leases
New York City

Bathhouse and Wellness Brand Othership Signs 14K-SF Lease in Upper East Side

By Mark Hallum
Empire State Realty Trust's Tony Malkin and 557 Broadway.
Office · Investments & Sales
New York City

ESRT Acquires 555-557 Broadway From Scholastic for $386M

By Mark Hallum
Renderings of Bally's Bronx (left), Hard Rock Hotel & Casino Metropolitan Park (top right), and Resorts World New York City (bottom right).
Hospitality · Policy
New York City

New York City Set to Get Three New Casinos

By Mark Hallum
Newmark's Michael Paster and 792 Madison Avenue.
Retail · Leases
New York City

Jacob Cohen to Open Its First U.S. Location in the Upper East Side

By Mark Hallum
An illustration of a person behind a podium with a question mark over their face and a New York City Department of Transportation logo behind them.
Industry · Policy
New York City

Zohran Mamdani’s Transportation Plans: How Likely Are They to Arrive on Time?

By Mark Hallum