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
Residential · Investments & Sales
New York City

Atlas Capital Buys 250 East Houston Street for $112M

By Mark Hallum
Scott Rechler.
Residential · Investments & Sales
New York City

RXR Acquires Stake in Upper East Side Housing Portfolio, Assumes $150M in Debt

By Mark Hallum
CBRE's Brad Gerla and 540 Fulton Street, Brooklyn.
Office · Leases
New York City

Arizona College of Nursing Signs 40K-SF Lease at 532 Fulton Street in Brooklyn

By Mark Hallum
Brandon Singer, CEO of Retail by MONA, and 477 Madison Avenue.
Office · Leases
New York City

Retail by MONA Almost Doubles Office Footprint at RFR’s 477 Madison Avenue

By Mark Hallum
Empire State Realty Trust's Thomas Durels and 111 West 33rd Street.
Office · Leases
New York City

Data Firm Penta Group Signs 11K-SF Lease at 111 West 33rd Street

By Mark Hallum
Gov. Kathy Hochul delivers 2026 State of the State Address.
Industry · Policy
New York City

Hochul Pitches Crosstown Q Train Extension in Harlem in State of the State

By Mark Hallum
One hundred dollar bill is sliced into pieces with scissors.
Industry · Capital Markets
New York City

Where REITs Stand in 2026

By Mark Hallum
Tishman Speyer's Rob Speyer and 148 Lafayette Street.
Office · Leases
New York City

AI Firm Graphite Signs 24K-SF Deal With Tishman Speyer at 148 Lafayette Street

By Mark Hallum
CBRE's Aylin Gucalp (top) and Cassie Durand (bottom), and 225 Fifth Avenue.
Retail · Leases
New York City

Fitness App Hero’s Journey Signs 18K-SF Lease at 225 Fifth Avenue

By Mark Hallum
Joseph Caridi.
Office · Players
New York City

JLL Hires Cushman & Wakefield’s Joseph Caridi to Lead Tri-State Leasing Efforts

By Mark Hallum
Verada Retail's Nathaniel Mallon (top) and David Dubinsky (bottom), and 168 Montague Street, Brooklyn.
Special Purpose · Leases
New York City

Blooming Prep Signs 11K-SF Sublease at 168 Montague Street in Brooklyn Heights

By Mark Hallum
Irvine Co. Chairman Donald Bren and the MetLife Building at 200 Park Avenue.
Office · Leases
New York City

Law Firm Gibson Dunn Renews 362K SF in MetLife Building

By Mark Hallum
Dan Garodnick.
Industry · Policy
New York City

Dan Garodnick Resigns as Head of City Planning After Four Years

By Mark Hallum
Ben Levy and Jeff Buslik of Adams & Company. 16 Madison Square West.
Office · Leases
New York City

Public Relations Firm Purple Signs 24K-SF Lease at 16 Madison Square West

By Mark Hallum
New York City Councilmember Julie Menin.
Industry · Policy
New York City

New York City Council Unanimously Elects Julie Menin as Speaker

By Mark Hallum
Scott Jennings of PSEG Long Island and a bank of National Grid electric meters.
Industrial · Investments & Sales
New York City

National Grid Sells Vacant Far Rockaway Site to PSEG

By Mark Hallum
Savills' Scott Bogetti (top), JLL's David Kleiner (bottom) and 320 Park Avenue.
Office · Leases
New York City

AI-Backed Digital Solutions Firm EXL Expands to 30K SF at 320 Park Avenue

By Mark Hallum