The Spero Building at 19 West 21st Street, seen from the street below

Flatiron District · New York

19 West 21st Street

Loft office space in the landmark Spero Building, between Fifth and Sixth Avenue.

12
Stories
3,015
SF Available
24/7
Attended Access
403
Suite Available

The Building

Offices at
19 West 21st

New York, New York

KSR is pleased to present 19 West 21st Street. Set on a quiet Flatiron block between Fifth and Sixth Avenue, this twelve-story building offers loft office space with beautiful hardwood floors, private pantries, and high ceilings — steps from four 23rd Street subway stations and PATH.

The lobby has been recently renovated in marble and mosaic, with an attendant on duty. Over the years the building has housed a diverse range of tenants, including architects, PR firms, photographers, design studios, and non-profits.

With passenger and freight elevators, build-out services, and 24/7 access, these spaces are well suited to offices, showrooms, and other appointment-based businesses.

Hardwood Floors

Original plank floors run through the loft units above the retail base.

High Ceilings

Column-light floor plates with generous slab-to-slab heights.

Private Pantries

Wet pantries within the suites, plumbed and cabineted.

Passenger & Freight

Multiple passenger elevators plus dedicated freight service.

24/7 Access · Attended Lobby

Round-the-clock access to your space, through an attended lobby.

Build-Out Services

Ownership will modify layouts to suit — ask about turnkey options.

Availability

One Suite Available

Suite 403 is the building's only current vacancy — built out and ready to occupy, or reconfigured to suit.

Available Now

Suite 403

A full, built-out floor unit with an open bullpen along the window line, private offices, a conference room, and a wet pantry. Ownership is happy to modify the layout — or deliver it open.

  • Size3,015 SF
  • RentUpon Request
  • Term1–5 Years
  • ElectricDirect
  • ConditionBuilt
  • PossessionImmediate
Madison Square Park Flatiron Bldg W 26th W 25th W 24th W 23rd W 22nd W 21st W 20th W 19th 7th Ave 6th Ave 5th Ave Madison Park Ave S Broadway 1 F M R W 6 19 West 21st Street

Location

Flatiron, between
Fifth & Sixth Avenue

19 West 21st Street

New York, NY 10010

  • RW 23rd St · Broadway 3 min
  • FM 23rd St · 6th Ave 4 min
  • PATH 23rd St · 6th Ave 4 min
  • 6 23rd St · Park Ave S 6 min
  • 1 23rd St · 7th Ave 7 min
  • 456LNQRW 14th St · Union Square 10 min

Around the corner

  • The Flatiron Building
  • Madison Square Park
  • Eataly
  • Union Square Greenmarket
  • Ladurée
  • The High Line

Contact

Get in touch.

Showing Hours

Monday – Friday
9:00am – 5:00pm

Or email the leasing team directly.