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Rent/Lease Office 43 W 23rd St

$ / SF SF Monthly Rent
Negotiable

Nearby Sublease office Spaces for Rent

Address $ / SF SF Monthly Rent
W 14th St & Washington Street $ 92
7,900
$ 60,566
Address $ / SF SF Monthly Rent
Greene St & Between Canal Street $ 76
4,900
$ 31,033
Address $ / SF SF Monthly Rent
Broadway & East Houston Street $ 48
1,900
$ 7,520
Address $ / SF SF Monthly Rent
W 26th St & Twelfth Avenue $ 65
18,300
$ 99,125
W 23rd St & Avenue of America $ 26
9,000
$ 19,875
W 27th St & Between 6th Avenue $ 42
7,100
$ 24,850
W 27th St & Avenue of Americas $ 35
9,000
$ 26,250
W 25th St & Eighth Avenue $ 40
17,500
$ 58,333
Address $ / SF SF Monthly Rent
W 22nd St & Between 6th Avenue $ 39
4,300
$ 13,975
W 27th St & Between 6th Avenue $ 45
5,000
$ 18,750
W 27th St & Avenue of Americas $ 31
5,700
$ 14,725
W 26th St & Seventh Avenue $ 43
3,800
$ 13,616
W 27th St & Seventh Avenue $ 38
3,100
$ 9,816
W 27th St & Avenue of the Americas $ 33
5,500
$ 15,024
Seventh Ave & West 28th Street $ 57
3,400
$ 16,150
W 21st St & Avenue of the Americas $ 71
6,400
$ 37,866
Address $ / SF SF Monthly Rent
W 27th St & Avenue of Americas $ 52
2,000
$ 8,666
Seventh Ave & West 28th Street $ 43
2,300
$ 8,241
W 27th St & Seventh Avenue $ 36
1,700
$ 5,100
W 30th St & Seventh Avenue $ 32
1,600
$ 4,200
W 26th St & Seventh Avenue $ 45
1,900
$ 7,125
W 26th St & Avenue of America $ 80
2,000
$ 13,326
Address $ / SF SF Monthly Rent
W 23rd St & Avenue of America $ 39
7,800
$ 25,350
Address $ / SF SF Monthly Rent
Fifth Ave & Between West 13th Street $ 45
2,500
$ 9,375
W 26th St & Eleventh Avenue $ 33
4,000
$ 11,000
W 23rd St & Avenue of America $ 42
5,600
$ 19,366
W 25th St & Seventh Avenue $ 38
4,900
$ 15,720
W 27th St & Seventh Avenue $ 34
4,400
$ 12,650
W 19th St & Fifth Avenue $ 56
5,300
$ 24,733
Address $ / SF SF Monthly Rent
Seventh Ave & West 29th Street $ 40
1,600
$ 5,333
Fifth Ave & Between West 13th Street $ 45
2,000
$ 7,500
W 27th St & Seventh Avenue $ 35
1,800
$ 5,250
Tipo di spazio Classe A/mese Classe B/mese Classe C/mese
Ufficio con finestra/persona
Ufficio interno/persona
Sale per team
Suite

Nearby office Spaces for Rent

Address $ / SF SF Monthly Rent
Fifth Ave & West 21st Street $ 80
15,000
$ 100,625
Seventh Ave & West 29th Street $ 87
7,800
$ 56,550
Address $ / SF SF Monthly Rent
W 28th St & Between 7th Avenue $ 100
2,600
$ 21,666
Seventh Ave & West 29th Street $ 52
5,100
$ 21,887
Broadway & West 27th Street $ 76
5,000
$ 31,875
Address $ / SF SF Monthly Rent
Broadway & West 27th Street $ 65
2,200
$ 11,916
Seventh Ave & West 29th Street $ 54
2,400
$ 10,700
Address $ / SF SF Monthly Rent
Madison Square W & West 25th Street $ 47
12,500
$ 48,958
W 24th St & Between 6th Avenue $ 67
20,400
$ 113,900
W 11th Ave & Between 6th Avenue $ 60
10,400
$ 51,566
W 24th St & Avenue of the Americas $ 62
12,100
$ 62,516
Fifth Ave & West 18th Street $ 48
7,000
$ 28,291
W 28th St & Eighth Avenue $ 56
12,800
$ 59,733
W 25th St & Avenue of the Americas $ 70
10,300
$ 59,654
W 21st St & Avenue of the Americas $ 56
13,100
$ 61,679
W 27th St & Tenth Avenue $ 52
7,500
$ 32,187
W 25th St & Eleventh Avenue $ 52
9,000
$ 39,375
W 25th St & Seventh Avenue $ 37
8,000
$ 24,666
W 30th St & Seventh Avenue $ 34
7,700
$ 22,137
W 24th St & Avenue of America $ 54
7,300
$ 33,154
Address $ / SF SF Monthly Rent
W 30th St & Seventh Avenue $ 35
3,200
$ 9,333
W 24th St & Between 6th Avenue $ 52
4,000
$ 17,333
W 21st St & Fifth Avenue $ 58
5,300
$ 25,616
W 25th St & Avenue of the Americas $ 55
4,200
$ 19,250
W 27th St & Avenue of the Americas $ 39
5,000
$ 16,250
W 26th St & Avenue of America $ 38
4,600
$ 14,566
W 22nd St & Avenue of the Americas $ 62
5,500
$ 28,416
Seventh Ave & West 28th Street $ 49
5,600
$ 22,866
W 30th St & Eighth Avenue $ 36
5,200
$ 15,600
Eighth Ave & West 26th Street $ 47
4,500
$ 17,625
W 27th St & Avenue of America $ 42
2,500
$ 8,645
Fifth Ave & West 18th Street $ 52
2,600
$ 11,158
W 27th St & Seventh Avenue $ 40
2,800
$ 9,450
W 24th St & Avenue of America $ 70
2,600
$ 15,275
Fifth Ave & East 30th Street $ 60
3,500
$ 17,354
Address $ / SF SF Monthly Rent
W 27th St & Seventh Avenue $ 38
2,400
$ 7,700
W 29th St & Seventh Avenue $ 42
2,400
$ 8,400
Fifth Ave & East 30th Street $ 60
2,200
$ 10,908
Seventh Ave & West 30th Street $ 52
1,900
$ 8,312
W 29th St & Avenue of Americas $ 57
1,600
$ 7,600
W 30th St & Seventh Avenue $ 37
2,400
$ 7,400
Broadway & West 25th Street $ 58
2,000
$ 9,666
W 20th St & Avenue of the Americas $ 43
1,800
$ 6,450
W 21st St & Avenue of the Americas $ 66
1,600
$ 8,800
W 27th St & Tenth Avenue $ 56
1,700
$ 7,862
W 25th St & Eleventh Avenue $ 50
2,000
$ 8,401
W 27th St & Avenue of the Americas $ 42
2,400
$ 8,300
W 30th St & Eighth Avenue $ 47
1,700
$ 6,658
Address $ / SF SF Monthly Rent
W 22nd St & Fifth Avenue $ 55
11,900
$ 54,541
W 29th St & Seventh Avenue $ 38
7,000
$ 22,166
W 26th St & Avenue of the Americas $ 31
9,300
$ 24,025
W 26th St & Seventh Avenue $ 58
17,600
$ 85,800
W 19th St & Avenue of Americas $ 58
11,500
$ 55,583
W 27th St & Avenue of Americas $ 44
11,300
$ 41,433
W 20th St & Avenue of the Americas $ 57
11,100
$ 52,725
W 26th St & Between 7th Avenue $ 36
8,200
$ 24,600
W 27th St & Eighth Avenue $ 40
7,200
$ 24,000
W 29th St & Eight Avenue $ 40
8,600
$ 29,025
Address $ / SF SF Monthly Rent
W 29th St & Seventh Avenue $ 36
2,500
$ 7,500
W 29th St & Seventh Avenue $ 37
4,800
$ 14,800
W 26th St & Seventh Avenue $ 45
4,200
$ 15,750
W 19th St & 6th Avenue $ 45
4,500
$ 16,875
W 19th St & Avenue of the Americas $ 54
4,800
$ 21,600
W 30th St & Eighth Avenue $ 45
5,300
$ 19,875
W 28th St & Avenue of the Americas $ 45
5,000
$ 18,750
W 29th St & Avenue of the Americas $ 36
5,100
$ 15,300
W 29th St & Seventh Avenue $ 38
3,000
$ 9,500
W 22ND St & Between 5th Avenue $ 65
4,100
$ 22,208
Broadway & West 26th Street $ 65
4,000
$ 21,666
Address $ / SF SF Monthly Rent
W 25th St & Seventh Avenue $ 45
2,200
$ 8,250
W 25th St & Seventh Avenue $ 42
1,900
$ 6,729
W 21st St & Avenue of the Americas $ 36
2,100
$ 6,300
W 29th St & Avenue of the Americas $ 36
2,100
$ 6,300
W 22nd St & Fifth Avenue $ 48
2,100
$ 8,487
W 27th St & Eighth Avenue $ 42
1,900
$ 6,729
W 29th St & Eight Avenue $ 78
2,400
$ 15,700
Seventh Ave & West 29th Street $ 48
2,400
$ 9,600
W 21st St & Avenue of the Americas $ 45
1,900
$ 7,125
Seventh Ave & West 27th Street $ 48
1,600
$ 6,400

Retail Spaces for Rent at 43 W 23rd St

Rent Retail 43 W 23rd St

Rent Medical Space at 43 W 23rd St

Office Tenants Rented / Leased 43 West 23rd Street
  • Datorama leased 12,192 SF
  • Castro Properties leased 14,000 SF
  • Girl Scouts of Greater New York leased 26,000 SF
  • Market IQ leased 12,000 SF
  • VST Enterprises Ltd leased 13,157 SF
  • Ladies Mile Llc leased 500 SF
  • Member Workspace And P… leased 1,000 SF
  • Nexchange Group Inc leased 500 SF
  • Eataly leased 13,306 SF
Nearby Office Tenants Leased
  • Argo Group leased 48,000 SF at 413 West 14th Street
  • Union Health Center leased 45,310 SF at 275 Seventh Ave
  • Fred Alger Management Inc. leased 45,140 SF at 360 Park Ave South
  • Fashion Institute of Technology leased 45,130 SF at 236 West 27th St
  • WeWork leased 45,000 SF at 71 Fifth Avenue
  • Anthony Lawrence-Belfair Inc. leased 44,419 SF at 30 West 24th St
  • Nielsen Holdings leased 43,529 SF at 675 Avenue of the Americas
  • Knotel leased 43,000 SF at 156 Fifth Avenue
  • Vitech Corporation leased 42,200 SF at 401 Park Ave South
  • Red Bull leased 42,000 SF at 218 West 18th St
Nearby Retail Tenants Leased
  • Sleepy's leased 8,700 SF at 49 West 23rd St
  • Duane Reade leased 8,696 SF at 873 Broadway
  • Inked leased 8,500 SF at 150 West 22nd Street
  • Bozrock Restaurant leased 8,500 SF at 72 Madison Ave
  • Yoga Sutra NYC leased 8,000 SF at 6 East 39th St
  • Shaw Industries leased 7,963 SF at 853 Broadway
  • Soko Glam leased 7,772 SF at 1261 Broadway
  • LEGO Systems leased 7,703 SF at 200 Fifth Ave
  • Doral Bank leased 7,675 SF at 345 Park Ave South
  • Patagonia leased 7,521 SF at 414 West 14th St
$ / SF SF Monthly Rent
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Tenant Broker’s Perspective: Return-to-office mandates are driving up rental prices at 43 West 23rd Street. This trend is projected to continue. Opportunities for subleases remain available at 43 West 23rd Street and in the nearby Chelsea neighborhood.
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43 West 23rd Street nyc
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43 West 23rd Street Property Overview

Building Address: 43 W 23rd St, New York NY 10010
Building Name: The Castro Building
Building Alternate Address: 43 W 23rd St
Zip Code:10010
Neighborhood:Chelsea
Borough:Manhattan
Stories:8
Year Built:1903
Building Class:B
Block & lot:00825-0017

History of 43 West 23rd Street, Manhattan, NYC

43 West 23rd Street, located in the iconic Flatiron District of Manhattan, is a historic commercial building completed in 1903. The structure stands eight stories tall and was designed by the esteemed architect Henry J. Hardenbergh, known for his work on notable New York City landmarks such as The Dakota, the original Waldorf Astoria Hotel, and the Plaza Hotel.

Originally commissioned by the George C. Flint Furniture Company, a prominent 19th-century furniture maker, the building was purpose-built as a grand showroom extending through the block to West 24th Street. Hardenbergh’s design featured a limestone façade with large showroom windows that allowed abundant natural light, and rich architectural details including Ionic pillars, Corinthian pilasters, arches, and a deeply overhanging metal cornice. Ornate carved cartouches with demonic feline heads adorned the upper portion of the ground floor piers, marking the building’s distinctive style.

The Flint Furniture Company used the building to display a wide variety of fine furniture arranged in room settings, a retail strategy borrowed from its rival, R. J. Horner, whose cast iron store was nearby. The showroom featured styles such as Louis XV, Louis XVI, Chippendale mahogany, and German Renaissance oak, along with specialty bedroom suites in bird’s-eye maple, birch, mahogany, and oak.

Despite setbacks like a major factory fire in 1906 and subsequent business changes, the building at 43 West 23rd Street has remained largely unaltered and is a testament to the late 19th-century retail and architectural history of the Ladies' Mile shopping district. The building’s original Victorian staircase in the lobby and other preserved architectural elements highlight its continued historic character in the rapidly evolving Flatiron area.

Today, after a comprehensive renovation that preserved its character and architectural features, the building serves as a distinguished commercial property hosting world-class tenants, while standing as a significant piece of Manhattan's architectural and commercial heritage.


  • Location: Flatiron District (23rd St off 5th Ave)
  • Architect: Henry Hardenburgh (Dakota, Plaza Hotel)
  • Historic Victorian staircase in lobby
  • Dual entrances (23rd St & 24th St)
  • Bus line access
  • Subway proximity
  • 8-story boutique building
  • 12,000 SF typical floors
  • 12’ unfinished ceiling heights
  • Surface & covered parking available

43 W 23rd St, located in Manhattan, NYC, is a notable office building housing several prominent tenants. The current tenants include:

  • Spectrum
  • Barclays/Rise
  • Eataly Headquarters
  • Cognism
  • OnFrontiers
  • Revelio Labs
  • Secfi
  • Datorama

This building, also known as The Castro Building, is situated in the iconic Flatiron District. It offers a blend of historical architectural elements and modern amenities, making it a desirable location for businesses.


43 W 23rd St, Manhattan, NYC, is home to a Spectrum store, which offers a range of internet services. Spectrum provides fast internet with speeds starting at 100 Mbps and up to 300 Mbps, along with TV and phone bundles. Another major internet provider available in New York, NY, is AT&T U-verse, which offers reliable internet services, though it may not be specifically in this building. RCN is another provider in the area, offering high-speed internet up to 1000 Mbps on fiber-optic networks.


Location and Cross Streets

43 West 23rd Street is located in Manhattan, New York, with the nearest major cross streets including 5th Avenue and Broadway.

Subway Access

The nearby subway stations serving this location include:

  • 23rd Street Station (N, R lines) – approximately a 3-minute walk away
  • 28th Street Station (N, R lines) – approximately a 6-minute walk away

Other nearby subway lines accessible within short walking distance include the F, W, Q, and PATH trains, as well as subway stations along 6th Avenue and Lexington Avenue.

Bus Service

Multiple bus routes operate near 43 W 23rd St, including but not limited to:

  • M1, M2, M23-SBS
  • 158, 28, BM2, BM3
  • X27, X28, Downtown Local

Bus stops in close proximity include:

  • W 23rd St & 5th Ave
  • W 23rd St / 5th Ave
  • 5th Ave & W 23rd St
  • E 23rd St & Broadway

Train and Additional Transit

The area is also served by regional rail lines such as the Harlem Line and Port Jefferson Branch, as well as PATH trains connecting Manhattan to New Jersey.

Office Tenants Rented / Leased 43 West 23rd Street
  • Datorama leased 12,192 SF
  • Castro Properties leased 14,000 SF
  • Girl Scouts of Greater New York leased 26,000 SF
  • Market IQ leased 12,000 SF
  • VST Enterprises Ltd leased 13,157 SF
  • Ladies Mile Llc leased 500 SF
  • Member Workspace And P… leased 1,000 SF
  • Nexchange Group Inc leased 500 SF
  • Eataly leased 13,306 SF

Nearby Office Tenants Leased
  • Argo Group leased 48,000 SF at 413 West 14th Street
  • Union Health Center leased 45,310 SF at 275 Seventh Ave
  • Fred Alger Management Inc. leased 45,140 SF at 360 Park Ave South
  • Fashion Institute of Technology leased 45,130 SF at 236 West 27th St
  • WeWork leased 45,000 SF at 71 Fifth Avenue
  • Anthony Lawrence-Belfair Inc. leased 44,419 SF at 30 West 24th St
  • Nielsen Holdings leased 43,529 SF at 675 Avenue of the Americas
  • Knotel leased 43,000 SF at 156 Fifth Avenue
  • Vitech Corporation leased 42,200 SF at 401 Park Ave South
  • Red Bull leased 42,000 SF at 218 West 18th St

Nearby Retail Tenants Leased
  • Sleepy's leased 8,700 SF at 49 West 23rd St
  • Duane Reade leased 8,696 SF at 873 Broadway
  • Inked leased 8,500 SF at 150 West 22nd Street
  • Bozrock Restaurant leased 8,500 SF at 72 Madison Ave
  • Yoga Sutra NYC leased 8,000 SF at 6 East 39th St
  • Shaw Industries leased 7,963 SF at 853 Broadway
  • Soko Glam leased 7,772 SF at 1261 Broadway
  • LEGO Systems leased 7,703 SF at 200 Fifth Ave
  • Doral Bank leased 7,675 SF at 345 Park Ave South
  • Patagonia leased 7,521 SF at 414 West 14th St
Office Tenants Rented / Leased 43 West 23rd Street
  • Datorama leased 12,192 SF
  • Castro Properties leased 14,000 SF
  • Girl Scouts of Greater New York leased 26,000 SF
  • Market IQ leased 12,000 SF
  • VST Enterprises Ltd leased 13,157 SF
  • Ladies Mile Llc leased 500 SF
  • Member Workspace And P… leased 1,000 SF
  • Nexchange Group Inc leased 500 SF
  • Eataly leased 13,306 SF
Nearby Office Tenants Leased
  • Argo Group leased 48,000 SF at 413 West 14th Street
  • Union Health Center leased 45,310 SF at 275 Seventh Ave
  • Fred Alger Management Inc. leased 45,140 SF at 360 Park Ave South
  • Fashion Institute of Technology leased 45,130 SF at 236 West 27th St
  • WeWork leased 45,000 SF at 71 Fifth Avenue
  • Anthony Lawrence-Belfair Inc. leased 44,419 SF at 30 West 24th St
  • Nielsen Holdings leased 43,529 SF at 675 Avenue of the Americas
  • Knotel leased 43,000 SF at 156 Fifth Avenue
  • Vitech Corporation leased 42,200 SF at 401 Park Ave South
  • Red Bull leased 42,000 SF at 218 West 18th St
Nearby Retail Tenants Leased
  • Sleepy's leased 8,700 SF at 49 West 23rd St
  • Duane Reade leased 8,696 SF at 873 Broadway
  • Inked leased 8,500 SF at 150 West 22nd Street
  • Bozrock Restaurant leased 8,500 SF at 72 Madison Ave
  • Yoga Sutra NYC leased 8,000 SF at 6 East 39th St
  • Shaw Industries leased 7,963 SF at 853 Broadway
  • Soko Glam leased 7,772 SF at 1261 Broadway
  • LEGO Systems leased 7,703 SF at 200 Fifth Ave
  • Doral Bank leased 7,675 SF at 345 Park Ave South
  • Patagonia leased 7,521 SF at 414 West 14th St

RZO Advisory Group Testimonial

RZO Advisory Group testimonial To Whom It May Concern: Steve Sunderland acted as our real estate broker in relocation of this firm's 12,000 square feet of office space. While that may seem like a relatively easy task, given our requirements, it was anything but. After giving Mr. Sunderland a prospective location radius of onlny three blocks and a request for 75% of the offices to be windowed, he took us to numerous potential locations. Much to our surprise and delight, no visit was ever a waste of our time. Mr. Sunderland knew what he wanted and needed. He never showed us properties that would not work for the firm. After several weeks of searching, our situation caused us to put our search on hold. It was a couple of years before we resumed. I'm happy to say that Mr. Sunderland picked up with the same enthusiasm he had previously shown. Even after we had signed our new lease, Mr. Sunderland stayed in touch with us as well as our landlord to be sure that our work letter was adhered to. If you are looking for commercial space, I could not give Mr. Sunderland a higher recommendation. He was courteous and always professional throughout a long and sometimes difficult process. If you wish to contact me, please feel free to call at the number above. Sincerely, William Zysblat
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Comprehensive Process: Agents guide clients end-to-end, offering market surveys, floor plans, pricing expectations, and industry contacts.
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Why Optimal Spaces –
Tenant Broker

✓
  • No fee for clients renting space.
  • We work for YOU, not the landlord.
  • Save 15–20% on your business costs.
  • Save 100–200 hours of research.
  • Access to all available spaces.
  • Specialized real estate expertise.

Alone or with other broker

✕
  • Miss deals and hard-to-find spaces.
  • Potential conflict of interest (often represent landlords).
  • Only 10% of available spaces are online.
  • Lack of specialized expertise.
  • May not get the best terms or uncover hidden costs.
Why Use a Tenant Broker: Your Advocate in Commercial Real Estate
1. The Crucial Distinction: Whose Side Are They On?
2. It Almost Always Costs You Nothing
3. Access to “Hidden” Inventory
4. Negotiating Beyond Base Rent
5. Time Savings & Process Management
6. Mitigating Risk (the “Gotchas”)
Summary: Don’t rely on the landlord’s agent. A tenant broker is your advocate, provides better data, negotiates a complete package, and typically costs you nothing.
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