Expert Tenant Broker "No Fee"
We represent you, not the landlord

Rent/Lease Apartment 25 E 21st St

Class B 10010 Buildings Flatiron District

Nearby Sublease office Spaces for Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Type of Space	Class A/month	Class B/month	Class C/month
Windowed office/person
Interior office/person
Team Rooms
Suites

Nearby office Spaces for Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Address	$ / SF	SF	Monthly Rent

Retail Spaces for Rent at 25 E 21st St

Retail Spaces
Sublease

Rent Retail 25 E 21st St

Nearby Tenants

Nearby Office Tenants Leased

Rumble Training leased 14,831 SF at 49 West 23rd St
New York Dermatology Gr… leased 14,182 SF at 119 Fifth Ave
Ackerman Institute for th… leased 14,000 SF at 936 Broadway
VidMob leased 13,700 SF at 126 Fifth Avenue
T. Rowe Price leased 13,450 SF at 233 Park Avenue South
Piano leased 13,092 SF at 85 Fifth Ave
Consolidated Carpet leased 13,000 SF at 16 West 22nd Street
Levy Alan Chiropractor leased 13,000 SF at 920 Broadway
Envogue International leased 12,652 SF at 230 Fifth Avenue
Endeavor Global leased 12,000 SF at 900 Broadway

Nearby Retail Tenants Leased

Pret A Manger leased 2,300 SF at 437 Fifth Avenue
The Thrifty HOG leased 2,126 SF at 11 West 25th St
Saint Petersburg Global Trade House leased 1,704 SF at 261 Fifth Ave
The Shade Store leased 1,610 SF at 254 Park Avenue South
House of Portfolios leased 1,600 SF at 37 West 26th Street
Sprint leased 1,600 SF at 39 West 14th St
Sandra Arnold leased 1,436 SF at 54 West 21st St
Dunkin Donuts leased 600 SF at 1235 Broadway
Desigual leased 0 SF at 362 Fifth Ave
Gap leased 35,000 SF at 120 Fifth Ave

$ / SF	SF	Monthly Rent
Please notify me when a new space is available

Tenant Broker’s Perspective: Return-to-office mandates are driving up rental prices at 25 East 21st Street. This trend is projected to continue. Opportunities for subleases remain available at 25 East 21st Street and in the nearby Flatiron District neighborhood.

Find My Space!

Thank you! we will be in touch.

Property Summary

25 East 21st Street Property Overview

Building Address:	25 E 21st St, New York NY 10010
Building Alternate Address:	25 E 21st St
Zip Code:	10010
Neighborhood:	Flatiron District
Borough:	Manhattan
Stories:	0
Year Built:	1904
Building Class:	B
Block & lot:	00850-7501

25 East 21st Street, Manhattan, NYC

Located in the Flatiron District, 25 East 21st Street is a historic building with a rich history. Originally constructed in 1904, it has undergone renovations, most notably in 1983.

This 11-story building is part of the vibrant Flatiron neighborhood, known for its iconic architecture and bustling atmosphere. The area is famous for the Flatiron Building, one of the city's oldest skyscrapers, and is surrounded by restaurants, shopping, and Madison Square Park.

The building itself offers a blend of old and new, with its original structure complemented by modern amenities. It stands as a testament to the area's evolution from industrial to residential and commercial use.

25 E 21st St, Manhattan, NYC

25 E 21st St, Manhattan, NYC offers the following building amenities:

24 Hour Access
Concierge
Laundry Facilities
Doorman
Package Service
Public Transportation
Recently Renovated Lobby
High Ceilings
Natural Light
Hardwood Floors
Exposed Ceiling
After Hours HVAC Available

25 E 21st St, Manhattan, NYC, is a boutique office building located in the Flatiron District. The building offers various office spaces, including a former recording studio on the 5th floor with 9 rooms, 2 private bathrooms, and a full kitchen. This space is soundproofed and features north, west, and south-facing windows, making it ideal for sound recording or content production studios.

Another notable space is on the 9th floor, featuring 7 perimeter offices, an open bullpen, and a stunning conference room. This shared space includes a pantry with a cooktop and benefits from lots of natural light and 11-foot ceilings.

The building provides 24/7 access, an attended lobby, and proximity to public transportation and Madison Square Park.

Internet Providers at 25 E 21st St, Manhattan, NYC

Several internet providers serve the area around 25 E 21st St in Manhattan. Here are some of the top options:

Verizon Fios: Known for high speeds up to 2 Gbps and reliable service. Verizon Fios covers a significant portion of Manhattan, including many areas around this location.
Astound Broadband Powered by RCN: Offers both cable and fiber services with speeds up to 1.5 Gbps. It provides coverage in most of Manhattan, though availability might vary in specific areas.
Spectrum: Provides cable internet with speeds up to 1 Gbps and is widely available across Manhattan.

25 E 21st St, Manhattan, NYC offers convenient transportation options:

Subway: The nearest subway station is 23 St (N, R lines), located approximately 0.2 miles away, a 2-minute walk.
Bus Stops: Nearby bus stops include E 23 St/Broadway and E 23 St/Madison Av.
Cross Streets: Broadway and 21st Street.
Airports: LaGuardia Airport is about a 20-minute drive, while Newark Liberty International Airport is approximately 23 minutes away by car.

Nearby Office Tenants Leased

Rumble Training leased 14,831 SF at 49 West 23rd St
New York Dermatology Gr… leased 14,182 SF at 119 Fifth Ave
Ackerman Institute for th… leased 14,000 SF at 936 Broadway
VidMob leased 13,700 SF at 126 Fifth Avenue
T. Rowe Price leased 13,450 SF at 233 Park Avenue South
Piano leased 13,092 SF at 85 Fifth Ave
Consolidated Carpet leased 13,000 SF at 16 West 22nd Street
Levy Alan Chiropractor leased 13,000 SF at 920 Broadway
Envogue International leased 12,652 SF at 230 Fifth Avenue
Endeavor Global leased 12,000 SF at 900 Broadway

Nearby Retail Tenants Leased

Pret A Manger leased 2,300 SF at 437 Fifth Avenue
The Thrifty HOG leased 2,126 SF at 11 West 25th St
Saint Petersburg Global Trade House leased 1,704 SF at 261 Fifth Ave
The Shade Store leased 1,610 SF at 254 Park Avenue South
House of Portfolios leased 1,600 SF at 37 West 26th Street
Sprint leased 1,600 SF at 39 West 14th St
Sandra Arnold leased 1,436 SF at 54 West 21st St
Dunkin Donuts leased 600 SF at 1235 Broadway
Desigual leased 0 SF at 362 Fifth Ave
Gap leased 35,000 SF at 120 Fifth Ave

Nearby Tenants

Nearby Office Tenants Leased

Rumble Training leased 14,831 SF at 49 West 23rd St
New York Dermatology Gr… leased 14,182 SF at 119 Fifth Ave
Ackerman Institute for th… leased 14,000 SF at 936 Broadway
VidMob leased 13,700 SF at 126 Fifth Avenue
T. Rowe Price leased 13,450 SF at 233 Park Avenue South
Piano leased 13,092 SF at 85 Fifth Ave
Consolidated Carpet leased 13,000 SF at 16 West 22nd Street
Levy Alan Chiropractor leased 13,000 SF at 920 Broadway
Envogue International leased 12,652 SF at 230 Fifth Avenue
Endeavor Global leased 12,000 SF at 900 Broadway

Nearby Retail Tenants Leased

Pret A Manger leased 2,300 SF at 437 Fifth Avenue
The Thrifty HOG leased 2,126 SF at 11 West 25th St
Saint Petersburg Global Trade House leased 1,704 SF at 261 Fifth Ave
The Shade Store leased 1,610 SF at 254 Park Avenue South
House of Portfolios leased 1,600 SF at 37 West 26th Street
Sprint leased 1,600 SF at 39 West 14th St
Sandra Arnold leased 1,436 SF at 54 West 21st St
Dunkin Donuts leased 600 SF at 1235 Broadway
Desigual leased 0 SF at 362 Fifth Ave
Gap leased 35,000 SF at 120 Fifth Ave

Isolar Enterprises, Inc. Testimonial

To Whom It May Concern: We were very fortunate to have Stephen Sunderland as our agent when we began to look for a new office space. Steve totally understood what we were looking for and found us our new home really quickly! He did not waste our time showing us endless properties that didn't meet with our criteria. We are extremely happy here in our new office and we all found Steve to be a pleasure to deal with. I would highly recommend him to anyone who is looking for a new space in New York City. Sincerely, Eileen d' Arcy

🤝 Tenant Representation: Optimal Spaces acts exclusively as a "Tenant Broker," only representing tenants, never landlords. ⚖️ Unbiased Service: Avoiding conflicts of interest, they provide impartial service, showing a wider range of properties and negotiating the best price. 🗂️ Comprehensive Process: Agents guide clients end-to-end, offering market surveys, floor plans, pricing expectations, and industry contacts. 🐷 Cost Savings: They negotiate rental price and identify/abate "hidden costs."
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? LANDLORD REP (Listing Agent) Fiduciary Duty: LANDLORD (Highest Rent, Best Terms for Landlord) FORLEASE TENANT REP (Tenant Broker) Fiduciary Duty: TENANT ONLY (Lowest Rent, Best Terms for Tenant) LEVELS THE PLAYING FIELD 2. It Almost Always Costs You Nothing 3. Access to “Hidden” Inventory 4. Negotiating Beyond Base Rent Landlord Pays Fee Free Expert Representation Public Websites (Limited/Dated) BROKER DATABASES & NETWORKS (Off-Market, Subleases, Future Availabilities) FREE RENT TI ALLOWANCE (Build-out Cash) OPEX CAPS (Limit Increases) LEASE FLEXIBILITY (Renewal/Expansion Options) 5. Time Savings & Process Management 6. Mitigating Risk (the “Gotchas”) Searching, Scheduling, RFPs Outsourced RE Dept. (Curated Options, Timeline Management) Restoration Clauses Holdover Penalties LEASE PROTECTION Spots Pitfalls in LOI & Lease 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.