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400 - 6,000 SF Flexible Office Space for Lease | 21-25 Flatbush Avenue

Market Price

21-25 Flatbush Avenue, Brooklyn, NY 11217

Active
Last Updated: 09/29/2026

45,000 sqft

Building Size

4.3159 acres

Lot Area

Details:
Building Size:    45,000 sqft
Lot Area:    4.3159 acres
Class:    B
Description:

21-25 Flatbush Avenue offers flexible office spaces ranging from approximately 400 - 6,000 SF in the heart of Downtown Brooklyn. Featuring high ceilings, customizable layouts, HVAC, white-boxed spaces, and flexible build-out options, the property can accommodate everything from boutique offices and startups to creative studios and full-floor users. Steps from Barclays Center, City Point, Fulton Street Mall, Atlantic Terminal, and numerous subway lines, the property provides exceptional access to transportation, dining, shopping, and neighborhood amenities.

Just steps from Barclays Center, City Point, and the Fulton Street Mall, 21-25 Flatbush sits at one of the busiest intersections in Brooklyn. This area is home to a growing mix of tech companies, creative agencies, law firms, retail brands, and media studios, making it a hotspot for ambitious professionals and entrepreneurs. Daily foot traffic is high, public transit is unbeatable, and the energy is 24/7 thanks to a rapidly growing residential
population and constant commercial buzz.

Nearest Transit: 2, 3, 4, & 5 at Nevins St; N, Q, R, B, & D trains at Atlantic Ave; and the B67, B45, B41, & B26 bus lines.

Nearby tenants include McDonald's, Junior’s Restaurant, Shake Shack, Sweet Chick, Starbucks, Dunkin’, Hungry Ghost, Devoción, Trader Joe’s, Whole Foods Market, Target, Primark, TD Bank, Chase Bank, CVS, Crunch Fitness, ALDI, Harbor Fitness, Blick Art Materials, Micro Center, Alamo Drafthouse, Gage & Tollner, DeKalb Market Hall, CKO Kickboxing Park Slope, Coffee Project New York, HI-BK Doggy Daycare, The Rockwell Place, 7-Eleven & more.

Map:
3 Spaces Available

21-25 Flatbush Avenue Unknown Sub Type

Available:
Immediately
Sublease:
No
SQFT
1,500

21-25 Flatbush Avenue Unknown Sub Type

Available:
Immediately
Sublease:
No
SQFT
3,000

21-25 Flatbush Avenue Medical

Available:
Immediately
Sublease:
No
SQFT
6,000
Lease Type:
Gross
Documents:
Title
25 Flatbush Avenue for Lease Brochure.pdf
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Location
Gallery