This 6-family w/ 3 Market Rent and 3 Rent Stabilized apartments delivers strong, reliable cash flow with an 8.15% cap rate, offering a compelling return in today's market. This prime investment opportunity is located in the South Slope area of Park Slope! Monthly Rent Roll: $11,244 | Annual Rent Roll: $134,915 | Annual Expenses: $61,535 | NOI: $73,380 Lot: 20 x 100 ft | Building: 20 x 75 ft | 3 Stories + Basement | Zoning: C-2 | 6 Residential Units | Rent Stabilized. 1 apartment on the ground floor has become vacant and will remain so, incase a buyer wishes to be owner operated. Otherwise it can be immediately rented out upon closing. The property has deferred maintenance and is priced accordingly, representing a straightforward income play for an experienced investor or owner-operator comfortable with a building that requires attention. Income is consistent, making this a steady cash-flowing asset in one of Brooklyn's most sought-after and transit-accessible neighborhoods. All information deemed reliable but not guaranteed. Buyers to perform their own due diligence.

Property Details of 354 E 21st Street, South Slope

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Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of November 10, 2026 11:36 AM EST. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. IDX information is provided exclusively for consumers’ personal noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end user license agreement.

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