2-Unit Brick
509 E 91st Street, Brooklyn, NY 11236
For Sale
New
$1,199,000
Residential, Brooklyn, NY
Property Size2,360 SF
Lot Size0.06 Acres
Price / SF$508.05
Days on Market2
Property Features for 509 E 91st Street
General Information
Property type
Property subtype
Zoning
Bedrooms
Bathrooms
Full bathrooms
Rooms
Interior features
Basement
Subdivision
Standard status
Size
Lot size
Taxes and HOA fees
Tax Annual Amount
Amenities
garage
garden area
Building Details
Year built
Floors in Building
Number of units
Flooring type
Building materials
Roof type
Buildings
Listing Agency:
Excell Choice Realty
Listed By:
Kwesi Cunningham · License #10401263628
(718) 705-4646
Added: Nov 6
Last Checked: Nov 7 at 3:06PM
MLS# 505912
Copyright © 2026 Brooklyn New York Multiple Listing Service. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
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Investment Insights
Based on property information with market context.
This 2,360-square-foot brick duplex, built in 1920, contains two apartments: one with three bedrooms and one with two. Both include a living and dining area, kitchen, and full bathroom. A finished basement with its own entrance adds recreational space, a bathroom, utility room, closet storage, high ceilings, and large windows. The property also has a driveway, garage, and garden area.
The building measures 20.5 feet wide by 59 feet deep and sits on a 25-by-100-foot lot. Interior stairs connect the building’s levels. Hardwood flooring and a flat roof are among the recorded property features.
The building measures 20.5 feet wide by 59 feet deep and sits on a 25-by-100-foot lot. Interior stairs connect the building’s levels. Hardwood flooring and a flat roof are among the recorded property features.
Key Highlights
- Two apartments: one with 3 bedrooms and 1 bath, the other with 2 bedrooms and 1 bath
- Finished basement with separate entrance, bathroom, utility room, closet space, high ceiling, and large windows
- 2,360 square feet; built in 1920
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$82,651
Cap Rate
6.89%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,653,020
$1.7M
Cap Rate 7%
$1,180,729
$1.2M
Cap Rate 9%
$918,344
$918.3K
Market Conditions
NOI Build-Up for 2,360 SF
Gross rent
$120.4K $51.00/SF
− Vacancy
−$2.3K −$0.97/SF
EGI
$118.1K $50.03/SF
− OpEx
−$35.4K −$15.01/SF
NOI
$82.7K $35.02/SF
Area
Brooklyn, NY
Vacancy
1.90%
Lease Rate
$51.00 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,653,020
Cap Rate 7%
$1,180,729
Cap Rate 9%
$918,344
Alternative Uses
Best Use
Multifamily LT 5
$1.18M
$1.03M – $1.38M
NOI $82,651 @ 7.0% cap · market cap 6.89%
Second Best
Apartment 5plus
$1.03M
$900.6K – $1.20M
NOI $72,048 @ 7.0% cap · market cap 6.01%
Theoretical Best
Specialty Retail
$1.95M
$1.71M – $2.28M
NOI $136,786 @ 7.0% cap · market cap 11.41%
Zoning and permitted uses should be independently verified with authorities.
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Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
2,989
Businesses Nearby
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Business Placement
Demographics for 11236, NY
100,687
Population
37,002
Households
2.7
Avg Household Size
40
Median Age
28%
College-Educated
88%
High-School Grad
3.6 sq mi
ZIP Area
27,969
Density / Sq Mi
$82,813
Median Household Income
$50,244
Median Earnings
$1,637
Median Rent
$710,300
Median Home Value
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Market
Average Price Trend$/SF for Duplexes in Brooklyn, NY
Properties on Market for Duplexes in Brooklyn
Vacancy Rate% for Multifamily in Northeast region
Frequently Asked Questions
What type of property is this?
Duplex - Two apartments have separate bedroom and bath counts, with additional finished basement space.
Where is this duplex located?
The property is located at 509 E 91st Street Brooklyn, NY.
What is the asking price?
The asking price for this property is $1,199,000.
What are key features of this property?
This property features: Two apartments: one with 3 bedrooms and 1 bath, the other with 2 bedrooms and 1 bath; Finished basement with separate entrance, bathroom, utility room, closet space, high ceiling, and large windows; 2,360 square feet; built in 1920
