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Corner Duplex with Detached Garage
For Sale
$899,999

4102 Avenue S, Brooklyn, NY 11234

Residential, Duplex, Brooklyn, NY

Property Size966 SF
Lot Size0.04 Acres
Price / SF$931.68
Days on Market130

Property Features for 4102 Avenue S

General Information

Property type Residential
Property subtype Duplex
Zoning R4
Bedrooms 3
Bathrooms 2
Full bathrooms 2
Rooms Bathroom 2, Bedroom 2, Bathroom 1, Bedroom 1, Bedroom 3
Parking features Garage - Detached
Interior features Refrigerator, Stove
Basement Finished, Full
Subdivision Marine Park
Standard status Active
Size 966 SF
Lot size 0.04 Acres

Taxes and HOA fees

Tax Annual Amount 6648

Amenities

separate side entrance
private backyard

Building Details

Year built 1930
Floors in Building 2
Flooring type Hardwood, Carpet, Tile
Architectural style Other
Listing Agency: ProBase Real Estate
Listed By: JiaJie (Kai) Zheng
Added: Jun 16 Changed: Oct 21 Last Checked: Oct 23 at 10:06PM
MLS# 502271

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 1930-built duplex at 4102 Avenue S includes 966 square feet, three bedrooms, and two bathrooms within a functional residential layout. Tile, carpet, and hardwood flooring are complemented by a refrigerator and stove. A separate side entrance provides additional access, while the corner-lot position creates extra outdoor area and street exposure.

Exterior features include a private backyard and detached garage, offering outdoor space along with storage or parking capability. The property is in Brooklyn’s 11234 postal area, near schools, shopping, parks, and transportation. R4 zoning further identifies the property’s residential land-use classification.

Key Highlights

  • 966 square feet of property size
  • 0.0425‑acre corner lot
  • R4 zoning

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$33,831
Cap Rate
3.76%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$676,620 $676.6K
Cap Rate 7%
$483,300 $483.3K
Cap Rate 9%
$375,900 $375.9K
Market Conditions
NOI Build-Up for 966 SF
Gross rent
$49.3K $51.00/SF
− Vacancy
−$936 −$0.97/SF
EGI
$48.3K $50.03/SF
− OpEx
−$14.5K −$15.01/SF
NOI
$33.8K $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%
$676,620
Cap Rate 7%
$483,300
Cap Rate 9%
$375,900

Alternative Uses

Best Use
Multifamily LT 5
$483.3K
$422.9K – $563.9K (±1% cap)
NOI $33,831 @ 7.0% cap · market cap 3.76%
Second Best
Apartment 5plus
$421.3K
$368.6K – $491.5K (±1% cap)
NOI $29,491 @ 7.0% cap · market cap 3.28%
Theoretical Best
Specialty Retail
$799.8K
$699.9K – $933.2K (±1% cap)
NOI $55,989 @ 7.0% cap · market cap 6.22%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

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Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

2,111
Businesses Nearby

Demographics for 11234, NY

92,133
Population
35,167
Households
2.6
Avg Household Size
41
Median Age
39%
College-Educated
89%
High-School Grad
7.4 sq mi
ZIP Area
12,450
Density / Sq Mi
$94,434
Median Household Income
$55,206
Median Earnings
$1,771
Median Rent
$746,800
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025

Frequently Asked Questions

What type of property is this?
Duplex - R4-zoned duplex with a private backyard, separate side entrance, and detached garage.
Where is this duplex located?
The property is located at 4102 Avenue S Brooklyn, NY.
What is the asking price?
The asking price for this property is $899,999.
What are key features of this property?
This property features: 966 square feet of property size; 0.0425‑acre corner lot; R4 zoning
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