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Duplex with Finished Basement
New
For Sale
$780,000

4204 Avenue I, Brooklyn, NY 11210

Residential, Duplex, Brooklyn, NY

Property Size1,144 SF
Lot Size0.04 Acres
Price / SF$681.82
Days on Market2

Property Features for 4204 Avenue I

General Information

Property type Residential
Property subtype Duplex
Zoning R4
Bedrooms 3
Bathrooms 2
Full bathrooms 2
Rooms Bedroom 2, Bathroom 2, Bathroom 1, Bedroom 3, Bedroom 1
Parking features Carport
Interior features Central Air - Split, Laundry Area, Refrigerator, Stove, Window Treatments
Basement Finished, Full
Subdivision East Flatbush
Standard status Active
Size 1,144 SF
Lot size 0.04 Acres

Taxes and HOA fees

Tax Annual Amount 5835

Building Details

Year built 1920
Floors in Building 2
Flooring type Parquet Wood, Hardwood, Tile
Building materials Wood Frame
Architectural style Other
Buildings 1
Listing Agency: Pride Estates
Listed By: Alice Lee
Added: Nov 2 Changed: Nov 3 Last Checked: Nov 3 at 9:06PM
MLS# 505772

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.

Rey
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Investment Insights

Based on property information with market context.

Built in 1920, this 1,144-square-foot duplex has three bedrooms, two full bathrooms, and a finished basement with a recreation room, laundry area, and utility room. The main floor includes an entry foyer, living room, formal dining room, and eat-in kitchen. Additional features include split-unit air conditioning, gas heat, a private front carport, and a paved backyard. The 20-by-98-foot lot measures 0.0448 acres. Solar panels are leased, and the lease can transfer to the new owner; the roof was replaced in 2019 and the water heater in 2025.

The property is at 4204 Avenue I in Brooklyn, near Flatbush Junction, Target, Aldi, shopping, restaurants, the 2 and 5 subway lines, and several bus routes. Zoning is R4.

Key Highlights

  • 1,144‑square‑foot duplex on a 0.0448‑acre lot
  • 20‑by‑98‑foot lot
  • Three bedrooms and two full bathrooms, including a finished basement with recreation room

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$40,065
Cap Rate
5.14%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$801,300 $801.3K
Cap Rate 7%
$572,357 $572.4K
Cap Rate 9%
$445,167 $445.2K
Market Conditions
NOI Build-Up for 1,144 SF
Gross rent
$58.3K $51.00/SF
− Vacancy
−$1.1K −$0.97/SF
EGI
$57.2K $50.03/SF
− OpEx
−$17.2K −$15.01/SF
NOI
$40.1K $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%
$801,300
Cap Rate 7%
$572,357
Cap Rate 9%
$445,167

Alternative Uses

Best Use
Multifamily LT 5
$572.4K
$500.8K – $667.8K (±1% cap)
NOI $40,065 @ 7.0% cap · market cap 5.14%
Second Best
Apartment 5plus
$498.9K
$436.6K – $582.1K (±1% cap)
NOI $34,925 @ 7.0% cap · market cap 4.48%
Theoretical Best
Specialty Retail
$947.2K
$828.8K – $1.11M (±1% cap)
NOI $66,306 @ 7.0% cap · market cap 8.50%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

Who owns this building? See the owner, sales and loan history
Open Analytics

Lease Details

1
Residential units

Location Intelligence

Trade Area within ½ mile

2,404
Businesses Nearby

Demographics for 11210, NY

62,805
Population
22,817
Households
2.8
Avg Household Size
38
Median Age
39%
College-Educated
89%
High-School Grad
1.6 sq mi
ZIP Area
39,253
Density / Sq Mi
$83,261
Median Household Income
$50,286
Median Earnings
$1,734
Median Rent
$817,600
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 - A three-bedroom layout includes a finished lower level with recreation space, laundry, and a second full bathroom.
Where is this duplex located?
The property is located at 4204 Avenue I Brooklyn, NY.
What is the asking price?
The asking price for this property is $780,000.
What are key features of this property?
This property features: 1,144‑square‑foot duplex on a 0.0448‑acre lot; 20‑by‑98‑foot lot; Three bedrooms and two full bathrooms, including a finished basement with recreation room
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