Brick Duplex With Private
For Sale
$1,799,000
3821 Avenue S, Brooklyn, NY 11234
Residential, Brooklyn, NY
Property Size4,880 SF
Lot Size0.09 Acres
Price / SF$368.65
Days on Market99
Property Features for 3821 Avenue S
General Information
Property type
Residential Multi Family
Property subtype
Other
Bedrooms
7
Bathrooms
6
Full bathrooms
4
Rooms
Bedroom 5, Bedroom 1, Bathroom 4, Bedroom 7, Bathroom 3, Bedroom 2, Bathroom 1, Bathroom 5, Bedroom 6, Bathroom 6, Bedroom 4, Bathroom 2, Bedroom 3
Patio and Porch features
Porch, Deck
Interior features
Central Air, Deck, Dishwasher, Dryer, Fireplace, Laundry Area, Microwave, Porch, Refrigerator, Stove, Washer
Fireplace
1
Basement
Finished
Subdivision
Marine Park
Standard status
Active
Size
4,880 SF
Lot size
0.09 Acres
Taxes and HOA fees
Tax Annual Amount
15411
Amenities
garage
private driveway
fireplaces
steam sauna
Jacuzzi tub
landscaped backyard
Building Details
Year built
1940
Floors in Building
4
Number of units
4
Flooring type
Tile, Hardwood
Building materials
Brick
Roof type
Slate
Listing Agency:
RE/MAX Edge · RE/MAX International
(718) 612-3088
Listed By:
Michelle J. Zhang · License #MZ4172
(646) 937-2188
Added: Jul 4
Changed: Sep 16
Last Checked: Oct 10 at 3:06AM
MLS# 502772
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.
Investment Insights
Based on property information with market context.
This detached duplex occupies a 4,880-square-foot residence built in 1940, with solid brick construction, hardwood and tile flooring, slate roofing, and a layout designed for two-family use. The home includes seven bedrooms and six bathrooms, multiple kitchens and living areas, formal dining spaces, fireplaces, central air, laundry, and a private entrance. Interior details include custom millwork, decorative moldings, hardwood staircases, stained-glass windows, and high ceilings. The upper-level suite adds a marble bathroom, Jacuzzi tub, separate shower, and steam sauna.
The property sits on a 0.0918-acre corner lot measuring 40 feet by 100 feet at 3821 Avenue S in Brooklyn, NY 11234. Exterior features include a private driveway, garage, brick perimeter wall, landscaped backyard, porch, and deck. Appliances include a dishwasher, dryer, microwave, refrigerator, stove, and washer.
The property sits on a 0.0918-acre corner lot measuring 40 feet by 100 feet at 3821 Avenue S in Brooklyn, NY 11234. Exterior features include a private driveway, garage, brick perimeter wall, landscaped backyard, porch, and deck. Appliances include a dishwasher, dryer, microwave, refrigerator, stove, and washer.
Key Highlights
- 4,880 square feet on a 0.0918‑acre corner lot
- Two‑family detached residence with 7 bedrooms and 6 bathrooms
- 40' * 100' corner lot with private driveway and garage
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$148,981
Cap Rate
8.28%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$2,979,620
$3.0M
Cap Rate 7%
$2,128,300
$2.1M
Cap Rate 9%
$1,655,344
$1.7M
Market Conditions
NOI Build-Up for 4,880 SF
Gross rent
$276.4K $56.64/SF
− Vacancy
−$5.5K −$1.13/SF
EGI
$270.9K $55.51/SF
− OpEx
−$121.9K −$24.98/SF
NOI
$149.0K $30.53/SF
Area
Brooklyn, NY
Vacancy
2.00%
Lease Rate
$56.64 /SF/Yr
Expense Ratio
45.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$2,979,620
Cap Rate 7%
$2,128,300
Cap Rate 9%
$1,655,344
Alternative Uses
Best Use
Multifamily LT 5
$2.44M
$2.14M – $2.85M
NOI $170,906 @ 7.0% cap · market cap 9.50%
Second Best
Apartment 5plus
$2.13M
$1.86M – $2.48M
NOI $148,981 @ 7.0% cap · market cap 8.28%
Theoretical Best
Specialty Retail
$4.04M
$3.54M – $4.71M
NOI $282,845 @ 7.0% cap · market cap 15.72%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
2,300
Businesses Nearby
Explore this area
Business Placement
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
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Market
Vacancy Rate% for Multifamily in Northeast region
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Frequently Asked Questions
What type of property is this?
Duplex - Detached two-family residence with multiple living areas, renovated kitchens, private outdoor space, and flexible multigenerational accommodations.
Where is this duplex located?
The property is located at 3821 Avenue S Brooklyn, NY.
What is the asking price?
The asking price for this property is $1,799,000.
What are key features of this property?
This property features: 4,880 square feet on a 0.0918‑acre corner lot; Two‑family detached residence with 7 bedrooms and 6 bathrooms; 40' * 100' corner lot with private driveway and garage
