Search
Two-Unit Duplex with Rooftop Deck
For Sale
$3,390,000

371 84th St, Brooklyn, NY 11209

A four-story property combines a triplex residence with a garden duplex and a private rooftop area.

Property Size3,360 SF
Days on Market10

Property Features for 371 84th St

General Information

Standard status Active
Size 3,360 SF
Property subtype Multi Family

Additional Details

Public Transit Yes
Multifamily Units 2

Taxes and HOA fees

Annual Taxes $14,563

Amenities

rooftop deck
hot tub
Juliet balcony
chef's kitchen
fireplace
private balcony
radiant-heated flooring
smart home system
CCTV
central vacuum
in-unit laundry
central air conditioning

Building Details

Building Size 3,360 SF
Year Built 1920
Buildings 1
Stories 4
Construction concrete and brick
Listing Agency: Homemax Realty Inc
Listed By: Allen Z. Luo · License #10491214007
Source: Elliman
Added: Oct 2 Changed: Oct 5 Last Checked: Oct 9 at 10:45PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Homemax Realty Inc

Investment Insights

Based on property information with market context.

This two-family, four-story duplex at 371 84th St in Brooklyn includes a triplex and a garden duplex. The triplex has a rooftop deck, an oversized bedroom, a primary suite with a Juliet balcony and dressing room, and a separate bedroom. Its main living level features 9-foot ceilings, an open living and dining area, a fireplace, a kitchen with granite countertops, and a private balcony. The garden unit offers three bedrooms, 2.5 baths, a walk-in pantry, and a lower level with radiant heat.

Both residences have in-unit laundry and central A/C. Additional features include Anderson windows, hardwood floors, a whole-house sound system, network wiring, CCTV security, central vacuum, and generator readiness. The property is in Bay Ridge and has a Walk Score of 97, a Transit Score of 86, and a Bike Score of 82.

Key Highlights

  • Four‑story, two‑family property with a triplex and a garden duplex
  • Private rooftop deck with an 8‑person Sundance Aspen hot tub
  • Triplex includes a primary suite, dressing room, Juliet balcony, and separate bedroom

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$117,673
Cap Rate
3.47%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$2,353,460 $2.4M
Cap Rate 7%
$1,681,043 $1.7M
Cap Rate 9%
$1,307,478 $1.3M
Market Conditions
NOI Build-Up for 3,360 SF
Gross rent
$171.4K $51.00/SF
− Vacancy
−$3.3K −$0.97/SF
EGI
$168.1K $50.03/SF
− OpEx
−$50.4K −$15.01/SF
NOI
$117.7K $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%
$2,353,460
Cap Rate 7%
$1,681,043
Cap Rate 9%
$1,307,478

Alternative Uses

Best Use
Multifamily LT 5
$1.68M
$1.47M – $1.96M (±1% cap)
NOI $117,673 @ 7.0% cap · market cap 3.47%
Second Best
Apartment 5plus
$1.47M
$1.28M – $1.71M (±1% cap)
NOI $102,577 @ 7.0% cap · market cap 3.03%
Theoretical Best
Specialty Retail
$2.78M
$2.43M – $3.25M (±1% cap)
NOI $194,746 @ 7.0% cap · market cap 5.74%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Unlock full access to Insights Subscribe to Realmo Intelligence
Open Analytics

Current Use

Duplexes

Suggested Use

Top Pick Law Firm Real Estate Agency Parking Lot & Garage Hotel & Motel Cosmetic Store Nursing Home

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

4,776
Businesses Nearby

Demographics for 11209, NY

73,239
Population
33,286
Households
2.2
Avg Household Size
40
Median Age
53%
College-Educated
90%
High-School Grad
2.1 sq mi
ZIP Area
34,876
Density / Sq Mi
$92,656
Median Household Income
$62,455
Median Earnings
$1,857
Median Rent
$905,700
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
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

Frequently Asked Questions

What type of property is this?
Duplex - A four-story property combines a triplex residence with a garden duplex and a private rooftop area.
Where is this duplex located?
The property is located at 371 84th St Brooklyn, NY.
What is the asking price?
The asking price for this property is $3,390,000.
What are key features of this property?
This property features: Four‑story, two‑family property with a triplex and a garden duplex; Private rooftop deck with an 8‑person Sundance Aspen hot tub; Triplex includes a primary suite, dressing room, Juliet balcony, and separate bedroom
More about this property
Thanks! Your message was sent.
Error! Your message wasn't sent.
Please enter your name
Please enter email
Please enter the email in the correct format
Please enter phone
Please enter the number in the correct format
Please enter message
Why this one?
Saved
Reason not saved — we won't ask again