Residential Income Duplex with
3627 Flatlands Avenue Brooklyn, NY 11234
3627 Flatlands Avenue, Brooklyn, NY, 11234
$1,290,000
For Sale
$1,290,000
SINGLE_FAMILY - Brooklyn, NY
Property Size1,408 SF
Lot Size0.03 Acres
Price / SF$916.19
Days on Market31
Property Features for 3627 Flatlands Avenue
General Information
- Property type
- Residential
- Property subtype
- Duplex
- Zoning
- R4
- Bedrooms
- 3
- Bathrooms
- 4
- Rooms
- Bedroom 3, Bathroom 4, Bedroom 1, Bathroom 3, Bathroom 1, Bedroom 2, Bathroom 2
- Patio and Porch features
- Patio
- Interior features
- Central Air, Dishwasher, Dryer, Patio Garden, Refrigerator, Stove, Washer
- Basement
- Finished
- Standard status
- Active
- Size
- 1,408 SF
- Lot size
- 0.03 Acres
Taxes and HOA fees
- Tax Annual Amount
- 7434
Building Details
- Year built
- 1930
- Floors in Building
- 2
- Flooring type
- Tile, Hardwood
- Roof type
- Shingle
- Architectural style
- Other
Listing Agency
Ideal Properties Realty, LLC
(718) 576-2663
1816 Avenue J, Brooklyn, NY
Listed by
Dalia Samouha
(718) 576-2663
Added: Jun 18 Checked: Jul 18 at 6:06 am
MLS# 502409
Listing URL
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 residential duplex offering features 3 bedrooms and 4 bathrooms, with private parking for up to five cars. Inside, the home includes a foyer with intricate tilework, radiant heated floors, and multiple built-in storage spaces. The main level offers a living room with custom built-ins and a formal dining room, along with an eat-in kitchen with custom cabinetry, a center island, double sinks, and a Viking stove/oven with warming drawer.
Outside, there is a private backyard with a custom gated deck, pergola, and a built-in barbecue area. The second floor provides a spacious primary bedroom with custom closets, two additional bedrooms, and 1.5 finished bathrooms. The fully finished basement adds bonus space with two extra rooms, a playroom, laundry room, 3/4 bath, utility room, and ample storage.
A detached garage has been converted to an office, den, or gym and includes its own split-unit system. Additional features include 2-zone radiant heat and 2-zone central air.
Outside, there is a private backyard with a custom gated deck, pergola, and a built-in barbecue area. The second floor provides a spacious primary bedroom with custom closets, two additional bedrooms, and 1.5 finished bathrooms. The fully finished basement adds bonus space with two extra rooms, a playroom, laundry room, 3/4 bath, utility room, and ample storage.
A detached garage has been converted to an office, den, or gym and includes its own split-unit system. Additional features include 2-zone radiant heat and 2-zone central air.
Key Highlights
- 3 bedrooms and 4 bathrooms in a 1930‑built Marine Park home
- Private parking for up to 5 cars, plus a detached garage converted to an office, den, or gym
- 2‑zone radiant heat and 2‑zone central air, with radiant heated floors in the foyer
Local Financial Insights For Multifamily LT 5
Simulate Cap Rate and NOI
NOI Build-Up
- Vacancy
- income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
- EGI (Effective Gross Income)
- gross rent minus vacancy losses — the realistic income before paying operating costs.
- OpEx (Operating Expenses)
- recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
- NOI (Net Operating Income)
- income a property generates after operating costs but before financing and taxes.
| Component | $ | $/SF |
|---|---|---|
| Gross rent | $71.8k | $51.00 |
| − Vacancy | −$1.4k | −$0.97 |
| EGI | $70.4k | $50.03 |
| − OpEx | −$21.1k | −$15.01 |
| NOI | $49.3k | $35.02 |
1,408 SF · lease $51.00/SF/yr · vacancy 1.90% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$704.4K
$616.4K – $821.9K
NOI $49,311 @ 7.0% cap · market cap 3.82%
Second Best
Apartment 5plus
$614.1K
$537.3K – $716.4K
NOI $42,985 @ 7.0% cap · market cap 3.33%
Theoretical Best
Specialty Retail
$1.17M
$1.02M – $1.36M
NOI $81,608 @ 7.0% cap · market cap 6.33%
Zoning and permitted uses should be independently verified with local authorities.
Property Analytics
Property Profile
Location Intelligence
Current Use by Public Records
Duplexes
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FAQs
What type of property is this?
Duplex - Duplex home with private parking for up to five cars, a finished basement, and a detached garage converted for flexible space.
Where is this duplex located?
The property is located at 3627 Flatlands Avenue Brooklyn, NY.
What is the asking price?
The asking price for this property is $1,290,000.
What are key features of this property?
This property features: 3 bedrooms and 4 bathrooms in a 1930‑built Marine Park home; Private parking for up to 5 cars, plus a detached garage converted to an office, den, or gym; 2‑zone radiant heat and 2‑zone central air, with radiant heated floors in the foyer
