Duplex with Private
For Sale
$1,150,000
633 71st Street, Brooklyn, NY 11209
SINGLE_FAMILY - Brooklyn, NY
Property Size1,257 SF
Lot Size0.02 Acres
Price / SF$914.88
Days on Market66
Property Features for 633 71st Street
General Information
Property type
Residential
Property subtype
Duplex
Zoning
R4-1
Bedrooms
2
Bathrooms
2
Full bathrooms
2
Rooms
Bathroom 1, Bathroom 2, Bedroom 1, Bedroom 2
Parking features
Carport
Interior features
Dryer, Refrigerator, Stove, Terrace, Washer
Basement
Finished, Full
Subdivision
Bay Ridge
Standard status
Active
Size
1,257 SF
Lot size
0.02 Acres
Taxes and HOA fees
Tax Annual Amount
6742
Building Details
Year built
1930
Floors in Building
2
Flooring type
Hardwood
Building materials
Brick
Roof type
Flat
Architectural style
Other
Listing Agency:
Re/Max Real Estate Professiona
(718) 872-5522
Listed By:
Huizhen (Rose) Li
(718) 532-2000
Added: Jun 29
Changed: Jul 30
Last Checked: Sep 2 at 11:06AM
MLS# 502646
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.
Duplex residence with 1,257 square feet of interior space on a 0.0172-acre lot, built in 1930. The home features brick construction, a flat roof, and hardwood floors. The main level includes a spacious living area that can function as a home office or formal dining room, along with an updated kitchen. On the second floor, there are two large bedrooms, a full bathroom, and one bedroom with access to a private terrace. A fully finished basement includes a separate entrance, and washer and dryer units are available on two floors.
Parking is provided via a carport. The property is located near schools, shopping, banks, restaurants, parks, and transit including the R train and buses, with convenient access to I-278.
Zoning is listed as R4-1.
Parking is provided via a carport. The property is located near schools, shopping, banks, restaurants, parks, and transit including the R train and buses, with convenient access to I-278.
Zoning is listed as R4-1.
Key Highlights
- Finished basement with a separate entrance
- Private terrace access from a second‑floor bedroom
- 1,257 SF interior space
Financial Insights
Estimated NOI and Cap Rate
NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$44,022
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
3.83%
Suggested Prices Based on Cap Rates
Cap rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$880,440
$880.4K
Cap Rate 7%
$628,886
$628.9K
Cap Rate 9%
$489,133
$489.1K
Market Conditions
NOI Build-Up for 1,257 SF
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.
Gross rent
$64.1K $51.00/SF
− Vacancy
−$1.2K −$0.97/SF
EGI
$62.9K $50.03/SF
− OpEx
−$18.9K −$15.01/SF
NOI
$44.0K $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 rates vary significantly by property type, market, and asset quality.
Typical U.S. stable-market ranges:
Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+)
Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand)
Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically)
Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher)
Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk)
Self-Storage — 5.5% to 7.5%
Medical Office — 6.0% to 7.5%
Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term
Rules of thumb:
Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%).
Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C.
Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI.
Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$880,440
Cap Rate 7%
$628,886
Cap Rate 9%
$489,133
Alternative Uses
Best Use
Multifamily LT 5
$628.9K
$550.3K – $733.7K
NOI $44,022 @ 7.0% cap · market cap 3.83%
Second Best
Apartment 5plus
$548.2K
$479.7K – $639.6K
NOI $38,375 @ 7.0% cap · market cap 3.34%
Theoretical Best
Specialty Retail
$1.04M
$910.7K – $1.21M
NOI $72,856 @ 7.0% cap · market cap 6.34%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Location Intelligence
Trade Area within ½ mile
5,975
Businesses Nearby
Explore this area
Business Placement
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
Market
Vacancy Rate% for Multifamily in Northeast region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Duplex in R4-1 zoning with private terrace access and a finished basement with separate entrance.
Where is this duplex located?
The property is located at 633 71st Street Brooklyn, NY.
What is the asking price?
The asking price for this property is $1,150,000.
What are key features of this property?
This property features: Finished basement with a separate entrance; Private terrace access from a second‑floor bedroom; 1,257 SF interior space
