Brick Duplex with Finished
For Sale
$875,000
4821 Avenue K, Brooklyn, NY 11234
Two apartments include full bathrooms, plus a private balcony and off-street parking.
Property Size1,824 SF
Days on Market39
Property Features for 4821 Avenue K
General Information
Standard status
Active
Size
1,824 SF
Total Parking Spaces
1
Property subtype
Residential Income
Units
Unit Mix
2 x 2BR/1BA
Multifamily Units
2
Additional Details
Public Transit
Yes
Taxes and HOA fees
Annual Taxes
$7,526
Amenities
private balcony
finished basement
Building Details
Building Size
1,824 SF
Year Built
1920
Buildings
1
Units
2
Construction
brick
Listing Agency:
1 Oak Real Estate Hub Inc
(718) 395-0580
Listed By:
Jennifer James
(718) 974-8284
Source:
Millenniumhomes
Added: Aug 2
Changed: Sep 8
Last Checked: Sep 7 at 3:33PM
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 1 Oak Real Estate Hub Inc
Investment Insights
Based on property information with market context.
This brick two-family residence is arranged as a 2-bedroom apartment over a 2-bedroom apartment, with a full bathroom serving each unit. The first-floor apartment includes a private balcony, while the fully finished basement has its own entrance and provides additional flexible space. A shared driveway leads to a one-car garage for off-street parking.
The property is located at 4821 Avenue K in Brooklyn’s Flatlands neighborhood, with access to Utica Avenue, Flatlands Avenue, and Flatbush Avenue. Transit options include the B46, B82, and BM1 express bus service to Manhattan.
The property is located at 4821 Avenue K in Brooklyn’s Flatlands neighborhood, with access to Utica Avenue, Flatlands Avenue, and Flatbush Avenue. Transit options include the B46, B82, and BM1 express bus service to Manhattan.
Key Highlights
- Two‑family brick residence with a 2‑bedroom over 2‑bedroom layout
- Each apartment includes 1 full bathroom
- First‑floor apartment has a private balcony
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
$63,880
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
7.30%
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%
$1,277,600
$1.3M
Cap Rate 7%
$912,571
$912.6K
Cap Rate 9%
$709,778
$709.8K
Market Conditions
NOI Build-Up for 1,824 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
$93.0K $51.00/SF
− Vacancy
−$1.8K −$0.97/SF
EGI
$91.3K $50.03/SF
− OpEx
−$27.4K −$15.01/SF
NOI
$63.9K $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%
$1,277,600
Cap Rate 7%
$912,571
Cap Rate 9%
$709,778
Alternative Uses
Best Use
Multifamily LT 5
$912.6K
$798.5K – $1.06M
NOI $63,880 @ 7.0% cap · market cap 7.30%
Second Best
Apartment 5plus
$795.5K
$696.1K – $928.1K
NOI $55,685 @ 7.0% cap · market cap 6.36%
Theoretical Best
Specialty Retail
$1.51M
$1.32M – $1.76M
NOI $105,719 @ 7.0% cap · market cap 12.08%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
2,729
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
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 - Two apartments include full bathrooms, plus a private balcony and off-street parking.
Where is this duplex located?
The property is located at 4821 Avenue K Brooklyn, NY.
What is the asking price?
The asking price for this property is $875,000.
What are key features of this property?
This property features: Two‑family brick residence with a 2‑bedroom over 2‑bedroom layout; Each apartment includes 1 full bathroom; First‑floor apartment has a private balcony
