Waterfront Detached Duplex with Boat
For Sale
$1,388,000
8 Post Court, Brooklyn, NY 11229
Residential, Brooklyn, NY
Property Size3,200 SF
Lot Size0.15 Acres
Price / SF$433.75
Days on Market465
Property Features for 8 Post Court
General Information
Property type
Residential Multi Family
Property subtype
Other
Zoning
R4
Bedrooms
5
Bathrooms
3
Full bathrooms
2
Half bathrooms
1
Rooms
Bedroom 1, Bedroom 4, Bathroom 3, Bedroom 2, Bedroom 5, Bathroom 2, Bedroom 3, Bathroom 1
Parking features
Garage - Detached
Patio and Porch features
Porch
Interior features
Central Air, Dishwasher, Dryer, Microwave, Porch, Refrigerator, Stove, Washer
Basement
Unfinished, Crawl Space
Subdivision
Gerritsen Beach
Standard status
Active
Size
3,200 SF
Lot size
0.15 Acres
Taxes and HOA fees
Tax Annual Amount
5401
Amenities
waterfront slip
central air conditioning
rear deck
terrace
Building Details
Year built
1970
Floors in Building
2
Number of units
2
Flooring type
Tile, Hardwood
Building materials
Wood Frame
Roof type
Shingle
Listing Agency:
Winzone Realty Inc
Listed By:
Joseph Yan
(718) 676-6611
Added: Jun 17, 2025
Changed: Sep 15
Last Checked: Sep 24 at 4:06AM
MLS# 493492
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 fully detached duplex in Brooklyn’s Gerritsen Beach includes two dwellings, five bedrooms, and three bathrooms. The property offers waterfront views and a boat slip, along with a large rear deck and terrace. Separate water heaters and gas boilers serve the dwellings, while central air conditioning provides additional interior comfort. Interior finishes include tile and hardwood flooring, and the home includes a kitchen with a stove, refrigerator, dishwasher, microwave, washer, and dryer.
The property also features two private driveways and a detached garage. Built in 1970, the wood-frame residence has a shingle roof and porch. R4 zoning is supported by the property information.
The property also features two private driveways and a detached garage. Built in 1970, the wood-frame residence has a shingle roof and porch. R4 zoning is supported by the property information.
Key Highlights
- Waterfront duplex with boat slip
- Five bedrooms and three bathrooms
- Two private driveways plus detached garage
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
$112,069
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
8.07%
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%
$2,241,380
$2.2M
Cap Rate 7%
$1,600,986
$1.6M
Cap Rate 9%
$1,245,211
$1.2M
Market Conditions
NOI Build-Up for 3,200 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
$163.2K $51.00/SF
− Vacancy
−$3.1K −$0.97/SF
EGI
$160.1K $50.03/SF
− OpEx
−$48.0K −$15.01/SF
NOI
$112.1K $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%
$2,241,380
Cap Rate 7%
$1,600,986
Cap Rate 9%
$1,245,211
Alternative Uses
Best Use
Multifamily LT 5
$1.60M
$1.40M – $1.87M
NOI $112,069 @ 7.0% cap · market cap 8.07%
Second Best
Apartment 5plus
$1.40M
$1.22M – $1.63M
NOI $97,693 @ 7.0% cap · market cap 7.04%
Theoretical Best
Specialty Retail
$2.65M
$2.32M – $3.09M
NOI $185,472 @ 7.0% cap · market cap 13.36%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Open Analytics
Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
523
Businesses Nearby
Explore this area
Business Placement
Demographics for 11229, NY
83,669
Population
33,353
Households
2.5
Avg Household Size
40
Median Age
41%
College-Educated
88%
High-School Grad
2.0 sq mi
ZIP Area
41,835
Density / Sq Mi
$72,556
Median Household Income
$52,948
Median Earnings
$1,666
Median Rent
$812,200
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
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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 - Fully detached two-dwelling property with waterfront exposure, private parking, and separate heating systems.
Where is this duplex located?
The property is located at 8 Post Court Brooklyn, NY.
What is the asking price?
The asking price for this property is $1,388,000.
What are key features of this property?
This property features: Waterfront duplex with boat slip; Five bedrooms and three bathrooms; Two private driveways plus detached garage
