Brick Duplex with Private
For Sale
$699,000
3707 Nautilus Avenue, Brooklyn, NY 11224
MULTI_FAMILY - Brooklyn, NY
Property Size1,851 SF
Lot Size0.05 Acres
Price / SF$377.63
Days on Market287
Property Features for 3707 Nautilus Avenue
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Zoning
R3-1
Bedrooms
3
Bathrooms
3
Full bathrooms
1
Rooms
Bedroom 2, Bedroom 3, Bathroom 3, Bathroom 2, Bedroom 1, Bathroom 1
Parking features
Carport
Lot features
Front Yard, Back Yard
Subdivision
Sea Gate
Standard status
Active
APN
07003-0042
Size
1,851 SF
Lot size
0.05 Acres
Taxes and HOA fees
Tax Annual Amount
5700
Utilities
Sewer type
Public Sewer
Heating system
Forced Air, Natural Gas
Amenities
private backyard
24-hour security
gated entrance
private beach
Building Details
Year built
1945
Floors in Building
1
Number of units
2
Building materials
Brick
Listing Agency:
Gillani Homes Inc.
(718) 442-4400
Listed By:
John Guastella
(917) 445-3389
Added: Nov 25, 2025
Changed: Aug 2
Last Checked: Sep 8 at 7:06AM
MLS# 2506852
Copyright © 2026 Staten Island Board of Realtors. 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.
Brick two-story duplex in the Seagate gated beach community, offering a flexible living arrangement and rental opportunity. The home is in good condition overall, with the first-floor rental apartment described as needing some TLC. Total livable area is 1,851 SF. The ground floor features a spacious 1-bedroom apartment with a large living room, bathroom space, and a separate eat-in kitchen area. The second floor includes 2 bedrooms with closets, a huge living room, an eat-in kitchen, and a full-size bathroom. Outside, the property includes a large private backyard and a driveway leading to a 1-car attached garage. A utility room behind the garage houses a furnace and water heater, both noted as 1 year old.
Set on a 22 x 100 lot (0.0505 acres), the property is located in Seagate with 24-hour security and a gated entrance, plus short-distance access to the community’s private beach. Public transportation is nearby, including city bus and express bus service to Manhattan, with city bus connections to subway trains. The home is heated with forced air natural gas and served by public sewer.
Built in 1945, this duplex provides a straightforward two-level layout with distinct living spaces and on-site off-street parking via the driveway and attached garage, supported by public utilities.
Set on a 22 x 100 lot (0.0505 acres), the property is located in Seagate with 24-hour security and a gated entrance, plus short-distance access to the community’s private beach. Public transportation is nearby, including city bus and express bus service to Manhattan, with city bus connections to subway trains. The home is heated with forced air natural gas and served by public sewer.
Built in 1945, this duplex provides a straightforward two-level layout with distinct living spaces and on-site off-street parking via the driveway and attached garage, supported by public utilities.
Key Highlights
- 0.0505‑acre lot (22 x 100) in a gated Seagate community with 24‑hour security
- 1,851 SF brick, two‑story duplex layout with separate first‑floor and second‑floor residences
- First‑floor 1‑bedroom apartment needs some TLC; second floor has 2 bedrooms plus eat‑in kitchen and full bath
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
$56,509
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
8.08%
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%
$1,130,180
$1.1M
Cap Rate 7%
$807,271
$807.3K
Cap Rate 9%
$627,878
$627.9K
Market Conditions
NOI Build-Up for 1,851 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
$104.8K $56.64/SF
− Vacancy
−$2.1K −$1.13/SF
EGI
$102.7K $55.51/SF
− OpEx
−$46.2K −$24.98/SF
NOI
$56.5K $30.53/SF
Area
Brooklyn, NY
Vacancy
2.00%
Lease Rate
$56.64 /SF/Yr
Expense Ratio
45.00%
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%
$1,130,180
Cap Rate 7%
$807,271
Cap Rate 9%
$627,878
Alternative Uses
Best Use
Multifamily LT 5
$926.1K
$810.3K – $1.08M
NOI $64,825 @ 7.0% cap · market cap 9.27%
Second Best
Apartment 5plus
$807.3K
$706.4K – $941.8K
NOI $56,509 @ 7.0% cap · market cap 8.08%
Theoretical Best
Specialty Retail
$1.53M
$1.34M – $1.79M
NOI $107,284 @ 7.0% cap · market cap 15.35%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
Multi-tenant
Tenancy
Location Intelligence
Trade Area within ½ mile
649
Businesses Nearby
Explore this area
Business Placement
Demographics for 11224, NY
46,019
Population
21,354
Households
2.2
Avg Household Size
46
Median Age
33%
College-Educated
82%
High-School Grad
1.6 sq mi
ZIP Area
28,762
Density / Sq Mi
$41,449
Median Household Income
$41,233
Median Earnings
$905
Median Rent
$512,900
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 - Zoned R3-1 duplex in a gated beach community with an attached garage, private backyard, and public sewer service.
Where is this duplex located?
The property is located at 3707 Nautilus Avenue Brooklyn, NY.
What is the asking price?
The asking price for this property is $699,000.
What are key features of this property?
This property features: 0.0505‑acre lot (22 x 100) in a gated Seagate community with 24‑hour security; 1,851 SF brick, two‑story duplex layout with separate first‑floor and second‑floor residences; First‑floor 1‑bedroom apartment needs some TLC; second floor has 2 bedrooms plus eat‑in kitchen and full bath
