Two-Family Duplex with
666 Armstrong Avenue Staten Island, NY 10308
For Sale
Contact for pricing
Two-family duplex featuring a 6-over-6 layout, private driveway, and full basement with laundry access.
Property Size2,680 SF
Price / SF$429.10
Days on Market25
Property Features for 666 Armstrong Avenue
General Information
- Standard status
- Active
- Size
- 2,680 SF
- Property subtype
- Multifamily
Building Details
- Year Built
- 1970
Listing Agency:
Keller Williams Staten Island Realty
Listed By:
John Martelotti · License #10991231565
Source:
Crexi
Added: Jul 2
Changed: Jul 21
Last Checked: Jul 25 at 10:43AM
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 Keller Williams Staten Island Realty
Investment Insights
Based on property information with market context.
This well-maintained two-family duplex at 666 Armstrong Avenue offers a classic 6-over-6 configuration. Both the first and second-floor units include six rooms, with a formal living room, formal dining area, eat-in kitchen, full bathroom, and a primary bedroom with a private half bathroom. Each unit also provides two additional bedrooms with closet space.
The property includes a large private driveway and an extra-deep lot with room for a backyard. A full basement provides storage and laundry access, along with additional half bathroom space and plumbing set up for an extra kitchen.
A new roof was installed in 2023. The overall layout is designed to support separate living arrangements across both floors while maintaining substantial usable space below.
The property includes a large private driveway and an extra-deep lot with room for a backyard. A full basement provides storage and laundry access, along with additional half bathroom space and plumbing set up for an extra kitchen.
A new roof was installed in 2023. The overall layout is designed to support separate living arrangements across both floors while maintaining substantial usable space below.
Key Highlights
- Well‑maintained two‑family duplex built in 1970 with a classic 6‑over‑6 layout
- Each unit features a formal living room, formal dining, eat‑in kitchen, full bath, and 3 bedrooms
- Primary bedroom includes a private half bathroom; additional bedrooms have ample closet space
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 | $99.7k | $37.20 |
| − Vacancy | −$4.5k | −$1.67 |
| EGI | $95.2k | $35.53 |
| − OpEx | −$28.6k | −$10.66 |
| NOI | $66.6k | $24.87 |
2,680 SF · lease $37.20/SF/yr · vacancy 4.50% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$952.1K
$833.1K – $1.11M
NOI $66,647 @ 7.0% cap · market cap 5.80%
Second Best
Apartment 5plus
$849.0K
$742.9K – $990.5K
NOI $59,432 @ 7.0% cap · market cap 5.17%
Theoretical Best
Office A
$1.28M
$1.12M – $1.49M
NOI $89,513 @ 7.0% cap · market cap 7.78%
Zoning and permitted uses should be independently verified with local authorities.
Property Analytics
Location Intelligence
Current Use by Public Records
Duplexes
FAQs
What type of property is this?
Duplex - Two-family duplex featuring a 6-over-6 layout, private driveway, and full basement with laundry access.
Where is this duplex located?
The property is located at 666 Armstrong Avenue Staten Island, 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: Well‑maintained two‑family duplex built in 1970 with a classic 6‑over‑6 layout; Each unit features a formal living room, formal dining, eat‑in kitchen, full bath, and 3 bedrooms; Primary bedroom includes a private half bathroom; additional bedrooms have ample closet space
