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Two-Unit Duplex with Basement
For Sale
$729,999

237 Middlesex Ave, Iselin, NJ 08830

Income-producing residential property with separate driveways and a flexible two-level layout.

Property SizeContact for details
Days on Market23

Property Features for 237 Middlesex Ave

General Information

Standard status Active
Property subtype Residential Income

Additional Details

Public Transit Yes
Multifamily Units 2

Taxes and HOA fees

Annual Taxes $14,270
Listing Agency: EXP REALTY, LLC
Listed By: JASON ECKERT
Source: Exprealty
Added: Aug 7 Changed: Aug 28 Last Checked: Aug 12 at 4:26AM

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 EXP REALTY, LLC

Investment Insights

Based on property information with market context.

Built in 1955, this 2,288-square-foot duplex includes two distinct residential units with separate driveways. The lower-level residence offers three bedrooms, three full bathrooms, and a full basement, while the upper unit contains two bedrooms and one full bathroom. The property is being sold strictly as-is, with buyers responsible for evaluating condition and any applicable municipal requirements.

The home is positioned near the Metropark train station, shopping, restaurants, major highways, and other local amenities. Its two-unit configuration and varied layouts provide a residential income property format for an investor or an owner-occupant, subject to due diligence and applicable requirements.

Key Highlights

  • 2,288‑square‑foot duplex built in 1955
  • First‑floor unit has 3 bedrooms, 3 full bathrooms, and a full basement
  • Second‑floor unit includes 2 bedrooms and 1 full bathroom

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Dental Office Real Estate Agency Auto Parts Store Gym & Fitness Center Spa & Massage Center Electrical Service

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

806
Businesses Nearby

Demographics for 08830, NJ

20,088
Population
6,618
Households
3
Avg Household Size
39
Median Age
55%
College-Educated
89%
High-School Grad
3.2 sq mi
ZIP Area
6,278
Density / Sq Mi
$112,615
Median Household Income
$61,805
Median Earnings
$2,051
Median Rent
$394,200
Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
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Frequently Asked Questions

What type of property is this?
Duplex - Income-producing residential property with separate driveways and a flexible two-level layout.
Where is this duplex located?
The property is located at 237 Middlesex Ave Iselin, NJ.
What is the asking price?
The asking price for this property is $729,999.
What are key features of this property?
This property features: 2,288‑square‑foot duplex built in 1955; First‑floor unit has 3 bedrooms, 3 full bathrooms, and a full basement; Second‑floor unit includes 2 bedrooms and 1 full bathroom
More about this property
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