Duplex with Private Basement
13 William St, Flemington, NJ 08822
- Added:
- Apr 1, 2026
- Days on Market:
- 98
- Last Refresh:
- Jul 7 at 12:06 pm
Property Features for 13 William St
General Information
- Property type
- Residential Multi Family
- Property subtype
- Other
- Bedrooms
- 6
- Bathrooms
- 3
- Rooms
- Bedroom 1, Bedroom 2, Basement, Bedroom 3, Bedroom 6, Bedroom 4, Bedroom 5, Bathroom 2, Bathroom 3, Bathroom 1, Bathroom 4
- Parking
- 6
- Standard status
- Pending
- Lot size
- 0.22 Acres
Taxes and HOA fees
- Tax Year
- 2025
- Tax Annual Amount
- 11362
Utilities
- Sewer type
- Public Sewer
- Heating system
- Other (Heating), Hot Water(Heating)
- Water source
- Public
Building Details
- Year built
- 1945
- Number of units
- 2
- Roof type
- Shingle
- Architectural style
- Other
Listing agent LIAM COONAHAN
Listing office REAL 165 PASSAIC AVE STE 205, Haddon Township, NJ (855) 450-0442
Listing date Apr 1, 2026
MLS# 4017912
Listing URL
Copyright © 2026 Garden State MLS, LLC. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
HighLights
- Well‑maintained duplex built in 1945 with both units in very good condition
- Each unit has 3 bedrooms and 1.5 bathrooms with approximately 1,300 SF of living space per unit
- Fully occupied with reliable, long‑term tenants for immediate rental income
- Each unit has its own private basement access for added storage and tenant convenience
- Utilities are separately metered for both units
- Public water and public sewer; shingle roof; large yard with parking in the back
Overview
This well-maintained duplex consists of two separate residential units, each with three bedrooms and 1.5 bathrooms and approximately 1,300 square feet of living space. Both units are described as being in very good condition. Each unit also has its own private basement access, which can support in-home storage and day-to-day functionality.
The property is located at 13 William St in Flemington Boro, NJ. It is positioned on a lot sized at 0.22 acres and includes a large yard. Parking is provided in the back of the property, which can help keep day-to-day access organized. The listing also notes the home is fully occupied with long-term tenants.
From a tenant and operator standpoint, the duplex configuration can appeal to buyers seeking an income-producing property with established occupancy. The listing further states that all utilities are separately metered, which may simplify billing and ongoing management. With two similar unit layouts and dedicated basement access for each side, the property may offer practical setup for day-to-day operations.
The property is located at 13 William St in Flemington Boro, NJ. It is positioned on a lot sized at 0.22 acres and includes a large yard. Parking is provided in the back of the property, which can help keep day-to-day access organized. The listing also notes the home is fully occupied with long-term tenants.
From a tenant and operator standpoint, the duplex configuration can appeal to buyers seeking an income-producing property with established occupancy. The listing further states that all utilities are separately metered, which may simplify billing and ongoing management. With two similar unit layouts and dedicated basement access for each side, the property may offer practical setup for day-to-day operations.
Local 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 | $66.5k | $25.56 |
| − Vacancy | −$4.3k | −$1.65 |
| EGI | $62.2k | $23.91 |
| − OpEx | −$18.6k | −$7.17 |
| NOI | $43.5k | $16.74 |
2,600 SF · lease $25.56/SF/yr · vacancy 6.46% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$621.6K
$543.9K – $725.2K
NOI $43,514 @ 7.0% cap · market cap 6.70%
Second Best
Apartment 5plus
$571.2K
$499.8K – $666.4K
NOI $39,983 @ 7.0% cap · market cap 6.15%
Theoretical Best
Office A
$678.9K
$594.1K – $792.1K
NOI $47,524 @ 7.0% cap · market cap 7.31%
Zoning and permitted uses should be independently verified with local authorities.
Property Profile
Location Intelligence
Current Use by Public Records
Duplexes
Location Insight
- Map
- Local Demand
- City
- Flemington
- County
- Hunterdon
- State
- New Jersey
- Longitude
- -74.85711
- Latitude
- 40.50821
Nearby Similar for Sale
FAQs
What type of property is this?
Duplex - Well-maintained duplex offers two 3-bedroom units with private basement access and separate utilities for straightforward management.
Where is this duplex located?
The property is located at 13 William St Flemington, NJ.
What is the asking price?
The asking price for this property is $649,900.
What are key features of this property?
This property features: Well‑maintained duplex built in 1945 with both units in very good condition; Each unit has 3 bedrooms and 1.5 bathrooms with approximately 1,300 SF of living space per unit; Fully occupied with reliable, long‑term tenants for immediate rental income
