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$599,999 Just Listed

  • For Sale
  • Active
  • Multi-Family
  • 4 Total Beds
  • Updated 3 hours ago
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Located in the highly desirable Bertrand Island community of Mount Arlington, this charming two-family home offers the perfect blend of lifestyle and investment potential. Just a short walk to the shores of Lake Hopatcong, you'll enjoy beautiful lake views and all the charm of one of the area's most sought-after neighborhoods.Known for its quiet streets, friendly atmosphere, and unique peninsula-like setting, Bertrand Island offers a peaceful lakeside retreat while remaining conveniently close to shopping, dining, major highways, and NJ Transit. Whether you're looking to owner-occupy and offset your mortgage with rental income or expand your investment portfolio, this versatile property presents a fantastic opportunity.Experience the best of lake living in a welcoming community where scenic views, walkability, and year-round recreation are all within easy reach.

Full Property Details for 20 Oak St

General

  • Price: $599,999
  • Taxes: $7,073 (2025)
  • Status: Active
  • Type: Multi-Family
  • Source: Garden_State
  • MLS ID: 4039125
  • Updated: 7/8/2026
  • Added to Site: 1 day(s) ago

Interior

  • Number of Rooms: 6

Rooms

Bathrooms

  • Total Bathrooms: 2
  • Full Bathrooms: 2

Bedrooms

  • Total Bedrooms: 4

Location

  • County: Morris
  • Driving Directions: From Bertrand Island Road make a right onto Oak St.

Heating & Cooling

  • Cooling Type: Window A/C(s)
  • Heating Type: Radiators - Steam
  • Heating Fuel: Electric, Oil Tank Above Ground - Outside

Utilities

  • Sewer: Public Sewer
  • Water: Public Water
  • Utility Description: Electric, Gas In Street

Structural Information

  • Architectural Style: 2-Two Story
  • Exterior Const.: Vinyl Siding
  • Roof: Asphalt Shingles
  • Year Built: 1904

Unit Information

Unit 1

  • Unit Description: Bedrooms, Kitchen, Living/Dining Room, Porch
  • Square Feet: 9999
  • Levels/Stories: 1
  • Total Bathrooms: 1
  • Bedrooms: 2

Unit 2

  • Unit Description: Bedrooms, Dining Room, Kitchen, Living Room
  • Square Feet: 9999
  • Levels/Stories: 1
  • Total Bathrooms: 1
  • Bedrooms: 2

Lot Features

  • Lot Size (Acres): 0.18
  • Lot Dimensions: 0.184 AC
  • Driveway/Sidewalk: Additional Parking, Blacktop, Driveway-Exclusive

Financial Considerations

  • Operating Expenses: $9,999
  • Assessment Amount: $172,900
  • Land Assmt: $148,200
  • Tax Amount: $7,073
  • Tax Year: 2025

Disclosures and Reports

  • Block: 39
  • Lot Number: 23

Listed by Realty Of America

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Listing agent

— 20 Oak St —

  • Realty Of America

833-256-4244

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Price & Sales History for 20 Oak St Get Price Alerts and Save Property

Date
Details
Price
Change
Source
7/07/2026
Listed
$599,999
89.27%
MLS
10/12/2006
Sold
$317,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 20 Oak St

Year
Property Taxes
Change
Tax Assessment
Change
2024
$6,538
17%
$321,100
—
2022
$5,609
5%
$321,100
59%
2021
$5,319
—
$201,900
—
2018
$5,308
—
$201,900
—
2019
$5,320
1%
$201,900
—
2017
$5,247
—
$201,900
—
2016
$5,237
12%
$201,900
10%
2015
$4,685
3%
$183,800
—
2013
$4,556
—
$183,800
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

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NMLS#: 1598647

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Listed by Realty Of America

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20 Oak St, Mount Arlington, NJ 07856 (MLS# 4039125) is a Multi-Family property with 2 units containing 4 bedrooms and 2 full bathrooms. 20 Oak St is currently listed for $599,999 and was received on July 07, 2026. Want to learn more about 20 Oak St? Do you have questions about finding other Multi-Family real estate for sale in Mount Arlington? You can browse all Mount Arlington real estate or contact a Coldwell Banker agent to request more information.

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