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Mastic Beach 11951 Mastic
137 Riverside Avenue
Photo of 137 Riverside Avenue
Sold on Apr 23, 2026

26

Map

Photo of 137 Riverside Avenue
Photo of 137 Riverside Avenue
$465,000
● House - Off Market

137 Riverside Avenue

Brookhaven, NY 11951
bedrooms
3 Beds
bathrooms
1 Bath
square feet
1,161 Ft²
$2,732
Est. Monthly

About This Property

This beautifully maintained 3 Bedroom Ranch offers the perfect blend of comfort, charm, and convenience with easy one-level living on a generous property in the William Floyd School District. Featuring hardwood floors and a bright, airy layout ideal for entertaining, this home includes a welcoming living room and a spacious eat-in kitchen with a large dining area-perfect for gatherings and everyday living. Enjoy peace of mind with major updates already completed, including a new heating system, new roof, updated siding, and windows, providing both efficiency and lasting value. Step outside to your private backyard retreat where the property extends down to a peaceful creek, offering a rare natural setting and a serene backdrop for relaxing, entertaining, or enjoying the outdoors. A fantastic opportunity to own a move-in ready home with valuable upgrades, conveniently located close to beaches, parks, shopping, and transportation. Call today for a private showing
Unit Size
1,161 Ft²
Days on Market
70 days
Land Size
0.33 acres
Price per sqft
$388
Property Type
House
Property Taxes
$522
HOA Dues
-
Year Built
-

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Cap Rate Calculator

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Cap Rate 100% Occupancy
N/A (extreme outlier)

What does this mean?

Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.

How much can I actually make?

Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.

How is cap rate calculated?

Cap Rate = Net Operating Income (NOI) / Property Asset Value.

When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.

Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.

Last updated: 6 months ago (OneKey MLS #KEY959543)

Price History

Date / Event Date Event Price
Apr 23, 2026 Sold
Premium
Sold
Mar 31, 2026 In contract -
In contract
Mar 18, 2026 In contract -
In contract
Feb 7, 2026 Listed by Signature Homes of New York $450,000
Listed by Signature Homes of New York
Jan 1, 2026 No longer available -
No longer available
Show More

Property Highlights

Garage

Building Info

Overview

    General

  • Bedroom Count: 0
  • Building Condition: 0
  • Building Quality: 0
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0
  • Location Influence Type: N

    Dimensions

  • Lot Size Square Feet: 14,375
  • Total Building Area: 0
  • Building Area: 0

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: MAP OF MASTIC ACRES
  • Land Acres: 0000000330
  • Standard Land Use Code: 1001
  • County Land Use Code: 210

Neighborhood

  • School District Name: William Floyd Union Free School District
  • School Tax School District: WILLIAM FLOYD
  • Census Tract: 159512

Geography

  • Account Number: 00004102470
  • District: 472200
  • Section: 2
  • Parcel: 0209-002.00-01.00-016.000
  • Block: 1
  • Lot: 16
  • Municipality: BROOKHAVEN
  • Latitude: 40.7862
  • Longitude: -72.8419

    Address

  • Full Address: 137 Riverside Ave
  • Address - House Number: 137
  • Address - Street Name: Riverside
  • Address - Suffix Type: Ave
  • State: NY
  • City Name: Mastic Beach
  • Carrier Code: C003
  • 4-Digit Zip Code: 1123
  • Zip Code: 11951

Valuation

    Tax

  • Tax Year: 2019
  • Tax Amount: $617,464
  • Tax Rate Code Area: 472232

    Appraisal Valuation

  • Standard Deviation: 0.2664
  • Valuation Date: Jul 17, 2019
  • Confidence Score: 70
  • Final Value: 226,413
  • High Value: 286,745
  • Low Value: 166,080

    Market Valuation

  • Market Total Value: $184,443
  • Market Land Value: $16,666
  • Market Improvement Value: $167,777

    Assessments Valuation

  • Assessed Year: 2017
  • Assessed Total Value: $1,660
  • Assessed Land Value: $150
  • Assessed Improvements Value: $1,510
Data used for valuation calculations is provided by RealtyHop, and other third party sources
Request mortgage information redaction

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Mastic

Stats & Trends

Median Asking:

$525,000

Sale Price/ft²

$353

Above Asking

0.00%

Average Days on Market

86

Average Home Size

1979 ft²

Average Home Age

47.7 years

Currently For Sale

36 Listings
Based on RH Advisors, Inc. calculations of home data from MLS and/or public records.

Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 14 Mastic Boulevard, Mastic, NY, 11950

$3,999 /mo

  • 4 Beds
  • 3 Baths
  • 2,002 ft²
14 Mastic Boulevard, Mastic, NY, 11950 Listing by Binit Kumar
Unit for rent at 356 Cypress Drive, Mastic Beach, NY, 11951

$3,600 /mo

  • 3 Beds
  • 1 Bath
  • 1,058 ft²
356 Cypress Drive, Mastic Beach, NY, 11951 Listing by Marie Jaffary
Unit for rent at 192 Cypress Drive, Mastic Beach, NY, 11951

$3,800 /mo

  • 4 Beds
  • 2 Baths
  • 1,404 ft²
192 Cypress Drive, Mastic Beach, NY, 11951 Listing by Amy Schuler

Rentals Near You

Click here to view more rentals in the neighborhood.
OneKey

Last Updated: 6 months ago
Data Source: OneKey MLS

Frequently Asked Questions

When was property at 137 Riverside Avenue built and last sold?
The property at 137 Riverside Avenue was built in and last sold on Jan 1, 1970 for $0.
How much is this home worth?
The estimated value of the home located at 137 Riverside Avenue is $0.
What are some comparable homes to 137 Riverside Avenue?
There are currently no comparable homes to 137 Riverside Avenue.
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