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137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
137 Riverside Avenue, Mastic Beach NY 11951
New York>Suffolk County>Mastic

137 Riverside AvenueMastic Beach, NY 11951

For Sale

$450,000

Smart Buyer Rebate - Ask

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

Listed by Rachel A. Hujber

·

Signature Homes of New York

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631-909-7200

Last updated February 21, 2026

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Source: OneKey #959543

Listing Facts

  • TypeSingle-family
  • NeighborhoodMastic
  • Bedrooms3
  • Bathrooms1
  • Days on Prevu32
  • Taxes$6,260.26/year
  • Size1,161 sqft
  • Price per sqft$388

Amenities

  • Dishwasher
  • Washer/Dryer
  • Parking

Location

Mortgage Calculator

Listing History

02/12/2026
Status changed to Active
$450,000
02/12/2026
Listed by Signature Homes of New York
$450,000

Property Details for 137 Riverside Avenue

Exterior

Construction

  • Year Built: 1974
  • Architectural Style: Ranch
  • Construction Materials: Frame

Features

  • Waterfront Features: Creek
  • Waterfront: Yes

Measurements

  • Building Area Total: 1,161
  • Building Area Units: Square Feet
  • Lot Size Acres: 0.33
  • Lot Size Square Feet: 14,375

Financial

Taxes

  • Parcel Number: 0200-939-00-07-00-016-000
  • Tax Annual Amount: $6,260.26
  • Tax Assessed Value: $1,660.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Dishwasher, Dryer, Electric Oven, Refrigerator, Washer
  • Flooring: Hardwood
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Eat-in Kitchen, Primary Bathroom

Measurements

  • Living Area: 1,161
  • Living Area Source: Public Records

Rooms

  • Bathrooms Full: 1
  • Bathrooms Total Integer: 1
  • Bedrooms Total: 3
  • Rooms Total: 5

Parking

Parking

  • Garage Spaces: 1
  • Garage: Yes
  • Parking Features: Driveway, Garage

Schools

Elementary School

  • Elementary School: William Floyd Elementary School
  • Elementary School District: William Floyd

High School

  • High School: William Floyd High School
  • High School District: William Floyd

Middle or Junior School

  • Middle Or Junior School: William Floyd Middle School
  • Middle Or Junior School District: William Floyd

Utilities

Equipment

  • Heating: Oil
  • Laundry Features: Electric Dryer Hookup, Washer Hookup
  • Sewer: Cesspool
  • Utilities: Cable Available, Electricity Connected, Phone Available, Trash Collection Public, Water Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 3 bedrooms and 1 bathroom in this single-family home at 137 Riverside Avenue.

What schools are nearby to 137 Riverside Avenue?

Nearby schools include the William Floyd Elementary School, William Floyd Middle School, and William Floyd High School.

Does this single-family home have parking?

Yes, there is 1 parking space available for 137 Riverside Avenue.

What are the annual taxes for 137 Riverside Avenue?

Annual taxes for this single-family home are estimated at $6,260.

How does 137 Riverside Avenue compare to other single-family homes in Mastic?

This single-family home is listed 12% below the average price for single-family homes in Mastic and has been on the market for 63 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 1,161 sqft.

137 Riverside Avenue is a 3-bedroom, 1-bath single-family home for sale in Mastic Beach NY 11951. On Prevu for 32 days at $450,000. This residence features 1,161 square feet of living space, located in Mastic. The median listing price for single-family homes in this area is $499,990. Nearby schools include William Floyd Elementary School, William Floyd Middle School, and William Floyd High School. Additional amenities include dishwasher, parking, and washer/dryer. Browse more single-family home listings in Suffolk County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.