17 Riverside Avenue Mastic Beach, NY $ 585,000
17 Riverside Avenue
$ 585,000
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17 Riverside Avenue

Mastic Beach, NY, 11951
$ 585,000
Bedrooms4 Baths2.1 Sq 1,272

Monthly Estimate*

$ 3,602

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Single Family Home for sale in Mastic Beach, NY

for $585,000 with 4 bedrooms and 2 full baths, 1 half bath. This 1,272 square foot home was built in 1982 on a lot size of 0.25.

Come see this spacious 4-bedroom, 2.5-bath waterfront home featuring an open floor plan where you can enjoy breathtaking sunrise views over the water. The property offers a large private bulkhead capable of accommodating up to three boats, making it ideal for boating and waterfront living. This home also includes a well-designed in-law suite, offering flexibility and additional living space. Conveniently located near William Floyd Parkway and Montauk Highway, providing easy access to shopping, dining, and major commuter routes. Enjoy close proximity to local outdoor attractions, including Smith Point County Park, Mastic Beach Conservancy, and the scenic trails and wildlife at Wertheim National Wildlife Refuge. A rare opportunity to own a waterfront home with boating access, nearby beaches, and convenient transportation.

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Single Family Active

Price

$ 585,000

Bedrooms

4

Full Bath

2

Half Bath

1

Property Type

Single Family

Taxes

$ 10,102

Style

Raised Ranch

Lot Size

0.25

Year Built

1982

Town/City

Mastic Beach

County/Region

Suffolk

MLS | Web ID

955567

Features
Interior
Interior Amenities Cathedral Ceiling(s) Ceiling Fan(s) Eat-in Kitchen Formal Dining High Ceilings Open Floorplan Recessed Lighting Tray Ceiling(s)
Basement (Y/N) N
Fireplace Y/N Y
Half Baths 1
Total Bedrooms 4
Total Baths 3
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General
Sewer Cesspool
Heating Baseboard
Cooling Wall/Window Unit(s)
Utilities Cable Connected Electricity Connected Water Connected
Appliances Dishwasher Dryer Electric Range Refrigerator Stainless Steel Appliance(s)
Architectural Style Raised Ranch
Construction Materials Shingle Siding
Year Built 1982
Property Subtype Single Family Residence
Tax Year 2025
Parcel Number 0200-940-00-05-00-023-000
Waterfront Features Bulkhead
County Suffolk County
Property Type Residential
HOA N
Garage Y/N N
Total Rooms 12
Full Baths 2
High School William Floyd High School
City Brookhaven
Senior Community Y/N N
High School District William Floyd
Carport Y/N N
Elementary School Nathaniel Woodhull Elementary School
Property Attached Y/N N
Tax Annual Amount 10102.69
Middle/Junior High School William Floyd Middle School
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District William Floyd
Elementary School District William Floyd
Tax Assessed Value 2390
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Exterior
Parking Features Driveway Driveway
Water Source Public
Building Area Total 1272
Waterfront Y/N Y
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Internal Only
Street Number 1 17
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* Excluded Features
List By
Karen Clark

Listing Agent

Handsome Real Estate Inc

Broker

karen.clark@handsomere.com

Email

Affordability Calculator

$4,444
Per Month
81%
19%
0%
Monthly Principal & Interest
$3,602
Monthly Property Taxes
$842
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4099900 Elementary School
4100160 Middle School
William Floyd High School High School
Pricing History
DatePricePrice ChangeDescription
1/27/2026$585,000 Listed Price

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17 Riverside Avenue, Mastic Beach, NY, 11951 is a Single Family Home for sale at $585,000 with 1,272 sqft and a lot size of 0.25. 17 Riverside Avenue has 4 bedrooms, 2.1 baths, and was built in 1982. The property's zip code is 11951 which is in Mastic Beach, NY