For sale

$585,000

17 Riverside Avenue, Mastic Beach, NY 11951

4beds

1,272sqft

Single Family Residence, Residential

Built in 1982

0.25 Acres Lot

$-- Zestimate^®

$460/sqft

$-- HOA

What's special

Open floor planWell-designed in-law suite

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.

8 days

1,051

47

Tour with a local agent

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 3
Full bathrooms: 2
1/2 bathrooms: 1

Heating

Baseboard

Cooling

Wall/Window Unit(s)

Appliances

Included: Dishwasher, Dryer, Electric Range, Refrigerator, Stainless Steel Appliance(s)

Features

Cathedral Ceiling(s), Ceiling Fan(s), Eat-in Kitchen, Formal Dining, Open Floorplan, Recessed Lighting, Tray Ceiling(s)
Attic: Pull Stairs
Has fireplace: Yes

Interior area

Total structure area: 1,272
Total interior livable area: 1,272 sqft

Property

Parking

Parking features: Driveway
Has uncovered spaces: Yes

Features

On waterfront: Yes
Waterfront features: Bulkhead

Lot

Size: 0.25 Acres

Details

Parcel number: 0200940000500023000
Special conditions: None

Construction

Type & style

Home type: SingleFamily
Property subtype: Single Family Residence, Residential

Materials

Shingle Siding

Condition

Year built: 1982

Utilities & green energy

Sewer: Cesspool
Water: Public
Utilities for property: Cable Connected, Electricity Connected, Water Connected

Community & HOA

HOA

Has HOA: No

Location

Region: Mastic Beach

Financial & listing details

Price per square foot: $460/sqft
Tax assessed value: $2,390
Annual tax amount: $10,102
Date on market: 1/26/2026
Cumulative days on market: 9 days
Listing agreement: Exclusive Right To Sell
Electric utility on property: Yes

Estimated market value

Not available

Estimated sales range

Not available

Price history

Date	Event	Price
1/26/2026	Listed for sale	$585,000+67.2%$460/sqft
Source: OneKey® MLS #955567 Report a problem
8/1/2018	Listing removed	$349,917$275/sqft
Source: Coldwell Banker M&D Good Life #2959231 Report a problem
2/7/2018	Listed for sale	$349,917+7.7%$275/sqft
Source: Coldwell Banker M&D Good Life #2959231 Report a problem
7/24/2014	Sold	$325,000$256/sqft
Source: OneKey® MLS #L2622803 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2017	$10,648	$2,390
2016	--	$2,390
2015	--	$2,390

Find assessor info on the county website

BuyAbility℠ payment

Estimated monthly payment

All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

See how much you could borrow to make a competitive offer.

Get pre-qualified