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.
For sale
Price cut: $20K (3/12)
$565,000
17 Riverside Avenue, Mastic Beach, NY 11951
4beds
1,272sqft
Single Family Residence, Residential
Built in 1982
0.25 Acres Lot
$-- Zestimate®
$444/sqft
$-- HOA
What's special
Open floor planWell-designed in-law suite
- 50 days |
- 1,381 |
- 36 |
Zillow last checked: 7 hours ago
Listing updated: March 14, 2026 at 10:39am
Listing by:
Handsome Real Estate Inc 631-706-4002,
Karen Clark 631-678-5756
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 955567
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: $444/sqft
- Tax assessed value: $2,390
- Annual tax amount: $10,102
- Date on market: 1/26/2026
- Cumulative days on market: 51 days
- Listing agreement: Exclusive Right To Sell
- Electric utility on property: Yes
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 3/12/2026 | Price change | $565,000-3.4%$444/sqft |
Source:  OneKey® MLS as distributed by MLS GRID #955567 Report a problem | ||
| 1/26/2026 | Listed for sale | $585,000+67.2%$460/sqft |
Source: OneKey® MLS as distributed by MLS GRID #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 as distributed by MLS GRID #L2622803 Report a problem | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2017 | $10,648 | $2,390 |
| 2016 | -- | $2,390 |
| 2015 | -- | $2,390 |
| 2014 | -- | $2,390 |
| 2013 | -- | $2,390 |
| 2012 | -- | $2,390 -20.3% |
| 2011 | -- | $3,000 |
| 2010 | -- | $3,000 -6.3% |
| 2009 | -- | $3,200 |
| 2008 | -- | $3,200 |
| 2007 | $8,908 +26.5% | $3,200 |
| 2005 | $7,041 +5% | $3,200 |
| 2004 | $6,703 +6.2% | $3,200 |
| 2003 | $6,309 +6.9% | $3,200 |
| 2002 | $5,903 +6.6% | $3,200 |
| 2001 | $5,536 +3% | $3,200 |
| 2000 | $5,377 | $3,200 |
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.
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Neighborhood: 11951
Nearby schools
GreatSchools rating
- 5/10Nathaniel Woodhull Elementary SchoolGrades: K-5Distance: 1.2 mi
- 4/10William Floyd Middle SchoolGrades: 6-8Distance: 1.8 mi
- 3/10William Floyd High SchoolGrades: 9-12Distance: 1.1 mi
Schools provided by the listing agent
- Elementary: Nathaniel Woodhull Elementary School
- Middle: William Floyd Middle School
- High: William Floyd High School
Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
Local experts in 11951
- New York
- Suffolk County
- Mastic Beach
- 11951
- 17 Riverside Avenue
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