OPEN SUN, 1PM TO 3PM

For sale

$699,999

Est. $4,793/mo —

•

2,364

sq ft

15 Riverside Ave, Mastic Beach, NY 11951

About this home

Breathtaking waterfront views and peaceful sunsets set the stage for this updated 4 Bedroom, 2.5 Bath Hi-Ranch on Poospatuck Creek, with direct access to the bay. The first level features updated flooring, Led lighting, summer kitchen, spacious living room, bedroom, ample storage and sliders to the deck- an ideal setup for mom, returning children, or guests Upstairs, Cathedral ceilings and hardwood floors create a bright and open feel. This Main level offers two generously sized bedrooms, and a spacious primary with walk in closet and half bath.The remodeled kitchen features quartz countertops, while the living room with fireplace and an oversized picture window showcases the yard and water views. Sliders lead to the upper deck, the perfect place to relax, unwind and savor those spectacular sunsets. Outside the home shines while you enjoy your private dock and a place to launch kayaks and paddleboat. From Poospatuck head to the bay for a day of fishing or simply enjoying life on the water. NEW : 2025/2026 Trex decking on Upper and Lower Level, New Oil tank, New Gutters And Gutter guards

Single-familyProperty Type

1988Year Built

0.25 acresLot Size

$296Price/Sq.Ft.

2 car garageParking

Listing by Maralyn Diggin • Douglas Elliman Real Estate

Contact: 516-681-2600

Listing updated: Oct 13, 2026 at 02:14pm

Redfin checked: a minute ago

•Source:OneKey® MLS as Distributed by MLS Grid #1059003

Payment calculator

$4,793 per month

Principal and interest$3,916

Property taxes

$708

HOA dues

Home insurance

$169

Utilities

Add

5 minutes to get started. No credit impact.

Affordability tools

See this home in person

Open houses

Sunday, Oct 18

1:00pm - 3:00pm

Nearby open houses (10)

OPEN SAT TO 4PM
$169,999
2 beds1.5 baths1,138 sq ft
205 Village Cir W, Manorville, NY 11949
Listing by Dream Select Realty Corp
OPEN SAT, 11AM TO 1PM
$560,000
2 beds2.5 baths1,657 sq ft
901 Pepperidge Lake Rd, Eastport, NY 11941
Listing by OverSouth LLC
OPEN SAT, 11:30AM TO 1:30PM
$459,000
3 beds1 bath1,050 sq ft
109 Dogwood Rd, Mastic Beach, NY 11951
Listing by Shine Realty Group
OPEN SAT, 12PM TO 2PM
$600,000
3 beds2 baths1,200 sq ft
29 Dana Ave, Mastic, NY 11950
Listing by Premium Group Realty Corp
OPEN SAT, 12PM TO 2PM
$719,000
3 beds2.5 baths1,456 sq ft
50 Timber Ridge Dr, Coram, NY 11727
Listing by Coldwell Banker American Homes
OPEN SAT, 12:30PM TO 2PM
$649,999
3 beds2.5 baths2,031 sq ft
210 Kettles Ln, Medford, NY 11763
Listing by Long Island Home Prop LLC
OPEN SAT, 1PM TO 3PM
$599,999
4 beds3.5 baths2,718 sq ft
64 Babylon St, Mastic, NY 11950
Listing by BH&G R E Realty Connect
OPEN SUN, 11:30AM TO 1:30PM
$575,000
3 beds2.5 baths2,322 sq ft
33 Perri Cir, Middle Island, NY 11953
Listing by RE/MAX Signature Real Estate
OPEN SUN, 12PM TO 3PM
$424,997
2 beds1.5 baths1,133 sq ft
133 Fieldstone Ct, Middle Island, NY 11953
Listing by BERKSHIRE HATHAWAY
OPEN OCT 24, 12PM TO 2PM
$550,000
4 beds1 bath1,318 sq ft
7 Centerview Trl, Ridge, NY 11961
Listing by Pinpoint Realty LI

Around this home

Schools

K - 12
Preschool & daycare

Tangier Smith Elementary School

Public K-5 • Assigned • 1.3mi

8/10

William Paca Middle School

Public 6-8 • Assigned • 1.4mi

5/10

William Floyd High School

Public 9-12 • Assigned • 1.1mi

3/10

Provided by GreatSchools

About Long

Island

Long Island, located between New York Harbor and the Atlantic Ocean, is a coastal and suburban New York neighborhood with barrier beaches and commuter rail hubs. The neighborhood’s energy concentrates around the Jamaica Station complex, where LIRR platforms, bus bays, and street-level storefronts create a constant current of movement. Housing shifts from compact prewar village centers to postwar capes and split-levels, with marinas and bayfront parks shaping daily routines. Jones Beach State Park and the Long Island Aquarium serve as signature day-trip anchors. The Paramount in Huntington and the Nassau County Museum of Art add a cultural throughline beyond the shoreline. Farm stands, delis, and small main streets stitch together a landscape defined by parkways, dunes, and bays.

Provided by Walk Score and Local Logic

Market insights

15 Riverside Ave · $699,999

DAYS ON MARKET

The average home goes pending in 31 days.

SALE-TO-LIST

Most homes are selling 2% above list price.

LIST PRICE

Median sale price in this area is $733,483. (5% higher than this home)

PRICE DROP

15% of homes in this area have had a price drop in the past month.

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Dining

Interior features
8 rooms
First-floor bedroom
First-floor full bathroom
Attic: See Remarks

Bathrooms
2 full bathrooms
1 half bathroom

Kitchen
Dishwasher
Refrigerator

Flooring
Combination flooring
Hardwood flooring

Heating & cooling
Oil heating
Central air

Sale and tax history for 15 Riverside Ave

Sale History
Tax History

Date

Event

Price

OneKey® MLS as Distributed by MLS Grid #1059003

Oct 8, 2026

Listed

$699,999

$296/sq ft

Public Records

Jul 2, 2024

Sold

$620,000

$262/sq ft

OneKey® MLS as Distributed by MLS Grid #L3535801

May 24, 2024

Sold

$629,000

$266/sq ft

Mar 22, 2024

Pending

—

Mar 20, 2024

Relisted

—

Mar 9, 2024

Listed

$629,000

$266/sq ft

Mar 5, 2024

Coming Soon

$629,000

$266/sq ft

Waterfront Views & Peaceful Sunsets are Completely Breathtaking in this Updated Hi-Ranch. This 4 Bed, 2.5 Bath Home Has So Much to Offer! 1st Level is Completely Updated. Brand New Floors, LED Lights, Brand New Summer Kitchen, Living Rm, & Bedroom. Great Space for Mom or In-Laws! Lots of Storage & Sliders Leading to the Beautiful Deck & Backyard. 2nd Level Boasts Cathedral Ceilings, 2 Lrg Bedrooms, & 1 Lrg Primary w/Walk In Closet & a Half Bath, a Remodeled Kitchen W/Quartz Counters, Livingroom W/Fireplace Beautiful Picture Window Overlooking the Entire Back Yard and Water, Sliders Leading to the Upper Deck. Refinished Hardwood Floors Throughout. Brand New Huge 80-Gal Water Heater Tank Installed! 300 Total Amps of Service & the House has a 9Ft Elevation Certificate-which makes Flood Insurance Affordably Around $1800/Yr! All Overlooking the Fenced Backyard W/a Lock for Safety. Your Own Private Dock for a Motorized Boat of Most Sizes, & a Private Kayak/Paddleboard/Small Rowboat Ramp. All on Poospatuck Creek which Leads Right out to the Bay for Some Tubing, Fishing, & Relaxing! Just Minutes Away from Smiths Point Beach, Parks, Wineries, & Everything the East End Has to Offer., Additional information: Appearance:Diamond,Interior Features:Lr/Dr,Separate Hotwater Heater:YES

Public Records

Dec 13, 2022

Sold

$470,000

$199/sq ft

OneKey® MLS as Distributed by MLS Grid #L3416490

Oct 28, 2022

Sold

$470,000

$199/sq ft

Aug 25, 2022

Pending

—

Aug 20, 2022

Listing Removed

—

Aug 5, 2022

Price Changed

$459,000

$194/sq ft

Jul 15, 2022

Listed

$499,000

$211/sq ft

Waterfront 4 bedroom, 2 1/2 bath home with low taxes, central air, room for Mom, 2 car garage, with too many special features to list! Located on the Creek leading right into the Forge River. Spectacular sunsets from the privacy of your own backyard. Pull your boat up for lunch after a peaceful morning on the water... just delightful!! Taxes WITH star are verified at $8034.98.Please note survey shows @9 foot elevation of first floor!!, Additional information: Appearance:Mint,Green Features:Insulated Doors,Interior Features:Lr/Dr

OneKey® MLS as Distributed by MLS Grid #L2673463

May 9, 2015

Listing Removed

—

May 16, 2014

Listed

$365,000

$154/sq ft

Public Records

Nov 13, 1987

Sold

$80,000

$34/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$8,497

$150 + $1,845

$1,995

2025

$8,497 (+1.4%)

$150 + $1,845

$1,995

2024

$8,382 (+4.2%)

$150 + $1,845

$1,995

2023

$8,042 (−13.7%)

$150 + $1,845

$1,995

2022

$9,318

$150 + $1,845

$1,995

2021

$9,318 (+0.5%)

$150 + $1,845

$1,995

2020

$9,272 (+1.5%)

$150 + $1,845

$1,995

2019

$9,137 (+19.9%)

$150 + $1,845

$1,995

2018

$7,618 (+1.8%)

$150 + $1,845

$1,995

2017

$7,484 (+9.5%)

$150 + $1,845

$1,995

2016

$6,837

$150 + $1,845

$1,995

Public record

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

0.25 Acres

Year renovated

—

Finished Sq. Ft.

—

Unfinished Sq. Ft.

—

Total Sq. Ft.

2,364

Year built

1988

Style

Single Family Residential

County

Suffolk County

APN

0200940000500024000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 2026.

Climate risks

7/10 Flood Factor

Estimated 54-66% chance of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.31% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 91° expected this year, 19 days in 30 years

8/10 Wind Factor

80% chance of strong winds in next 30 years

4/10 Air Factor

3 unhealthy days expected this year, 5 days in 30 years

Provided by First Street

Historical weather

Mastic Beach, NY • 11951

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

72/ 100

Good sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

8.6 hrs

4.7 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 15 Riverside Ave

We cannot show automated home-value estimates for this home.

Nearby homes have recently sold between $435,000 and $750,000.

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $435K to $750K.

SOLD AUG 11, 2026
$710,000 Last sold price
4 beds1.5 baths1,681 sq ft
15 Mallard Dr, Center Moriches, NY 11934
Listing by Gateway to The Hamptons R E
$126/sq ft
smaller lot
28 years older
SOLD JUL 7, 2026
$610,000 Last sold price
4 beds3 baths1,715 sq ft
159 Main Ave, Mastic, NY 11950
Listing by Oasis Realty Group LLC
$60/sq ft
smaller lot
19 years newer
SOLD JUN 10, 2026
$435,000 Last sold price
5 beds2 baths2,472 sq ft
78 Eleanor Ave, Mastic, NY 11950
Listing by EXP Realty
$120/sq ft
3 years older
SOLD AUG 21, 2026
$750,000 Last sold price
4 beds2 baths1,946 sq ft
46 Hewitt Blvd, Center Moriches, NY 11934
Listing by Coldwell Banker M&D Good Life
$89/sq ft
larger lot
15 years older
SOLD JUL 20, 2026
$620,000 Last sold price
4 beds2 baths1,764 sq ft
191 Hawthorne St, Mastic, NY 11950
Listing by Daniel Gale Sothebys Intl Rlty
$55/sq ft
larger lot
SOLD OCT 29, 2025
$670,000 Last sold price
4 beds3 baths2,000 sq ft
26 Coventry Ave, Mastic, NY 11950
Listing by Signature Premier Properties
$39/sq ft
37 years newer
basement

Tour for free, no strings attached

Make a winning offer with the help of a local agent

Ask a question

(631) 502-5196

Early Access listings

EARLY ACCESSCOMPASS COMING SOON

$2,495,000

4 beds4 baths3,622 sq ft

16 Manor Ln, East Hampton, NY 11937

EARLY ACCESSCOMPASS COMING SOON

$1,795,000

3 beds4 baths1,400 sq ft

182 Three Mile Harbor Hog Creek Rd, East Hampton, NY 11937

EARLY ACCESSCOMPASS COMING SOON

$2,125,000

3 beds2 baths1,626 sq ft

31 Widener Ln, Southampton, NY 11968

Nearby similar homes

OPEN SAT, 1PM TO 3PM

$599,999

4 beds3.5 baths2,718 sq ft

64 Babylon St, Mastic, NY 11950

Listing by BH&G R E Realty Connect

$579,900

4 beds2 baths1,004 sq ft

11 Mayfield Dr, Mastic Beach, NY 11951

Listing by Shoreline Real Estate Advisors

VIDEO TOUR

$2,250,000

3 beds3.5 baths2,450 sq ft

34 Old Neck Rd S, Center Moriches, NY 11934

Listing by Compass Greater NY LLC

$599,999

6 beds2 baths1,634 sq ft

64 Spar Dr, Mastic Beach, NY 11951

Listing by Signature Premier Properties

$499,000

2 beds1 bath1,084 sq ft

76 Riviera Dr, Mastic, NY 11950

Listing by Daniel Gale Sothebys Intl Rlty

$475,000

2 beds1 bath1,069 sq ft

122 Church Dr, Mastic Beach, NY 11951

Listing by Alexander Madison Realty Inc

New listings for sale in 11951

OPEN SUN, 1PM TO 3PM

$699,999

4 beds2.5 baths2,364 sq ft

15 Riverside Ave, Mastic Beach, NY 11951

Listing by Douglas Elliman Real Estate

OPEN SAT, 11:30AM TO 1:30PM

$459,000

3 beds1 bath1,050 sq ft

109 Dogwood Rd, Mastic Beach, NY 11951

Listing by Shine Realty Group

COMING SOON

$399,999

2 beds1 bath696 sq ft

207 Laurelton Dr, Mastic Beach, NY 11951

Listing by Signature Premier Properties

COMING SOON

$429,000

3 beds1 bath1,040 sq ft

156 Orchid Dr, Mastic Beach, NY 11951

Listing by BH&G R E Realty Connect

$369,999

2 beds1 bath1,078 sq ft

23 Whittier Dr, Mastic Beach, NY 11951

Listing by RE/MAX Signature Real Estate

$399,990

4 beds2 baths1,384 sq ft

12 W Narcissus Rd, Mastic Beach, NY 11951

Listing by Your Team D&G Realty Ltd

$429,990

5 beds2 baths1,342 sq ft

77 Dahlia Dr, Mastic Beach, NY 11951

Listing by Your Team D&G Realty Ltd

$389,999

2 beds1 bath600 sq ft

60 Huguenot Dr, Mastic Beach, NY 11951

Listing by Exit Realty All Pro

$369,990

2 beds1 bath756 sq ft

251 Jefferson Dr, Mastic Beach, NY 11951

Listing by Your Team D&G Realty Ltd

Details provided by OneKey® MLS as Distributed by MLS Grid and may not match the public record. Learn more.

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

Houses for rent in Mastic Beach	Agents near me	White Plains, NY homes for sale	Mastic Beach Housing Market
Houses for sale near me	New York, NY homes for sale	Yonkers, NY homes for sale
Land for sale near me	Manhattan, NY homes for sale	Scarsdale, NY homes for sale
Open Houses near me	Rochester, NY homes for sale	Mastic Beach Property Records
Condos for sale near me	Buffalo, NY homes for sale	NY New Listings

11967 homes for sale
11951 homes for sale
11770 homes for sale

Sayville homes for sale
Ronkonkoma homes for sale
Stony Brook homes for sale

About this home

Payment calculator

Affordability tools

See this home in person

Nearby open houses (10)

Around this home

Schools

Market insights

Property details

Sale and tax history for 15 Riverside Ave

Public record

Climate risks

Historical weather

Sun exposure

Redfin Estimate for 15 Riverside Ave

Early Access listings

Nearby similar homes

New listings for sale in 11951

More real estate resources