Pending

$699,999

Est. $4,804/mo —

•

2,150

sq ft

142 Riverside Ave, Mastic Beach, NY 11951

About this home

Discover classic Colonial elegance combined with comfortable, modern living in this spacious 4-bedroom, 3-bath 1-attached garage and 1- stand free garage home with a full basement set on more than a half-acre of beautifully landscaped grounds. Inside, enjoy bright, well-proportioned rooms filled with natural light and timeless architectural details. The layout flows easily from formal to casual spaces, making everyday living and hosting effortless. Three full baths add convenience and comfort. Outside is a true private retreat: a resort-style backyard with mature plantings, manicured lawns, and multiple areas for dining, relaxing, and play. Whether you envision summer pool parties, quiet morning coffee, or large outdoor gatherings, this yard delivers. The generous lot also offers room for additions, a garden, or recreational amenities. Don’t miss this rare opportunity to own a home that blends traditional charm, adaptable living space, and an exceptional outdoor environment.

Single-familyProperty Type

1974Year Built

0.55 acresLot Size

$326Price/Sq.Ft.

2 car garageParking

Listing by George Gabriel • Coldwell Banker American Homes

Listing by Rosann Romanelli • Coldwell Banker American Homes

Contact: 631-588-9090

Listing updated: Jun 19, 2026 at 08:55am

Redfin checked: 3 minutes ago

•Source:OneKey® MLS as Distributed by MLS Grid #1009138

Payment calculator

$4,804 per month

Principal and interest$3,679

Property taxes

$922

HOA dues

Home insurance

$204

Utilities

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Open houses

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Nearby open houses (10)

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4 beds2 baths1,944 sq ft
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3 beds2.5 baths1,521 sq ft
11 Burgoyne Ct, Coram, NY 11727
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2 beds1 bath1,485 sq ft
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Listing by Dean Michael Realty Corp
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3 beds1 bath950 sq ft
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Listing by Douglas Elliman Real Estate
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4 beds2.5 baths2,240 sq ft
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Listing by Eric G Ramsay Jr Assoc LLC
OPEN SAT, 12PM TO 2PM
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3 beds3 baths1,125 sq ft
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Listing by Professional RE of New York
OPEN SAT, 12PM TO 2PM
$767,000
5 beds3.5 baths1,848 sq ft
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Listing by ERealty Advisors Inc
OPEN SAT, 12PM TO 2PM
$269,999
1 bed1 bath836 sq ft
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Listing by Signature Premier Properties
OPEN SAT, 12:30PM TO 2:30PM
$465,000
3 beds2 baths1,000 sq ft
31 Brushwood Dr, Shirley, NY 11967
Listing by Keystone Realty USA Corp
OPEN SUN, 12PM TO 2PM
$499,999
3 beds2 baths1,408 sq ft
155 Moriches Ave, Mastic, NY 11950
Listing by Deepak Hemrajani Inc

Around this home

Schools

K - 12
Preschool & daycare

Tangier Smith Elementary School

Public K-5 • Assigned • 0.9mi

8/10

William Paca Middle School

Public 6-8 • Assigned • 0.9mi

5/10

William Floyd High School

Public 9-12 • Assigned • 0.5mi

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

142 Riverside Ave · $699,999

DAYS ON MARKET

The average home goes pending in 24 days.

SALE-TO-LIST

Most homes are selling 3% above list price.

LIST PRICE

Median sale price in this area is $744,942. (6% higher than this home)

PRICE DROP

16% 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
Entrance foyer
His and hers closets
Washer/dryer hookup
Finished basement
Crawl attic
Deck

Bathrooms
Three full bathrooms

Kitchen
Dishwasher
Range
Microwave
Refrigerator
Stainless steel appliances

Laundry & utility
Dryer
Washer/dryer hookup
Gas water heater

Flooring
Vinyl

Heating & cooling
Baseboard heating
Oil heating
Central air conditioning
Fireplace

Sale and tax history for 142 Riverside Ave

Sale History
Tax History

Year

Property tax

Land + Additions

Assessment*

2026

$10,353

$200 + $2,425

$2,625

2025

$10,353 (+2.3%)

$200 + $2,425

$2,625

2024

$10,120 (+5.5%)

$200 + $2,425

$2,625

2023

$9,589 (−12.0%)

$200 + $2,425

$2,625

2022

$10,897

$200 + $2,425

$2,625

2021

$10,897 (+0.9%)

$200 + $2,425

$2,625

2020

$10,803 (+2.0%)

$200 + $2,425

$2,625

2019

$10,593 (+2.5%)

$200 + $2,425

$2,625

2018

$10,333 (+1.8%)

$200 + $2,425

$2,625

2017

$10,149 (+8.0%)

$200 + $2,425

$2,625

2016

$9,399

$200 + $2,425

$2,625

Public record

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

0.55 Acres

Year renovated

—

Finished Sq. Ft.

—

Unfinished Sq. Ft.

—

Total Sq. Ft.

1,518

Year built

1974

Style

Single Family Residential

County

Suffolk County

APN

0200939000900017001

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 2026.

Climate risks

1/10 Flood Factor

Minimal risk 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

80/ 100

Very good sunlight

Sunscore

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

8.2 hrs

5 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 142 Riverside Ave

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

Nearby homes have recently sold between $440,000 and $660,000.

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $440K to $660K.

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
$25/sq ft
14 years newer
no basement
SOLD AUG 14, 2026
$525,000 Last sold price
5 beds2 baths1,776 sq ft
279 Beaver Dr, Mastic Beach, NY 11951
Listing by Floyd Harbor Real Estate Inc
$30/sq ft
smaller lot
2 years newer
SOLD JUL 1, 2026
$660,000 Last sold price
4 beds3 baths1,570 sq ft
47 Mayfield Dr, Mastic Beach, NY 11951
Listing by OverSouth LLC
$94/sq ft
smaller lot
1 year newer
SOLD FEB 6, 2026
$560,000 Last sold price
4 beds2 baths1,908 sq ft
218 Wavecrest Dr, Mastic Beach, NY 11951
Listing by Exit Realty Edge
$32/sq ft
smaller lot
1 year older
SOLD AUG 3, 2026
$440,000 Last sold price
3 beds2 baths1,296 sq ft
86 Eleanor Ave, Mastic, NY 11950
Listing by EXP Realty
$14/sq ft
16 years older
unfinished basement
SOLD APR 20, 2026
$570,000 Last sold price
3 beds1.5 baths1,272 sq ft
143 Hawthorne St, Mastic, NY 11950
Listing by Realty Connect USA LI
$122/sq ft
11 years older
unfinished basement

This home is pending

The seller has accepted an offer, and this property is now .

Have questions?

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Jessica Oelcher typically replies in about 13 minutes

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

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About this home

Payment calculator

Open houses

Nearby open houses (10)

Around this home

Schools

Market insights

Property details

Sale and tax history for 142 Riverside Ave

Public record

Climate risks

Historical weather

Sun exposure

Redfin Estimate for 142 Riverside Ave

This home is pending

Have questions?

Nearby similar homes

New listings for sale in 11951

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