For sale

$539,000

Est. $3,753/mo —

•

1,403

sq ft

21 Astoria Rd, Mastic Beach, NY 11951

About this home

Single-familyProperty Type

1975Year Built

10,019 sq ftLot Size

$384Price/Sq.Ft.

2 car garageParking

Listing by Diana Lopez • Nexx Homes Realty Inc

Listing updated: Oct 10, 2026 at 03:10pm

Redfin checked: a few seconds ago

•Source:OneKey® MLS as Distributed by MLS Grid #1048803

Payment calculator

$3,753 per month

Principal and interest$3,015

Property taxes

$607

HOA dues

Home insurance

$130

Utilities

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Open houses

No upcoming open houses.

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Around this home

Schools

K - 12
Preschool & daycare

John S Hobart Elementary School

Public K-5 • Assigned • 2.3mi

7/10

William Paca Middle School

Public 6-8 • Assigned • 1.7mi

5/10

William Floyd High School

Public 9-12 • Assigned • 2.0mi

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

Offer insights

21 Astoria Rd · $539,000

Strong offer

$543K and above

75% chance or better to win

Why $543K+ is a strong offer

DAYS ON MARKET

The average home goes pending in 31 days.

SALE-TO-LIST

Most homes are selling 2% above list price.

About offer insights

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Interior features
Eat-in kitchen
Stainless steel appliances

Bedrooms
5 rooms total

Bathrooms
1 full bathroom

Kitchen
Stainless steel appliances
Eat-in kitchen

Heating & cooling
Central air conditioning
Electric heating

Sale and tax history for 21 Astoria Rd

Sale History
Tax History

Date

Event

Price

OneKey® MLS as Distributed by MLS Grid #1048803

Sep 24, 2026

Price Changed

$539,000

$384/sq ft

Sep 10, 2026

Listed

$559,000

$398/sq ft

OneKey® MLS as Distributed by MLS Grid #938523

Nov 29, 2025

Pending

—

Nov 24, 2025

Listed

$259,999

$185/sq ft

OneKey® MLS as Distributed by MLS Grid #936493

Nov 24, 2025

Listing Removed

—

Nov 17, 2025

Listed

$259,999

$185/sq ft

OneKey® MLS as Distributed by MLS Grid #934518

Nov 17, 2025

Listing Removed

—

Nov 11, 2025

Listed

$269,999

$192/sq ft

OneKey® MLS as Distributed by MLS Grid #930483

Nov 11, 2025

Listing Removed

—

Nov 6, 2025

Listed

$279,999

$200/sq ft

Public Records

Dec 9, 2003

Sold

$185,500

$132/sq ft

Public Records

Aug 7, 1997

Sold

$68,000

$48/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$7,289

$200 + $1,460

$1,660

2025

$7,289 (+1.1%)

$200 + $1,460

$1,660

2024

$7,207 (+4.3%)

$200 + $1,460

$1,660

2023

$6,913 (+3.5%)

$200 + $1,460

$1,660

2022

$6,676

$200 + $1,460

$1,660

2021

$6,676 (+1.7%)

$200 + $1,460

$1,660

2020

$6,567 (+2.1%)

$200 + $1,460

$1,660

2019

$6,435 (+3.0%)

$200 + $1,460

$1,660

2018

$6,249 (+3.0%)

$200 + $1,460

$1,660

2017

$6,070 (+11.6%)

$200 + $1,460

$1,660

2016

$5,441

$200 + $1,460

$1,660

Public record

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

10,019 Sq. Ft.

Year renovated

—

Finished Sq. Ft.

—

Unfinished Sq. Ft.

—

Total Sq. Ft.

1,403

Year built

1975

Style

Single Family Residential

County

Suffolk County

APN

0200983401100030000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 16, 2026.

Climate risks

10/10 Flood Factor

Estimated 80%+ 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 92° expected this year, 20 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

94/ 100

Exceptional sunlight

Sunscore

This home ranks in the top 8% for direct sun exposure in Mastic Beach. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.9 hrs

6.2 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 21 Astoria Rd

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

Nearby homes have recently sold between $433,000 and $630,000.

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $433K to $630K.

SOLD SEP 4, 2026
$550,000 Last sold price
2 beds1.5 baths1,430 sq ft
13 Fairview Dr, Shirley, NY 11967
Listing by HomeSmart Premier Living Rlty
$1/sq ft
smaller lot
SOLD AUG 14, 2026
$433,000 Last sold price
2 beds1 bath1,224 sq ft
42 Moriches Dr, Mastic Beach, NY 11951
Listing by BERKSHIRE HATHAWAY
$30/sq ft
larger lot
38 years older
SOLD AUG 13, 2026
$550,000 Last sold price
3 beds1.5 baths1,091 sq ft
446 Riviera Dr, Mastic Beach, NY 11951
Listing by Pinpoint Realty LI
$120/sq ft
35 years older
basement
SOLD SEP 30, 2026
$500,000 Last sold price
3 beds2 baths1,198 sq ft
76 Huntington Dr, Mastic Beach, NY 11951
Listing by Signature Premier Properties
$33/sq ft
smaller lot
39 years older
SOLD SEP 25, 2026
$520,000 Last sold price
3 beds2 baths1,500 sq ft
510 Neighborhood Rd, Shirley, NY 11967
Listing by Coldwell Banker American Homes
$37/sq ft
smaller lot
51 years newer
SOLD SEP 21, 2026
$630,000 Last sold price
3 beds2 baths1,560 sq ft
147 Baybright Dr E, Shirley, NY 11967
Listing by Signature Premier Properties
$20/sq ft
larger lot
15 years older

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