For sale

$499,000

Est. $3,335/mo —

•

1,301

sq ft

11 Knapp Rd, Mastic Beach, NY 11951

About this home

Single-familyProperty Type

1955Year Built

10,019 sq ftLot Size

$384Price/Sq.Ft.

Listing by Kimberley Affrunti • BH&G R E Realty Connect

Contact: 631-599-4047

Listing updated: Aug 26, 2026 at 09:29am

Redfin checked: 2 minutes ago

•Source:OneKey® MLS as Distributed by MLS Grid #1041332

Payment calculator

$3,335 per month

Principal and interest$2,589

Property taxes

$621

HOA dues

Home insurance

$125

Utilities

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Open houses

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Around this home

Schools

K - 12
Preschool & daycare

Tangier Smith Elementary School

Public K-5 • Assigned • 0.7mi

8/10

William Paca Middle School

Public 6-8 • Assigned • 0.7mi

5/10

William Floyd High School

Public 9-12 • Assigned • 1.0mi

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

11 Knapp Rd · $499,000

Strong offer

$540K and above

75% chance or better to win

Why $540K+ is a strong offer

DAYS ON MARKET

The average home goes pending in 24 days.

SALE-TO-LIST

Most homes are selling 3% above list price.

About offer insights

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Interior features
Cathedral ceilings
Chef's kitchen
Crown molding
Eat-in kitchen
Formal dining
Quartz/Quartzite counters
Recessed lighting

Bedrooms
One-level home

Bathrooms
1 full bathroom

Kitchen
Stainless steel appliances
Chef's kitchen
Eat-in and formal dining options
Quartz/Quartzite countertops

Heating & cooling
Oil heating
No central cooling

Sale and tax history for 11 Knapp Rd

Sale History
Tax History

Date

Event

Price

OneKey® MLS as Distributed by MLS Grid #1041332

Aug 20, 2026

Listed

$499,000

$384/sq ft

Public Records

Nov 7, 2022

Sold

$389,000

$299/sq ft

OneKey® MLS as Distributed by MLS Grid #L3396203

Aug 3, 2022

Sold

$369,000

$284/sq ft

Jun 7, 2022

Pending

—

May 17, 2022

Price Changed

$369,000

$284/sq ft

May 3, 2022

Listed

$399,000

$307/sq ft

Public Records

Aug 10, 2021

Sold

$274,000

$211/sq ft

Public Records

Oct 18, 2017

Sold

$72,000

$55/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$7,455

$200 + $1,500

$1,700

2025

$7,455 (+1.1%)

$200 + $1,500

$1,700

2024

$7,371 (+4.3%)

$200 + $1,500

$1,700

2023

$7,070 (−12.7%)

$200 + $1,500

$1,700

2022

$8,102

$200 + $1,500

$1,700

2021

$8,102 (−0.3%)

$200 + $1,500

$1,700

2020

$8,130 (+1.8%)

$200 + $1,500

$1,700

2019

$7,988 (+3.0%)

$200 + $1,500

$1,700

2018

$7,751 (+28.0%)

$200 + $1,500

$1,700

2017

$6,057 (+11.0%)

$200 + $1,500

$1,700

2016

$5,455

$200 + $1,500

$1,700

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.

1,301

Year built

1955

Style

Single Family Residential

County

Suffolk County

APN

0200978900900063000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 21, 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

86/ 100

Very good sunlight

Sunscore

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

9 hrs

5.7 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 11 Knapp Rd

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

Nearby homes have recently sold between $470,000 and $560,000.

Nearby comparable homes

The Redfin Estimate uses 4 recent nearby sales, priced between $470K to $560K.

SOLD JUN 29, 2026
$548,000 Last sold price
3 beds2 baths1,112 sq ft
136 Magnolia Dr, Mastic Beach, NY 11951
Listing by C A Global Realty Inc
$109/sq ft
smaller lot
65 years newer
SOLD JUL 10, 2026
$560,000 Last sold price
3 beds1.5 baths1,440 sq ft
80 Queen Rd, Mastic Beach, NY 11951
Listing by Coldwell Banker M&D Good Life
$5/sq ft
39 years newer
SOLD JUN 1, 2026
$525,000 Last sold price
3 beds2 baths991 sq ft
152 Dogwood Rd, Mastic Beach, NY 11951
Listing by Premium Group Realty Corp
$146/sq ft
18 years newer
SOLD FEB 27, 2026
$470,000 Last sold price
4 beds2 baths1,470 sq ft
6 Victoria Pl, Mastic Beach, NY 11951
Listing by Premium Group Realty Corp
$64/sq ft
1 year older

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