Off Market Jul 2024 for $577K

$680,899

Est. refi paymentEst. refi $4,353/mo

•

—

sq ft

21 Valley Rd, Stony Brook, NY 11790

About this home

Single-familyProperty Type

1960Year Built

9,148 sq ftLot Size

Listing by Jason Galka • Signature Premier Properties

Bought with Laura Applebaum • Century 21 AA Realty

Redfin checked: a few seconds ago

•Source:OneKey® MLS as Distributed by MLS Grid #L3552920

Redfin Estimate

$680,899

$103K since sold in July 2024$8,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 17.6% lower than the average sale price ($827K) of 6 comparable homes.

SOLD JUN 26, 2026
$780,000
A
3 beds2 baths1,586 sq ft
6 Huyler Rd, Setauket, NY 11733
Listing by Coldwell Banker American Homes
SOLD JUL 20, 2026
$800,000
B
4 beds2 baths1,650 sq ft
16 Valley Rd, Stony Brook, NY 11790
Listing by Howard Hanna Coach
SOLD MAY 29, 2026
$996,000
C
3 beds2 baths1,921 sq ft
22 Woodfield Rd, Stony Brook, NY 11790
Listing by Daniel Gale Sothebys Intl Rlty
SOLD OCT 30, 2025
$675,000
D
3 beds2 baths1,300 sq ft
2 Maple Ave, Stony Brook, NY 11790
Listing by Realty Connect USA L I Inc
SOLD JUL 14, 2026
$1,050,000
E
3 beds3 baths2,200 sq ft
4 Knoll Top Rd, Stony Brook, NY 11790
Listing by Howard Hanna Coach
SOLD AUG 13, 2026
$660,000
F
4 beds2 baths1,778 sq ft
119 Christian Ave, Stony Brook, NY 11790
Listing by Keller Williams Realty Elite

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Earn from this home

Sell

$195,731

Est. take-home

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Est. cash available

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Rent

$2,825/mo

Redfin rental estimate

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Market trends in 11790, NY

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

106.4%

+2.6% MoM

Median sale price

$840K

$30K MoM

Avg. days on market

20d

3 days MoM

Recently sold homes

6 MoM

New listings for sale

$3,750,000
5 beds5.5 baths5,000 sq ft
11 Arbutus Ln, Stony Brook, NY 11790
Listing by Daniel Gale Sothebys Intl Rlty
$750,000
3 beds2 baths1,680 sq ft
15 Shore Oaks Dr, Stony Brook, NY 11790
Listing by Howard Hanna Coach
$849,000
4 beds2.5 baths2,100 sq ft
2 Mount Grey Rd, Stony Brook, NY 11790
Listing by Howard Hanna Coach
$1,449,900
5 beds4 baths2,657 sq ft
15 Night Heron Dr, Stony Brook, NY 11790
Listing by Aliano Real Estate
$699,999
4 beds1.5 baths— sq ft
29 Ivy League Ln, Stony Brook, NY 11790
Listing by Long Island Home Prop LLC
$949,000
4 beds2.5 baths3,100 sq ft
50 Glenridge Ave, Stony Brook, NY 11790
Listing by Douglas Elliman Real Estate
$575,000
4 beds2 baths2,300 sq ft
3 Maymont Ln, Stony Brook, NY 11790
Listing by RPB Realty
See all

Provided by Redfin

Sale history for 21 Valley Rd

Date

Event

Price

Public Records

Sep 3, 2024

Sold

$577,500

OneKey® MLS as Distributed by MLS Grid #L3552920

Jul 31, 2024

Sold

$577,500

Jun 8, 2024

Pending

—

May 20, 2024

Listed

$534,999

Public Records

Aug 5, 2016

Sold

$308,000

MLSLI #2822054

Apr 6, 2016

Pending

—

Mar 1, 2016

Price Changed

Jan 15, 2016

Listed

OneKey® MLS as Distributed by MLS Grid #L2822054

Jan 15, 2016

Listed

$319,900

Public Records

Nov 19, 2014

Sold

$290,000

MLSLI #2634194

Jul 24, 2014

Delisted

—

May 16, 2014

Price Changed

Apr 3, 2014

Price Changed

Dec 6, 2013

Listed

OneKey® MLS as Distributed by MLS Grid #L2634194

Dec 6, 2013

Listed

$349,900

OneKey® MLS as Distributed by MLS Grid #L2603506

Oct 31, 2013

Listing Removed

—

May 17, 2013

Listed

$369,900

OneKey® MLS as Distributed by MLS Grid #L2583626

Jul 30, 2013

Listing Removed

—

May 17, 2013

Listed

$399,000

Public Records

Oct 4, 2001

Sold

$242,000

** Price available after signing in.

Join or sign in to view all info

Year

Property tax

Land + Additions

Assessment*

2026

$13,594

$150 + $2,600

$2,750

2025

$13,594 (+3.7%)

$150 + $2,600

$2,750

2024

$13,103 (+7.1%)

$150 + $2,600

$2,750

2023

$12,237 (+3.5%)

$150 + $2,600

$2,750

2022

$11,822

$150 + $2,600

$2,750

2021

$11,822 (+1.1%)

$150 + $2,600

$2,750

2020

$11,690 (+2.8%)

$150 + $2,600

$2,750

2019

$11,370 (+2.7%)

$150 + $2,600

$2,750

2018

$11,071 (+2.2%)

$150 + $2,600

$2,750

2017

$10,834 (+1.9%)

$150 + $2,600

$2,750

2016

$10,633 (+24.5%)

$150 + $2,600

$2,750

2015

$8,540 (+2.2%)

$150 + $2,500

$2,650

2014

$8,354 (+3.1%)

$150 + $2,500

$2,650

2013

$8,099 (+2.5%)

$150 + $2,500

$2,650

2012

$7,905 (+4.5%)

$150 + $2,500

$2,650

2011

$7,566 (+2.3%)

$150 + $2,500

$2,650

2010

$7,395 (+5.8%)

$150 + $2,500

$2,650

2009

$6,990

$150 + $2,500

$2,650

Tax history for 21 Valley Rd

Year

Property tax

Land + Additions

Assessment*

2026

$13,594

$150 + $2,600

$2,750

2025

$13,594 (+3.7%)

$150 + $2,600

$2,750

2024

$13,103 (+7.1%)

$150 + $2,600

$2,750

2023

$12,237 (+3.5%)

$150 + $2,600

$2,750

2022

$11,822

$150 + $2,600

$2,750

2021

$11,822 (+1.1%)

$150 + $2,600

$2,750

2020

$11,690 (+2.8%)

$150 + $2,600

$2,750

2019

$11,370 (+2.7%)

$150 + $2,600

$2,750

2018

$11,071 (+2.2%)

$150 + $2,600

$2,750

2017

$10,834 (+1.9%)

$150 + $2,600

$2,750

2016

$10,633 (+24.5%)

$150 + $2,600

$2,750

2015

$8,540 (+2.2%)

$150 + $2,500

$2,650

2014

$8,354 (+3.1%)

$150 + $2,500

$2,650

2013

$8,099 (+2.5%)

$150 + $2,500

$2,650

2012

$7,905 (+4.5%)

$150 + $2,500

$2,650

2011

$7,566 (+2.3%)

$150 + $2,500

$2,650

2010

$7,395 (+5.8%)

$150 + $2,500

$2,650

2009

$6,990

$150 + $2,500

$2,650

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Beds

—

Baths

—

Stories

—

Lot width

—

Lot depth

—

Lot size

9,148 Sq. Ft.

Year renovated

—

Sq. Ft.

—

Year built

—

Style

Single Family Residential

County

Suffolk County

APN

0200174000100023000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 2026.

Property details

Parking

Parking Information
Parking Features: Attached, Private

Interior

Heating & Cooling
Cooling: None
Heating: Baseboard, Oil

Interior Features
Interior Features: Eat-in Kitchen,Master Downstairs

Room Information
Room Description: Large LR.||Spacious primary bedroom.||Additional Bedroom.||Full Bathroom on main level.||Eat in Kitchen||Bonus Room/Home Office Space.||Full Bathroom with Shower.||Additional Bedroom.||Rec Room/Additional LR||Newer Washer/Dryer
Basement YN: No
Attic: Pull Stairs
Rooms Total: 5
Basement: Finished
Additional Rooms: Home Office

Bathroom Information
Bathrooms Full: 2

Exterior

Exterior Features
Construction Materials: Brick, Frame, Shingle Siding

Lot Information
Lot Features: Near Public Transit, Near School, Near Shops

Property Information
Property Sub Type: Single Family Residence

Financial

Tax Information
Tax Section: 174
Tax Annual Amount: $12,237.11

Utilities

Utility Information
Sewer: Cesspool

Location

HOA Information
Association Amenities: Park

School Information
Middle Or Junior School: Paul J Gelinas Junior High School
High School: Ward Melville Senior High School
High School District: Three Village

Location Information
Hamlet: Stony Brook
Directions: 25A to Cedar, Right on to Valley Road. Use GPS.
County Or Parish: Suffolk County

Public facts

Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: 9,148 square feet
Style: Single Family Residential
Year Built: —
Year Renovated: —
County: Suffolk County
APN: 0200174000100023000

Home facts updated by county records on Aug 31, 2026

Around this home

Schools

Setauket Elementary School

Public PreK-6 • Assigned • 1.9mi

6/10

Paul J Gelinas Junior High School

Public 7-9 • Assigned • 1.2mi

7/10

Ward Melville Senior High School

Public 9-12 • Assigned • 3.3mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

5/10 Heat Factor

7 days above 95° expected this year, 16 days in 30 years

8/10 Wind Factor

80% chance of strong winds in next 30 years

4/10 Air Factor

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

Provided by First Street

Historical weather

Stony Brook, NY • 11790

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 8.8 hours in June and 4.5 hours in December, which is comparable to the U.S. average for solar exposure.

8.8 hrs

4.5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$647,000 – $784,000

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Home values near 21 Valley Rd

Data from public records.

Address	Redfin Estimate
6 Dale Road, Stony Brook, NY 2 Beds \| 1 Baths \| - Sq. Ft.	$607,036
78 Cedar Street, Stony Brook, NY - Beds \| - Baths \| - Sq. Ft.	$832,773

Address	Redfin Estimate
75 Cedar Street, Stony Brook, NY - Beds \| - Baths \| 731 Sq. Ft.	$521,154
22 Kemswick Drive, Stony Brook, NY 4 Beds \| 2.5 Baths \| - Sq. Ft.	$861,179

Address	Redfin Estimate
77 Cedar Street, Stony Brook, NY - Beds \| - Baths \| 1034 Sq. Ft.	$687,982
71 Cedar Street, Stony Brook, NY - Beds \| - Baths \| 1742 Sq. Ft.	$819,596

Property information provided by OneKey® MLS as Distributed by MLS Grid when last listed in 2024. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 11790, NY

Sale history for 21 Valley Rd

Tax history for 21 Valley Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 11790

Home values near 21 Valley Rd

More real estate resources