21 Roslyn Ridge Rd, Mongaup Valley, NY 12762

Off market dec 2020 for $254K

$471,042

Est. refi paymentEst. refi $1,949/mo

•

1,648

sq ft

21 Roslyn Ridge Rd, Mongaup Valley, NY 12762

About this home

Plenty of natural light shines through this recently renovated contemporary home. Enter into the large living room with a fireplace, hardwood floors, large windows and access to the front deck. The nicely updated design of the kitchen is enhanced by a dining room with plenty of windows. Both rooms are just off the living room for ease of entertaining. The main floor features a master-suite, two additional bedrooms and a second full bath. The lower level is an unexpected surprise with a family room, full bath, kitchen and three additional rooms. The downstairs can be accessed from the main floor, or through its own private entrance off the driveway. The location of this home is perfect - close to 17B with easy access to different local towns, restaurants, lakes and entertainment. Additional Information: HeatingFuel:Oil Below Ground,ParkingFeatures:1 Car Attached,

Single-familyProperty Type

1991Year Built

1.96 acresLot Size

$286Est. Price/Sq.Ft.

1 spaceParking

Listing by Diane Silver • KW Hudson Valley United

Bought with Myrna Ginsberg • Myrna Ginsberg

Redfin checked: a minute ago

•Source:OneKey® MLS as Distributed by MLS Grid #H6064919

Redfin Estimate

$471,042

$216K since sold in December 2020$3,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 13.6% higher than the average sale price ($415K) of 6 comparable homes.

SOLD OCT 14, 2026
$314,150
A
3 beds3 baths1,456 sq ft
27 Gina Ln, Smallwood, NY 12778
Listing by Eagle Valley Realty
SOLD SEP 14, 2026
$462,000
B
3 beds2 baths1,464 sq ft
150 Hartwood Dr, Smallwood, NY 12778
Listing by Malek Properties
SOLD SEP 25, 2026
$422,000
C
3 beds2.5 baths2,093 sq ft
1 Decker Farm Rd, Monticello, NY 12701
Listing by KW Hudson Valley United
SOLD JUL 14, 2026
$445,000
D
3 beds2.5 baths1,681 sq ft
86 Atwell Ln, Monticello, NY 12701
Listing by KW Hudson Valley United
BOUGHT WITH REDFIN AUG 28, 2026
$645,000
E
3 beds2.5 baths2,279 sq ft
224 Lake Shore Dr, Monticello, NY 12701
Listing by Keller Williams Realty
SOLD SEP 2, 2026
$199,000
F
3 beds2 baths2,048 sq ft
3 Kehrley Ln, Swan Lake, NY 12783
Listing by Callicoon Real Estate LLC

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$261,919

Est. take-home

List your home with Redfin and save $4,710

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$2,642/mo

Redfin rental estimate

List your home for rent

Market trends in 12762, NY

Last updated September 2026

Sale-to-list price

86.6%

6.0% MoM

Median sale price

$365K

$20K MoM

Avg. days on market

159d

127 days MoM

Recently sold homes

1 MoM

Provided by Redfin

Sale history for 21 Roslyn Ridge Rd

Date

Event

Price

Public Records

Jan 4, 2021

Sold

$254,925

$155/sq ft

OneKey® MLS as Distributed by MLS Grid #H6064919

Dec 4, 2020

Sold

$254,925

$155/sq ft

Sep 8, 2020

Price Changed

$259,000

$157/sq ft

Aug 31, 2020

Price Changed

$275,000

$167/sq ft

Aug 24, 2020

Listed

$285,000

$173/sq ft

OneKey® MLS as Distributed by MLS Grid #H6045909

Aug 21, 2020

Listing Removed

—

Jun 17, 2020

Listed

$285,000

$173/sq ft

OneKey® MLS as Distributed by MLS Grid #H5128237

Mar 3, 2020

Sold

$128,173

$78/sq ft

Feb 7, 2020

Pending

—

Jan 21, 2020

Price Changed

$145,000

$88/sq ft

Dec 20, 2019

Listed

$155,000

$94/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$7,718

$27,800 + $118,900

$146,700

2025

$7,718 (+1.7%)

$27,800 + $118,900

$146,700

2024

$7,589 (−1.6%)

$27,800 + $118,900

$146,700

2023

$7,712 (+2.6%)

$27,800 + $118,900

$146,700

2022

$7,516 (−0.4%)

$27,800 + $118,900

$146,700

2021

$7,549 (−0.9%)

$27,800 + $118,900

$146,700

2020

$7,614 (−30.7%)

$27,800 + $113,100

$140,900

2019

$10,981 (+5.9%)

$27,800 + $113,100

$140,900

2018

$10,368 (+1.7%)

$27,800 + $113,100

$140,900

2017

$10,196 (+4.0%)

$27,800 + $113,100

$140,900

2016

$9,799 (+53.6%)

$27,800 + $113,100

$140,900

2015

$6,379 (−2.8%)

$27,800 + $113,100

$140,900

2014

$6,564

$27,800 + $113,100

$140,900

Tax history for 21 Roslyn Ridge Rd

Year

Property tax

Land + Additions

Assessment*

2026

$7,718

$27,800 + $118,900

$146,700

2025

$7,718 (+1.7%)

$27,800 + $118,900

$146,700

2024

$7,589 (−1.6%)

$27,800 + $118,900

$146,700

2023

$7,712 (+2.6%)

$27,800 + $118,900

$146,700

2022

$7,516 (−0.4%)

$27,800 + $118,900

$146,700

2021

$7,549 (−0.9%)

$27,800 + $118,900

$146,700

2020

$7,614 (−30.7%)

$27,800 + $113,100

$140,900

2019

$10,981 (+5.9%)

$27,800 + $113,100

$140,900

2018

$10,368 (+1.7%)

$27,800 + $113,100

$140,900

2017

$10,196 (+4.0%)

$27,800 + $113,100

$140,900

2016

$9,799 (+53.6%)

$27,800 + $113,100

$140,900

2015

$6,379 (−2.8%)

$27,800 + $113,100

$140,900

2014

$6,564

$27,800 + $113,100

$140,900

*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

1.96 Acres

Year renovated

—

Sq. Ft.

1,648

Year built

1991

Style

Single Family Residential

County

Sullivan County

APN

482000A038B 0001026000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 13, 2026.

Property details

Parking

Parking Information
Parking Total: 1
Parking Features: Attached

Interior

Heating & Cooling
Cooling: None
Heating: Baseboard, Oil

Interior Features
Interior Features: Ceiling Fan(s),First Floor Bedroom,Master Downstairs,Walk-In Closet(s)
Appliances: Dishwasher, Dryer, Electric Water Heater, Microwave, Refrigerator, Washer
Flooring: Carpet, Hardwood
Patio And Porch Features: Deck

Room Information
Basement YN: Yes
Attic: None
Rooms Total: 10
Basement: Finished, Full, Walk-Out Access

Bathroom Information
Bathrooms Full: 3

Exterior

Exterior Features
Construction Materials: Frame, Wood Siding
Waterfront YN: No

Lot Information
Additional Parcels YN: No
Lot Features: Level, Part Wooded, Sloped

Property Information
Living Area Source: Public Records
Property Sub Type: Single Family Residence

Financial

Tax Information
Tax Year: 2019
Tax Source: Municipality
Tax Annual Amount: $7,154

Financial Information
Buyer Financing: Conventional

Utilities

Utility Information
Sewer: Septic Tank
Utilities: Trash Collection Private

Location

School Information
Elementary School: Contact Agent
High School: Monticello High School
High School District: Monticello

Location Information
Hamlet: Mongaup Valley
Directions: 17B to Roslyn Ridge Road. First house on the left.
County Or Parish: Sullivan County

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,648
Stories: 1.0
Lot Size: 1.96 acres
Style: Single Family Residential
Year Built: 1991
Year Renovated: —
County: Sullivan County
APN: 482000A038B 0001026000

Home facts updated by county records on Oct 13, 2026

Around this home

Schools

Kenneth L Rutherford School

Public 3-5 • Assigned • 5.8mi

3/10

Robert J Kaiser Middle School

Public 6-8 • Assigned • 5.7mi

2/10

Monticello High School

Public 9-12 • Assigned • 5.7mi

3/10

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

2/10 Heat Factor

7 days above 92° expected this year, 15 days in 30 years

2/10 Wind Factor

4% chance of strong winds in next 30 years

2/10 Air Factor

0 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

Mongaup Valley, NY • 12762

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 8.5 hours in June and 3.4 hours in December, placing it below the U.S. average for solar exposure.

8.5 hrs

3.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$448,000 – $542,000

Reach more buyers when you sell with Redfin. Save up to $4,710 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

$310,000

3 beds2 baths1,152 sq ft

77 Murphy Rd, Swan Lake, NY 12783

7.14 lush acres • Above ground pool • Local dining

Listing by Malek Properties

$575,000

4 beds3 baths2,696 sq ft

226 Big Woods Rd, Harris, NY 12742

12.6 acres • Tiered decking • Private pool

Listing by Rieber Realty Inc

$699,900

1 bed1.5 baths1,152 sq ft

62 Airport Rd, Mongaup Valley, NY 12762

18 acres • Private driveway • Expansive lawns

Listing by Malek Properties

3D WALKTHROUGH

$799,000

4 beds1.5 baths1,592 sq ft

21 Hans Fischer Rd, Bethel, NY 12726

Circa 1900 farmhouse • Cozy woodstove • Detached garage

Listing by BERKSHIRE HATHAWAY

$299,000

3 beds2 baths960 sq ft

5 Highland Ave, Monticello, NY 12701

Renovated house • Quiet dead end • 0.23 acre lot

Listing by MS Realty Group USA, Inc

$60,000

Land— sq ft

Orange Ave, Smallwood, NY 12778

Private lake • Quiet dead-end road • Clubhouse

Listing by Caroline Akt Realty LLC

Home values near 21 Roslyn Ridge Rd

Data from public records.

Address	Redfin Estimate
28 Roslyn Ridge Rd, Mongaup Valley, NY 5 Beds \| 3 Baths \| 1764 Sq. Ft.	$451,531
10 Roslyn Ridge Rd, Mongaup Valley, NY 3 Beds \| 2 Baths \| 1248 Sq. Ft.	$353,542

Address	Redfin Estimate
47 Roslyn Ridge Rd, Mongaup Valley, NY 3 Beds \| 2 Baths \| 1704 Sq. Ft.	$421,456
38 Roslyn Ridge Rd, Mongaup Valley, NY 3 Beds \| 2 Baths \| 2016 Sq. Ft.	$428,990

Address	Redfin Estimate
66 Roslyn Ridge Rd, Mongaup Valley, NY 3 Beds \| 2 Baths \| 1760 Sq. Ft.	$423,516
63 Roslyn Ridge Rd, Mongaup Valley, NY 3 Beds \| 2 Baths \| 1824 Sq. Ft.	$458,285

Property information provided by OneKey® MLS as Distributed by MLS Grid when last listed in 2020. This data may not match . 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 Sullivan County	Agents near me	White Plains, NY homes for sale	Sullivan County 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	Sullivan County Property Records
Condos for sale near me	Buffalo, NY homes for sale	NY New Listings

Bergen County homes for sale
Dutchess County homes for sale
Orange County homes for sale

Monticello homes for sale
Wallkill homes for sale
Livingston Manor homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in 12762, NY

Sale history for 21 Roslyn Ridge Rd

Tax history for 21 Roslyn Ridge Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

Home values near 21 Roslyn Ridge Rd

More real estate resources