Westchester County  »  10523  »  Old Knollwood Rd  »  21 Old Knollwood Rd

21 Old Knollwood Road, Elmsford, NY 10523 - Property report

Also known as: 21 Old Knollwood Rd

Property image for 21 Old Knollwood Road, Elmsford, NY 10523
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Property type

One Family Year-Round Residence (210)

Year built

1984

Acreage

0.63

Sale price

$800,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
21 Old Knollwood Road
ZIP code
10523
County
Westchester
SWIS code
Village of Elmsford
Parcel ID
5.50-96-17

Owner

Find out who owns 21 Old Knollwood Road, Elmsford, NY 10523. Uncover corporate and individual owners with a free account.

Sales
Sale date
12/03/2019
Sale price
$800,000
Arm's length
Tax
Tax year
2025
Current property tax
$17,685
Zoning & Use
Zoning
R-0
Building
Property type
One Family Year-Round Residence (210)
Building sq. ft.
3,250
Year built
1984
Bedrooms
4
Bathrooms
3
Lot
Acreage
0.63

Area overview

Walk score
9 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
21 /100.  Somewhat Bikeable
School district
552607

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 21 Old Knollwood Road, Elmsford, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 21 Old Knollwood Road, Elmsford, NY 10523

Sale date Sale price Buyer name Seller name
12/03/2019 $800,000 XXXXXX XXXXX; XXXXXX XXXX XXXXXXX XXXX

*Most recent sale on record for this property.

More about Westchester County property records.

Title documents

Date Type Amount Party 1 Party 2
12/12/2019 - R
12/03/2019 - D		 Mortgage XXXXX XXXXXX XXXXXXXX XXXXXXXXXX XXXXXXXXXXXX XXXXXXX XXX
12/12/2019 - R
12/03/2019 - D		 Deed XXXXXXX XXXX XXXXXX XXXXX
08/01/2018 - R Deed XXXX XXXX XXXX XXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 Old Knollwood Road, Elmsford, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025
Current property tax
$17,685
Base tax
$27,901
Recent tax assessments
Market value
$1,020,800
Land value
$198,000
Building value
$822,800
Assessed value
$1,020,800

More about Westchester County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y change
2025 $1,020,800 $1,020,800 27.333 $27,901 +3.35%
2024 $954,000 $954,000 28.2994 $26,998 -7.69%
2023 $1,030,000 $1,030,000 28.3942 $29,246 -2.30%
2022 $1,020,100 $1,020,100 29.3433 $29,933 +0.65%
2021 $980,500 $980,500 30.3302 $29,739 +22.84%
2020 $798,800 $798,800 30.30836 $24,210 -13.31%
2019 $925,000 $925,000 30.191722 $27,927 -11.82%
2018 $1,048,400 $1,048,400 30.2071 $31,669 +38.12%
2017 $765,000 $765,000 29.973091 $22,929 -96.65%
2016 $742,700 $742,700 921.919 $684,709 +3895.27%
Permits

Permit information for 21 Old Knollwood Road, Elmsford, NY

No recently recorded permits for this property.

Neighborhood

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
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Access the detailed traffic volume map for 21 Old Knollwood Road, Elmsford, NY 10523 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
NY School for the Deaf NR Private PK, K-12 0 0.48
NY School for the Deaf NR Private PK, K-12 0 0.48
New York School for the Deaf NR Private PK-12 135 0.51
New York School for the Deaf NR Private PK-12 135 0.51
Our Lady Of Mount Carmel School NR Private PK, K-8 185 0.52
Carl L Dixson Elementary School NR Public PK, K-1 154 0.57
Carl L Dixson Elementary School NR Public PK, K-1 154 0.57
Alice E Grady Elementary School 5 Public 2-6 383 0.69
Richard J Bailey School 6 Public 4-6 336 1.19
Blythedale School NR Public K-12 123 1.46
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
NY School for the Deaf NR Private PK, K-12 0 0.48
New York School for the Deaf NR Private PK-12 135 0.51
Our Lady Of Mount Carmel School NR Private PK, K-8 185 0.52
Alexander Hamilton High School 5 Public 7-12 485 0.62
Solomon Schechter-Upper School NR Private 6-12 0 1.46
Blythedale School NR Public K-12 123 1.46
The Leffell School NR Private K-12 744 1.50
Woodlands Senior High School 6 Public 7-12 681 1.69
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
NY School for the Deaf NR Private PK, K-12 0 0.48
New York School for the Deaf NR Private PK-12 135 0.51
Alexander Hamilton High School 5 Public 7-12 485 0.62
Solomon Schechter-Upper School NR Private 6-12 0 1.46
Blythedale School NR Public K-12 123 1.46
The Leffell School NR Private K-12 744 1.50
Maria Regina High School NR Private 9-12 544 1.51
Woodlands Senior High School 6 Public 7-12 681 1.69
Ardsley High School 10 Public 9-12 716 2.64
Irvington High School 9 Public 9-12 548 2.96

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 21 Old Knollwood Road, Elmsford, NY

17 Old Knollwood Rd, Elmsford 18 Old Knollwood Rd, Elmsford 8 Old Rd, Elmsford 2 Winthrop Ave, Elmsford 19 Knolltop Rd, Elmsford 16 Old Knollwood Rd, Elmsford 2 Crest Pl, Elmsford 25 Old Knollwood Rd, Elmsford 22 Knolltop Rd, Elmsford 21 Knolltop Rd, Elmsford 15 Old Rd, Elmsford 23 Old Knollwood Rd, Elmsford 9 Salk Dr, Elmsford 10 Salk Dr, Elmsford 20 Old Knollwood Rd, Elmsford 19 Old Knollwood Rd, Elmsford 1 Crescent Dr, Cortlandt Manor 13 Old Rd, Elmsford 20 Knolltop Rd, Elmsford 2 Old Rd, Elmsford

Nearby ZIP codes for 21 Old Knollwood Road, Elmsford, NY

10502, Westchester County, NY 10503, Westchester County, NY 10510, Westchester County, NY 10522, Westchester County, NY 10530, Westchester County, NY 10532, Westchester County, NY 10533, Westchester County, NY 10583, Westchester County, NY 10591, Westchester County, NY 10594, Westchester County, NY 10595, Westchester County, NY 10601, Westchester County, NY 10603, Westchester County, NY 10604, Westchester County, NY 10605, Westchester County, NY 10606, Westchester County, NY 10607, Westchester County, NY 10706, Westchester County, NY 10968, Rockland County, NY

Frequently asked questions

What is the year built for 21 Old Knollwood Road, Elmsford, NY 10523?

The development at 21 Old Knollwood Road, Elmsford, NY 10523 was built in 1984.

What is the total square footage of 21 Old Knollwood Road, Elmsford, NY 10523?

21 Old Knollwood Road, Elmsford, NY 10523 has a total of 3,250 square feet.

When was 21 Old Knollwood Road, Elmsford, NY 10523 last sold and what was the sale price?

21 Old Knollwood Road, Elmsford, NY 10523 was last sold on 12/03/2019 for $800,000.

What is the assessed value of 21 Old Knollwood Road, Elmsford, NY 10523?

21 Old Knollwood Road, Elmsford, NY 10523 is currently assessed at $1,020,800.

What are the property taxes for 21 Old Knollwood Road, Elmsford, NY 10523?

The property taxes for 21 Old Knollwood Road, Elmsford, NY 10523 total $27,901.

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