Westchester County  »  10523  »  Knolltop Rd  »  21 Knolltop Rd

21 Knolltop Road, Elmsford, NY 10523 - Property report

Also known as: 21 Knolltop Rd

Property image for 21 Knolltop Road, Elmsford, NY 10523
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Property type

One Family Year-Round Residence (210)

Acreage

0.54

Sale price

$740,000

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 Knolltop Road
ZIP code
10523
County
Westchester
SWIS code
Village of Elmsford
Parcel ID
5.50-96-23

Owner

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

Sales
Sale date
12/21/2018
Sale price
$740,000
Arm's length
Tax
Tax year
2025
Current property tax
$17,610
Zoning & Use
Zoning
R-0
Building
Property type
One Family Year-Round Residence (210)
Lot
Acreage
0.54

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 Knolltop Road, Elmsford, NY

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

Sales history for 21 Knolltop Road, Elmsford, NY 10523

Sale date Sale price Buyer name Seller name
12/21/2018 $740,000 XXXXXX XXXX X; XXXXXX XXXXXXX XXXXXXX XXXXXXXXX
10/06/1998 $445,000 XXXXXXX XXXXX & XXXXXXXXX XXXXX XXXXXXXX & XXXX

*Most recent sales on record for this property.

More about Westchester County property records.

Title documents

Date Type Amount Party 1 Party 2
10/15/2019 - R
08/27/2019 - D		 Other
(Registered agreement)		 XXXX X XXXXXX XXXXXXXX XXXXX XXXX XX
10/15/2019 - R
07/16/2019 - D		 Assignment XXXXXXXX XXXXXXXXXX XXXXXXXXXXXX XXXXXXX XXX XXXXXXXX XXXXX XXXX XX
01/03/2019 - R
12/21/2018 - D		 Mortgage XXXX X XXXXXX XXXXXXXX XXXXXXXXXX XXXXXXXXXXXX XXXXXXX XXX
01/03/2019 - R
12/21/2018 - D		 Deed XXXXXXX XXXXXXXXX XXXXXX XXXX X
10/15/1998 - R
10/06/1998 - D		 Deed XXXXX XXXXXXXX & XXXX XXXXXXX XXXXX & XXXXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 Knolltop 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
$17,610
Base tax
$27,784
Recent tax assessments
Market value
$1,016,500
Land value
$158,200
Building value
$858,300
Assessed value
$1,016,500

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 $1,016,500 $1,016,500 27.333 $27,784 +3.35%
2024 $950,000 $950,000 28.2994 $26,884 +10.61%
2023 $856,000 $856,000 28.3942 $24,305 +0.15%
2022 $827,100 $827,100 29.3433 $24,270 -2.42%
2021 $820,000 $820,000 30.3302 $24,871 +10.89%
2020 $740,000 $740,000 30.30836 $22,428 -4.41%
2019 $777,100 $777,100 30.191722 $23,462 -0.05%
2018 $777,100 $777,100 30.2071 $23,474 +4.69%
2017 $748,100 $748,100 29.973091 $22,423 -96.65%
2016 $726,300 $726,300 921.919 $669,590 +3042.62%
Permits

Permit information for 21 Knolltop 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 Knolltop 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)
Our Lady Of Mount Carmel School NR Private PK, K-8 185 0.50
Our Lady Of Mount Carmel School NR Private PK, K-8 185 0.50
NY School for the Deaf NR Private PK, K-12 0 0.50
NY School for the Deaf NR Private PK, K-12 0 0.50
New York School for the Deaf NR Private PK-12 135 0.54
Carl L Dixson Elementary School NR Public PK, K-1 154 0.55
Carl L Dixson Elementary School NR Public PK, K-1 154 0.55
Alice E Grady Elementary School 5 Public 2-6 383 0.68
Richard J Bailey School 6 Public 4-6 336 1.22
Blythedale School NR Public K-12 123 1.44
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Our Lady Of Mount Carmel School NR Private PK, K-8 185 0.50
NY School for the Deaf NR Private PK, K-12 0 0.50
New York School for the Deaf NR Private PK-12 135 0.54
Alexander Hamilton High School 5 Public 7-12 485 0.62
Blythedale School NR Public K-12 123 1.44
Solomon Schechter-Upper School NR Private 6-12 0 1.48
The Leffell School NR Private K-12 744 1.52
Woodlands Senior High School 6 Public 7-12 681 1.72
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
NY School for the Deaf NR Private PK, K-12 0 0.50
New York School for the Deaf NR Private PK-12 135 0.54
Alexander Hamilton High School 5 Public 7-12 485 0.62
Blythedale School NR Public K-12 123 1.44
Solomon Schechter-Upper School NR Private 6-12 0 1.48
The Leffell School NR Private K-12 744 1.52
Maria Regina High School NR Private 9-12 544 1.53
Woodlands Senior High School 6 Public 7-12 681 1.72
Ardsley High School 10 Public 9-12 716 2.65
Irvington High School 9 Public 9-12 548 2.94

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

Neighbors for 21 Knolltop Road, Elmsford, NY

10 Old Rd, Elmsford 17 Old Knollwood Rd, Elmsford 18 Old Knollwood Rd, Elmsford 8 Old Rd, Elmsford 6 Old Rd, Elmsford 2 Crescent Dr, Elmsford 19 Knolltop Rd, Elmsford 21 Old Knollwood Rd, Elmsford 16 Old Knollwood Rd, Elmsford 22 Knolltop Rd, Elmsford 25 Old Knollwood Rd, Elmsford 16 Crescent Dr, Elmsford 3 Crescent Dr, Elmsford 10 Salk Dr, Elmsford 9 Salk Dr, Elmsford 23 Old Knollwood Rd, Elmsford 19 Old Knollwood Rd, Elmsford 20 Knolltop Rd, Elmsford 2 Old Rd, Elmsford 4 Old Rd, Elmsford

Nearby ZIP codes for 21 Knolltop 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

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

21 Knolltop Road, Elmsford, NY 10523 was last sold on 12/21/2018 for $740,000.

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

21 Knolltop Road, Elmsford, NY 10523 is currently assessed at $1,016,500.

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

The property taxes for 21 Knolltop Road, Elmsford, NY 10523 total $27,783.

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