NOT LISTED FOR SALE

423 Union Ave Unit 1 Mamaroneck, NY 10543

Rye Area

Estimated Value: $929,145 - $1,029,000

3 Beds
1 Bath
2,168 Sq Ft
$444/Sq Ft Est. Value

About This Home

This home is located at 423 Union Ave Unit 1, Mamaroneck, NY 10543 and is currently estimated at $963,536, approximately $444 per square foot. 423 Union Ave Unit 1 is a home located in Westchester County with nearby schools including F.E. Bellows Elementary School, Daniel Warren Elementary School, and Rye Neck Middle School.

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Closed on
Jul 3, 2025
Sold by
Bought by
Current Estimated Value
$963,536

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$712,500
Interest Rate
0.0685%
Mortgage Type
New Conventional

Purchase Details

Closed on
Jul 21, 2017
Sold by
Bought by

Purchase Details

Closed on
Dec 1, 2015
Sold by
Bought by

Purchase Details

Closed on
Aug 28, 1997
Sold by
Bought by
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

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ICE

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First American

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Quantarium

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Average Value
Not Available
List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$950,000 Stewart Title Insurance Compan
$450,000 None Available
-- Attorney
$280,000 --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Open $712,500
Previous Owner $325,000
Previous Owner $170,000
Previous Owner $350,000
Previous Owner $294,000
Source: Public Records

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $14,774 $1,024,700 $443,000 $581,700
2024 $19,682 $826,300 $443,000 $383,300
2023 $14,319 $794,500 $421,900 $372,600
2022 $14,135 $756,700 $421,900 $334,800
2021 $18,493 $694,200 $421,900 $272,300
2020 $16,416 $694,200 $421,900 $272,300
2019 $17,638 $601,500 $335,300 $266,200
2018 $10,740 $565,900 $328,900 $237,000
2017 $2,334 $585,300 $325,800 $259,500
2016 $17,370 $557,200 $271,500 $285,700
2015 -- $589,600 $304,500 $285,100
2014 -- $470,800 $263,900 $206,900
2013 -- $462,000 $255,100 $206,900
Source: Public Records

Map

New York Westchester County Mamaroneck 10543

423 Union Ave Unit 1, Mamaroneck, NY

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

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