NOT LISTED FOR SALE

523 E Putnam Ave Unit B Cos Cob, CT 06807

Estimated Value: $2,621,213 - $2,755,000

3 Beds
4 Baths
3,251 Sq Ft
$825/Sq Ft Est. Value

About This Home

This home is located at 523 E Putnam Ave Unit B, Cos Cob, CT 06807 and is currently estimated at $2,682,303, approximately $825 per square foot. 523 E Putnam Ave Unit B is a home located in Fairfield County with nearby schools including Cos Cob School, Central Middle School, and Greenwich High 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
Sep 9, 2025
Sold by
Bought by
Current Estimated Value
$2,682,303

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,955,532
Outstanding Balance
$1,948,701
Interest Rate
6.72%
Mortgage Type
Future Advance Clause Open End Mortgage
Estimated Equity
$733,602

Purchase Details

Closed on
Dec 18, 2019
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,575,000
Interest Rate
3.6%
Mortgage Type
Purchase Money Mortgage
Source: Public Records

Range of Values:

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

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

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ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

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First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

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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
$2,550,000 --
$2,250,000 None Available
$2,250,000 None Available
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 $1,955,532
Previous Owner $1,575,000
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 $18,422 $1,490,580 $0 $1,490,580
2024 $17,792 $1,490,580 $0 $1,490,580
2023 $17,344 $1,490,580 $0 $1,490,580
2022 $17,186 $1,490,580 $0 $1,490,580
2021 $19,829 $1,646,960 $0 $1,646,960
2020 $19,796 $1,646,960 $0 $1,646,960
2019 $19,994 $1,646,960 $0 $1,646,960
2018 $20,373 $1,646,960 $0 $1,646,960
Source: Public Records

Map

Connecticut Fairfield County Cos Cob 06807

523 E Putnam Ave Unit B, Cos Cob, CT

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