434 Cognewaugh Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 434 Cognewaugh Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	5 bd · 5 ba · 5,703 sqft · built 2004
Lot Size	2.08 acres (90,605 sqft)
Owner	2 Individual Names on File
Last Sale	$4,045,000 (Dec 2022)
Tax Bill	$31,090 (2026)
Deeds & Mortgages	Dec 2022 Sale & Mortgage Jul 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`08A-1264`

Property Details

APN / Parcel Number

Primary APN	`08A-1264`
Alternative APNs	`GREE M:08A B:1264` `357/031`

Interior

Bedrooms	5 Beds
Full Baths	5 Baths
Half Baths	2 Half Baths
Total Rooms	14 Rooms
Stories	2 Stories
Building Area	5,703 sqft Living Area
Attic	Attic
Attic Area	806 sqft
Basement Area	2,244 sqft
Unfinished Basement	2,244 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2004
Effective Year Built	Effective 2004
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	90,605 sqft (2.08 acres)
Garage Type	Attached
Parking Spaces	1 Parking Space
Pool Type	In-Ground Pool

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C
Heating Fuel	Oil

Location & Zoning

Account Number	357/031
Street Address	434 COGNEWAUGH RD
City	COS COB
State	CT
Zip	06807-1107
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RA-2
Legal Block	1264
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	1
Census Block	1006
Census Tract	10202

Owner

434 Cognewaugh Rd is owned and occupied by two individuals who bought it in December 2022.

Source: Greenwich Town records, as of October 21, 2026

Owner of Record	2 Individual Names on File
Mailing Address	434 COGNEWAUGH RD, COS COB, CT 06807-1107
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Dec 2, 2022	Warranty Deed, Transfer · Stand-Alone First Mortgage CITY NATIONAL BANK
Jul 7, 2021	Warranty Deed, Transfer · Stand-Alone First Mortgage WILLIAM RAVEIS MORTGAGE CO

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 2, 2022 · Amount on File
Deed Sale	Dec 2, 2022 · Amount on File
Prior Sale	Jul 7, 2021 · Amount on File
Deed Document Number	20229819
Deed Book / Page	8177 / 187
Record Updated	Oct 29, 2026

December 2022: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Dec 2, 2022
Property Address	434 COGNEWAUGH RD, COS COB, CT 06807-1107
Document Number	008177-187
Book / Page	8177 / 187
Instrument Date	Nov 2, 2022
Instrument	9819
Transaction Type	Transfer
Record Updated	Nov 20, 2025

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4007 OUTER DR, NASHVILLE, TN 37204-4025

Mortgage

Document Number	0000009821
Date	Dec 2, 2022
Instrument	9821

Lender

Name	CITY NATIONAL BANK
Type	Bank

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

July 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Jul 7, 2021
Property Address	434 COGNEWAUGH RD, COS COB, CT 06807-1107
Document Number	0007926-64
Book / Page	7926 / 64
Instrument Date	Jul 7, 2021
Instrument	7815
Transaction Type	Transfer
Record Updated	Jan 17, 2022

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Investor	Possibly a Property Investor

Mortgage

Document Number	0000007816
Date	Jul 7, 2021
Instrument	7816

Lender

Name	WILLIAM RAVEIS MORTGAGE CO

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

Tax Assessment & Valuation

The 2026 property tax bill for 434 Cognewaugh Rd was $31,090, up 11% from the year before.

Source: Greenwich Town assessment roll, as of June 25, 2026

Property Jurisdictions

Type	Name
State	Connecticut
County Subdivision	Greenwich Town
Unified School District	Greenwich School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$31,090.00 (+11%)	$3,070,620 (+31.99%) Land $813,610 Building $2,257,010	$4,754,153 (+191.93%)
2025	$28,010.00	$2,326,450 Land $625,800 Building $1,700,650	$1,628,515 Land $438,060 Building $1,190,455
2024	$28,010.00 (+9.09%)
2023	$25,676.00 (+8.63%)	$2,254,280 (+7.58%) Land $625,800 Building $1,628,480
2022	$23,637.00	$2,095,450 Land $625,800 Building $1,469,650

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 434 Cognewaugh Rd in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective November 28, 2025

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 434 Cognewaugh Rd is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 93% of the US · lower than 86% of Connecticut
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Internet Providers

Source: FCC Broadband Data Collection, based on 68 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber	980 / 880

Cell Coverage

No cell data coverage reported

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