172 Cognewaugh Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 172 Cognewaugh Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	3 bd · 4.5 ba · 3,865 sqft · built 1956
Lot Size	1.78 acres (77,537 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,930,000 (Feb 2015)
Tax Bill	$15,059 (2026)
Deeds & Mortgages	Jun 2017 Mortgage Jun 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`08-3549`

Property Details

APN / Parcel Number

Primary APN	`08-3549`
Alternative APNs	`GREE M:08 B:3549` `381/040`

Interior

Bedrooms	3 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	11 Rooms
Stories	1 Story
Building Area	3,865 sqft Living Area
Basement Area	432 sqft
Unfinished Basement	432 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1970
Architectural Style	Contemporary
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Built-Up Asphalt
Lot Area	77,537 sqft (1.78 acres)
Garage Type	Basement
Parking Spaces	2 Parking Spaces
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	381/040
Street Address	172 COGNEWAUGH RD
City	COS COB
State	CT
Zip	06807-1504
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RA-2
Legal Block	3549
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	2
Census Block	2001
Census Tract	10202

Owner

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

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

Owner of Record	2 Individual Names on Record
Mailing Address	172 COGNEWAUGH RD, COS COB, CT 06807-1504
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jun 12, 2017	Deed of Trust, Mortgage UBS BANK USA
Jun 12, 2020	Deed of Trust, Mortgage · ARM UBS BANK USA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 10, 2015 · Amount on Record
Deed Sale	Feb 10, 2015 · Amount on Record
Prior Sale	Jan 8, 2007 · Amount on Record
Deed Book / Page	6849 / 319
Record Updated	Oct 29, 2026

June 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	172 COGNEWAUGH RD, COS COB, CT 06807-1504
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	7254-229
Date	Jun 12, 2017
Book Page	7254/229

Lender

Name	UBS BANK USA
Type	Bank

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2047

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	172 COGNEWAUGH RD, COS COB, CT 06807-1504
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	7681-37
Date	Jun 12, 2020
Book Page	7681/37
Instrument	4466

Lender

Name	UBS BANK USA
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	3.13%
Type Change Date	Jun 1, 2030
Index	LIBOR

Tax Assessment & Valuation

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	$15,059.00 (+2.1%)	$1,487,290 (+21.41%) Land $778,750 Building $708,540	$2,888,032 (+236.8%)
2025	$14,749.00	$1,225,000 (-) Land $595,700 Building $629,300	$857,500 Land $416,990 Building $440,510
2024	$14,749.00 (+5.7%)
2023	$13,953.00 (-5.42%)	$1,225,000 (-6.33%) Land $595,700 Building $629,300
2022	$14,752.00	$1,307,810 Land $595,700 Building $712,110

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

Flood

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

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

Wildfire Risk	Low lower than 94% of the US · lower than 90% 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.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people · EPA ID CT0150011
Water Source	Surface water
Last State Inspection	Jun 2025
Lead	Under 1 ppb (2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	24 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 83 locations within half a mile, as of December 31, 2025

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

May also be available: Verizon.

Cell Coverage

5G and 4G LTE (outdoors only)

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