664 River Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 664 River Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 3,312 sqft · built 1997
Lot Size	0.5 acres (21,780 sqft)
Owner	Individual Name on Record
Tax Bill	$14,861 (2025)
Deeds & Mortgages	Feb 2026 Line of Credit Apr 2023 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`12-1562S`

Property Details

APN / Parcel Number

Primary APN	`12-1562S`
Alternative APNs	`GREE M:12 B:1562/S` `400/006`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	3,312 sqft Living Area
Basement Area	668 sqft
Unfinished Basement	668 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1997
Effective Year Built	Effective 1997
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	21,780 sqft (0.5 acres)
View / Lot	Waterfront
Garage Type	Basement
Parking Spaces	2 Parking Spaces
Pool Type	Spa / Hot Tub (No Pool)
Deck Area	Deck Area
Boat Access	Boat Access

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	400/006
Street Address	664 RIVER RD
City	COS COB
State	CT
Zip	06807-1907
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RA-1
Legal Block	1562/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	3
Census Block	3000
Census Tract	10202

Owner

Source: Greenwich Town records, as of June 25, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	664 RIVER RD, COS COB, CT 06807-1907
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Feb 25, 2026	Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA NA
Apr 4, 2023	Deed of Trust, Mortgage · ARM M & T BANK

Assessor's Deed Record

Deed Names	Name on Deed
Record Updated	Sep 20, 2026

February 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	664 RIVER RD, COS COB, CT 06807-1907
Transaction Type	Mortgage
Record Updated	Mar 11, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	008535-328
Date	Feb 25, 2026
Book Page	8535/328
Instrument	1086

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2056

April 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	664 RIVER RD, COS COB, CT 06807-1907
Transaction Type	Mortgage
Record Updated	Apr 20, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	008208-222
Date	Apr 4, 2023
Book Page	8208/222
Instrument	1724

Lender

Name	M & T BANK
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	5%
Type Change Date	Apr 1, 2028
Index	Other
Margin	3

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
2025	$14,861.00	$1,202,460 (-) Land $569,660 Building $632,800	$841,722 Land $398,762 Building $442,960
2024	$14,861.00 (+6.21%)
2023	$13,992.00 (+0.92%)	$1,202,460 (-) Land $569,660 Building $632,800
2022	$13,864.00	$1,202,460 Land $569,660 Building $632,800

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
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
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 99.1% of the US · lower than 99% of Connecticut
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

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 250 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber · Fixed Wireless in parts of the area	980 / 880

May also be available: Frontier.

Cell Coverage

4G LTE (outdoors only), no 5G reported

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