20 River Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 20 River Rd, Cos Cob, CT 06807 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,934 sqft · built 1979
Lot Size	0.29 acres (12,632 sqft)
Owner	Individual Name on File
Last Sale	$420,000 (Mar 1999)
Tax Bill	$8,281 (2025)
Deeds & Mortgages	Jun 2017 Mortgage
Flood Zone	Zone AE (high risk)
APN	`08-2446S`

Property Details

APN / Parcel Number

Primary APN	`08-2446S`
Alternative APNs	`GREE M:08 B:2446/S` `367/041`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,934 sqft Living Area
Basement Area	1,040 sqft
Unfinished Basement	1,040 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1979
Architectural Style	Contemporary
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	12,632 sqft (0.29 acres)
View / Lot	Waterfront
Garage Type	Attached
Parking Spaces	1 Parking Space
Deck Area	Deck Area

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	367/041
Street Address	20 RIVER RD
City	COS COB
State	CT
Zip	06807-2716
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Block	2446/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	1
Census Block	1005
Census Tract	10800

Owner

Source: Greenwich Town records · APN 08-2446S

Assessment roll updated June 25, 2026 · Last verified July 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 File
Mailing Address	20 RIVER RD, COS COB, CT 06807-2716
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Mar 24, 1999 · Amount on Record
Deed Sale	Mar 24, 1999 · Amount on Record
Prior Sale	Jun 28, 1995 · Amount on Record
Deed Book / Page	3244 / 10
Record Updated	Sep 20, 2026

June 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	20 RIVER RD, COS COB, CT 06807-2716
Document Number	7260-82
Book / Page	007260 / 000082
Transaction Type	Mortgage
Record Updated	Jul 18, 2017

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20 RIVER RD COS COB CT 068072716, COS COB, CT 06807-2716

Mortgage

Document Number	7260-82
Date	Jun 22, 2017
Book Page	007260/000082

Lender

Name	USAA

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	120 Months
Due	Jun 21, 2027

Tax Assessment & Valuation

Source: Greenwich Town records · Assessment roll updated June 25, 2026 · Last verified July 2026

Property Jurisdictions

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

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$8,281.00	$670,040 (-) Land $406,630 Building $263,410	$469,028 Land $284,641 Building $184,387
2024	$8,281.00 (+6.21%)
2023	$7,797.00 (+0.92%)	$670,040 (-) Land $406,630 Building $263,410
2022	$7,726.00	$670,040 Land $406,630 Building $263,410

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, County delivery 09001C, updated November 28, 2025 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone AE
Special Flood Hazard Area	Yes
Flood Hazard	High
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	11.0 ft
Flood Insurance Requirement	Required (federally backed mortgages)

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 288 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Optimum Communications	Fiber	8,000 / 8,000
Verizon	Fiber	980 / 880
Optimum Communications	Cable	940 / 35
Starlink	Satellite (low-earth orbit)	280 / 30

May also be available at this address: T-Mobile USA, Verizon, Frontier. Availability varies by address; speeds are provider-advertised maximums, not measured.