558 River Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 558 River Rd, Cos Cob, CT 06807 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 2,838 sqft · built 1978
Lot Size	0.38 acres (16,553 sqft)
Owner	2 Trust Names on File
Tax Bill	$9,449 (2025)
Deeds & Mortgages	Sep 2021 Transfer
Flood Zone	Zone X (minimal risk)
APN	`12-2846S`

Property Details

APN / Parcel Number

Primary APN	`12-2846S`
Alternative APNs	`GREE M:12 B:2846/S` `402/045`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,838 sqft Living Area
Basement Area	1,688 sqft
Unfinished Basement	1,688 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	16,553 sqft (0.38 acres)
Garage Type	Basement
Parking Spaces	2 Parking Spaces
Deck Area	Deck Area

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Hot Water
Heating Fuel	Oil

Location & Zoning

Account Number	402/045
Street Address	558 RIVER RD
City	COS COB
State	CT
Zip	06807-1905
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Block	2846/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	3
Census Block	3000
Census Tract	10202

Owner

Source: Greenwich Town records · APN 12-2846S

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	2 Trust Names on File
Mailing Address	925 BUTTERCUP GLN, BRADENTON, FL 34212-5007
Owner Type	Individual
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Transfer Date	Aug 30, 2021
Transfer Doc	7971-193
Record Updated	Sep 20, 2026

September 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	GREENWICH CT
Recording Date	Sep 13, 2021
Property Address	558 RIVER RD, COS COB, CT 06807-1905
Document Number	7971-193
Book / Page	7971 / 193
Instrument Date	Aug 30, 2021
Instrument	10526
Transaction Type	Transfer
Record Updated	Sep 30, 2021

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	925 BUTTERCUP GLN, BRADENTON, FL 34212-5007

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	$9,449.00 (+6.22%)	$764,540 (-) Land $503,720 Building $260,820	$535,178 Land $352,604 Building $182,574
2023	$8,896.00 (+0.92%)	$764,540 (-) Land $503,720 Building $260,820
2022	$8,815.00	$764,540 Land $503,720 Building $260,820

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 X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No
Nearest Special Flood Hazard Area	Zone AE, within 100 ft

Wildfire

Wildfire Risk	Low above 5% of the US · above 7% of Connecticut
Wildfire Likelihood	Less than 1 in 10,000 per year
Exposure	Direct burnable vegetation at the parcel

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