507 River Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 507 River Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	5 bd · 4.5 ba · 4,100 sqft · built 2015
Lot Size	0.33 acres (14,375 sqft)
Owner	2 Individual Names on File
Last Sale	$725,000 (Jul 2014)
Tax Bill	$19,553 (2026)
Deeds & Mortgages	Aug 2022 Refinance Jan 2022 Refinance + 1 more
Flood Zone	Zone X (minimal risk)
APN	`12-2206S`

Property Details

APN / Parcel Number

Primary APN	`12-2206S`
Alternative APNs	`GREE M:12 B:2206/S` `403/126`

Interior

Bedrooms	5 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	4,100 sqft Living Area
Basement Area	1,623 sqft
Unfinished Basement	1,623 sqft

Exterior

Year Built	Built 2015
Effective Year Built	Effective 2015
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	14,375 sqft (0.33 acres)
Garage Type	Attached
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C

Location & Zoning

Account Number	403/126
Street Address	507 RIVER RD
City	COS COB
State	CT
Zip	06807-1904
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R-12
Legal Block	2206/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	3
Census Block	3009
Census Tract	10202

Owner

507 River Rd is owned and occupied by two individuals who bought it in July 2014.

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 File
Mailing Address	507 RIVER RD, COS COB, CT 06807-1904
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Aug 12, 2022	Deed of Trust, Mortgage · Stand-Alone Refinance MORGAN STANLEY CREDIT CORP
Jan 20, 2022	Deed of Trust, Mortgage · Stand-Alone Refinance SECURE ONE CAPITAL
May 5, 2017	Deed of Trust, Mortgage WILLIAM RAVEIS MTG CO

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 1, 2014 · Amount on File
Deed Sale	Jul 1, 2014 · Amount on File
Deed Book / Page	6758 / 114
Record Updated	Oct 29, 2026

August 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	507 RIVER RD, COS COB, CT 06807-1904
Transaction Type	Mortgage
Record Updated	Sep 1, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0008146-71
Date	Aug 12, 2022
Book Page	8146/71
Instrument	7483

Lender

Name	MORGAN STANLEY CREDIT CORP
Type	Mortgage Company

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2052

January 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	507 RIVER RD, COS COB, CT 06807-1904
Transaction Type	Mortgage
Record Updated	Feb 3, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	008048-184
Date	Jan 20, 2022
Book Page	8048/184
Instrument	679

Lender

Name	SECURE ONE CAPITAL

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	349 Months
Due	Feb 1, 2051

May 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	507 RIVER RD, COS COB, CT 06807-1904
Transaction Type	Mortgage
Record Updated	Mar 1, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	7239-193
Date	May 5, 2017
Book Page	7239/193

Lender

Name	WILLIAM RAVEIS MTG CO

Agreement

Amount	Amount on Record
Term	360 Months
Due	May 1, 2047

Tax Assessment & Valuation

The 2026 property tax bill for 507 River Rd was $19,553, up 9.7% 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	$19,553.00 (+9.7%)	$1,865,080 (+29.32%) Land $703,430 Building $1,161,650	$3,158,911 (+212.9%)
2025	$17,824.00	$1,442,210 Land $511,770 Building $930,440	$1,009,547 Land $358,239 Building $651,308
2024	$17,824.00 (+13.38%)
2023	$15,721.00 (+0.92%)	$1,351,070 (-) Land $511,770 Building $839,300
2022	$15,578.00	$1,351,070 Land $511,770 Building $839,300

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

Flood

FEMA maps place 507 River 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 507 River 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 96% of the US · lower than 94% 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 319 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Frontier Fiber	5,000 / 5,000

May also be available: Verizon.

Cell Coverage

5G and 4G LTE (outdoors only)

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