9 River Rd, Unit 418, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 9 River Rd, Unit 418, Cos Cob, CT 06807

Property Summary

Property Type	Condominium
Details	2 bd · 2.5 ba · 1,181 sqft · built 1979
Lot Size	2.75 acres (120,022 sqft)
Owner	2 Trust Names on File
Last Sale	$855,000 (Jul 2026)
Tax Bill	$4,353 (2025)
Deeds & Mortgages	Jul 2026 Sale Sep 2024 Sale
Flood Zone	Zone AE (high risk)
APN	`08A-1682S`

Property Details

APN / Parcel Number

Primary APN	`08A-1682S`
Alternative APNs	`GREE M:08A B:1682/S` `367/D18`

Interior

Bedrooms	2 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	4 Rooms
Units	20 Units
Stories	3 Stories
Building Area	1,181 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1985
Architectural Style	Other
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	120,022 sqft
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/D18
Street Address	9 RIVER RD, 418
City	COS COB
State	CT
Zip	06807-2747
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Local Zoning Code	WB
Legal Subdivision	PALMER POINT
Legal Block	1682/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	1
Census Block	1011
Census Tract	10800

Owner

9 River Rd, Unit 418 is owner-occupied and held in a trust since July 2026.

Source: Greenwich Town records, as of October 20, 2026

Owner of Record	2 Trust Names on File
Mailing Address	9 RIVER RD, 418, COS COB, CT 06807-2747
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Revocable Trust

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

Deeds, Mortgages & Sale History

Date	Document
Jul 1, 2026	Deed, Transfer
Sep 20, 2024	Warranty Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 1, 2026 · Amount on File
Deed Sale	Jul 1, 2026 · Amount on File
Prior Sale	Sep 20, 2024 · Amount on File
Deed Document Number	20264048
Deed Book / Page	8584 / 57
Prior Transfer Date	Jul 1, 2025
Prior Transfer Doc	00008489-4
Record Updated	Oct 29, 2026

July 2026: Deed, Transfer

Document Type	Deed
Jurisdiction	GREENWICH CT
Recording Date	Jul 1, 2026
Property Address	9 RIVER RD, 418, COS COB, CT 06807-2747
Document Number	0000004048
Book / Page	8584 / 57
Instrument Date	Jun 24, 2026
Instrument	20264048
Transaction Type	Transfer
Record Updated	Jul 15, 2026

Transaction

Amount	Amount on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	9 RIVER RD, 418, COS COB, CT 06807-2747

September 2024: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Sep 20, 2024
Property Address	9 RIVER RD UNIT 418, 418, COS COB, CT 06807-2747
Document Number	008363-326
Book / Page	8363 / 326
Instrument Date	Sep 10, 2024
Instrument	5329
Transaction Type	Transfer
Record Updated	Oct 3, 2024

Transaction

Amount	Amount on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	145 SHORE RD # R, R, OLD GREENWICH, CT 06870-2117

Tax Assessment & Valuation

The 2025 property tax bill for 9 River Rd, Unit 418 was $4,353.

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	$4,353.00	$352,240 Building $352,240	$246,568 Building $246,568
2024	$4,353.00 (+6.2%)
2023	$4,099.00 (+0.94%)	$352,240 (-) Building $352,240
2022	$4,061.00	$352,240 Building $352,240

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 9 River Rd, Unit 418 in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

Source: FEMA National Flood Hazard Layer, effective November 28, 2025

FEMA Flood Zone	Zone AE high risk
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	13.0 ft
Flood Insurance Requirement	Required federally backed loans

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

Wildfire

The area around 9 River Rd, Unit 418 has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land within 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 288 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, T-Mobile.

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