9 River Rd, Unit 409, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 9 River Rd, Unit 409, Cos Cob, CT 06807

Property Summary

Property Type	Condominium
Details	1 bd · 1 ba · 1,021 sqft · built 1979
Lot Size	2.75 acres (120,022 sqft)
Owner	Individual Name on File
Last Sale	$502,624 (Sep 2024)
Tax Bill	$3,705 (2025)
Deeds & Mortgages	Sep 2024 Sale & Mortgage Aug 2020 Refinance + 1 more
Flood Zone	Zone AE (high risk)
APN	`08A-1673S`

Property Details

APN / Parcel Number

Primary APN	`08A-1673S`
Alternative APNs	`GREE M:08A B:1673/S` `367/D09`

Interior

Bedrooms	1 Bed
Full Baths	1 Bath
Total Rooms	4 Rooms
Units	20 Units
Stories	2 Stories
Building Area	1,021 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1979
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	Hot Water
Heating Fuel	Oil

Location & Zoning

Account Number	367/D09
Street Address	9 RIVER RD, 409
City	COS COB
State	CT
Zip	06807-2722
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Local Zoning Code	WB
Legal Subdivision	PALMER POINT CONDO
Legal Block	1673/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	1
Census Block	1011
Census Tract	10800

Owner

9 River Rd, Unit 409 is owned by an individual who bought it in September 2024.

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

Owner of Record	Individual Name on File
Mailing Address	11 OLD FIELD POINT RD, GREENWICH, CT 06830-6171
Owner Type	Individual
Vesting	Individual(s)

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
Sep 18, 2024	Warranty Deed, Transfer · Stand-Alone First Mortgage SIKORSKY FINANCIAL CREDIT UNION INC
Aug 12, 2020	Deed of Trust, Mortgage · Stand-Alone Refinance WILLIAM RAVEIS MORTGAGE CO
Jul 10, 2018	Warranty Deed, Transfer WILLIAM RAVEIS MTG CO

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 18, 2024 · Amount on File
Deed Sale	Sep 18, 2024 · Amount on File
Prior Sale	Jul 10, 2018 · Amount on File
Deed Document Number	20245255
Deed Book / Page	8362 / 151
Record Updated	Oct 29, 2026

September 2024: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Sep 18, 2024
Property Address	9 RIVER RD UNIT 409, 409, COS COB, CT 06807-2722
Document Number	008362-151
Book / Page	8362 / 151
Instrument Date	Sep 16, 2024
Instrument	5255
Transaction Type	Transfer
Record Updated	Mar 13, 2026

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV 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	11 OLD FIELD POINT RD, GREENWICH, CT 06830-6171

Mortgage

Document Number	0000005256
Date	Sep 18, 2024
Instrument	5256

Lender

Name	SIKORSKY FINANCIAL CREDIT UNION INC

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate
Rate	5.63%
Type Change Date	Oct 1, 2034
Max Rate At Change	2.75%
Index	1-Year CMT

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	9 RIVER RD UNIT 409, 409, COS COB, CT 06807-2722
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	7716-327
Date	Aug 12, 2020
Book Page	7716/327
Instrument	6492

Lender

Name	WILLIAM RAVEIS MORTGAGE CO

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2050

July 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Jul 10, 2018
Property Address	9 RIVER RD UNIT 409, 409, COS COB, CT 06807-2722
Document Number	7407-36
Book / Page	7407 / 36
Instrument	5484
Transaction Type	Transfer
Record Updated	May 21, 2021

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$29.91
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	74070040
Date	Jul 10, 2018
Instrument	07407/0040

Lender

Name	WILLIAM RAVEIS MTG CO

Agreement

Amount	Amount on Record
Term	360 Months
Due	Jul 10, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 9 River Rd, Unit 409 was $3,705.

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	$3,705.00	$299,810 Building $299,810	$209,867 Building $209,867
2024	$3,705.00 (+6.19%)
2023	$3,489.00 (+0.93%)	$299,810 (-) Building $299,810
2022	$3,457.00	$299,810 Building $299,810

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

Flood

FEMA maps place 9 River Rd, Unit 409 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 409 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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