273 Valley Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 273 Valley Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	1 bd · 2.5 ba · 1,197 sqft · built 2017
Lot Size	0.35 acres (15,246 sqft)
Owner	Company Name on Record
Last Sale	$1,295,000 (Jun 2021)
Tax Bill	$25,006 (2026)
Deeds & Mortgages	Mar 2024 Transfer Jun 2021 Sale
Flood Zone	Zone X (minimal risk)
APN	`08A-1007S`

Property Details

APN / Parcel Number

Primary APN	`08A-1007S`
Alternative APNs	`GREE M:08A B:1007/S` `403/087`

Interior

Bedrooms	1 Bed
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	3 Rooms
Stories	1 Story
Building Area	1,197 sqft Living Area
Basement Area	125 sqft
Unfinished Basement	125 sqft

Exterior

Year Built	Built 2017
Effective Year Built	Effective 2017
Architectural Style	Conventional
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	15,246 sqft (0.35 acres)
Garage Type	Basement
Parking Spaces	2 Parking Spaces

Exterior Amenities

Pool Type	In-Ground Pool
Deck Area	Deck Area
Boat Access	Boat Access
Total Buildings	2 Buildings

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	403/087
Street Address	273 VALLEY RD
City	COS COB
State	CT
Zip	06807-1811
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R-12
Legal Block	1007/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	2
Census Block	2002
Census Tract	10202

Owner

Source: Greenwich Town records, as of October 21, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	273 VALLEY RD, COS COB, CT 06807-1811
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 1, 2024	Quit Claim Deed, Transfer Quitclaim
Jun 9, 2021	Warranty Deed, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 9, 2021 · Amount on Record
Deed Sale	Jun 9, 2021 · Amount on Record
Prior Sale	Jan 24, 2020 · Amount on Record
Deed Document Number	20216667
Deed Book / Page	7906 / 275
Last Transfer Date	Feb 28, 2024
Transfer Doc	008301-328
Record Updated	Oct 29, 2026

March 2024: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	GREENWICH CT
Recording Date	Mar 1, 2024
Property Address	273 VALLEY RD, COS COB, CT 06807-1811
Document Number	008301-328
Book / Page	8301 / 328
Instrument Date	Feb 28, 2024
Instrument	1005
Transaction Type	Transfer
Record Updated	Mar 21, 2024

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

June 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Jun 9, 2021
Property Address	273 VALLEY RD, COS COB, CT 06807-1811
Document Number	007906-275
Book / Page	7906 / 275
Instrument Date	Jun 2, 2021
Instrument	6667
Transaction Type	Transfer
Record Updated	Jul 28, 2023

Transaction

Amount	Amount Recorded
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	185 HEATHCOTE RD, SCARSDALE, NY 10583-4510

Tax Assessment & Valuation

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	$25,006.00 (+30.03%)	$2,385,180 (+53.29%) Land $552,860 Building $1,832,320	$1,865,891 (+71.31%)
2025	$19,231.00	$1,556,030 (-) Land $426,650 Building $1,129,380	$1,089,221 Land $298,655 Building $790,566
2024	$19,231.00 (+6.21%)
2023	$18,106.00 (+138.11%)	$1,556,030 (+135.93%) Land $426,650 Building $1,129,380
2022	$7,604.00	$659,540 Land $426,650 Building $232,890

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

Flood

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

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

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

Wildfire Risk	Low lower than 99.1% of the US · lower than 99% of Connecticut
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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 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.

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