434 Valley Rd, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 434 Valley Rd, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 1,895 sqft · built 1909
Lot Size	0.28 acres (12,197 sqft)
Owner	Individual Name on File
Last Sale	$723,500 (Sep 2007)
Tax Bill	$7,215 (2026)
Deeds & Mortgages	May 2024 Transfer Sep 2022 Refinance + 1 more
Flood Zone	Zone X (minimal risk)
APN	`08-1744S`

Property Details

APN / Parcel Number

Primary APN	`08-1744S`
Alternative APNs	`GREE M:08 B:1744/S` `401/105`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,895 sqft Living Area
Basement Area	730 sqft
Unfinished Basement	730 sqft

Exterior

Year Built	Built 1909
Effective Year Built	Effective 1970
Architectural Style	Conventional
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	12,197 sqft (0.28 acres)

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Hot Water
Heating Fuel	Gas

Location & Zoning

Account Number	401/105
Street Address	434 VALLEY RD
City	COS COB
State	CT
Zip	06807-1622
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R-12
Legal Block	1744/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	3
Census Block	3005
Census Tract	10202

Owner

434 Valley Rd is owned and occupied by an individual who acquired it in April 2024.

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

Owner of Record	Individual Name on File
Mailing Address	434 VALLEY RD, COS COB, CT 06807-1622
Occupancy	Owner Occupied
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
May 17, 2024	Quit Claim Deed, Transfer Quitclaim
Sep 23, 2022	Deed of Trust, Mortgage · Stand-Alone Refinance CITIZENS BANK
Oct 17, 2017	Warranty Deed, Transfer MB FINANCIAL BK NA

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 11, 2007 · Amount on File
Deed Sale	Sep 11, 2007 · Amount on File
Deed Book / Page	5487 / 310
Last Transfer Date	Apr 19, 2024
Transfer Doc	008323-189
Record Updated	Oct 29, 2026

May 2024: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	GREENWICH CT
Recording Date	May 17, 2024
Property Address	434 VALLEY RD, COS COB, CT 06807-1622
Document Number	008323-189
Book / Page	8323 / 189
Instrument Date	Apr 19, 2024
Instrument	2431
Transaction Type	Transfer
Record Updated	May 30, 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
Address	434 VALLEY RD, GREENWICH, CT

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	434 VALLEY RD, COS COB, CT 06807-1622
Transaction Type	Mortgage
Record Updated	Oct 6, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0008159-81
Date	Sep 23, 2022
Book Page	8159/81
Instrument	8402

Lender

Name	CITIZENS BANK
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	301 Months
Due	Oct 1, 2047

October 2017: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Oct 17, 2017
Property Address	434 VALLEY RD, COS COB, CT 06807-1622
Document Number	7307-4
Book / Page	7307 / 4
Transaction Type	Transfer
Record Updated	May 21, 2021

Transaction

Tax	$66.13
Amount Accuracy	Non-Arm's Length Transaction
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	7307-6
Date	Oct 17, 2017
Book Page	7307/6

Lender

Name	MB FINANCIAL BK NA

Agreement

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

Tax Assessment & Valuation

The 2026 property tax bill for 434 Valley Rd was $7,215, up 6.5% 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	$7,215.00 (+6.53%)	$688,170 (+25.57%) Land $558,600 Building $129,570	$1,385,272 (+261.1%)
2025	$6,773.00	$548,030 Land $422,730 Building $125,300	$383,621 Land $295,911 Building $87,710
2024	$6,773.00 (+6.21%)
2023	$6,377.00 (+0.92%)	$548,030 (-) Land $422,730 Building $125,300
2022	$6,319.00	$548,030 Land $422,730 Building $125,300

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

Flood

FEMA maps place 434 Valley Rd in Zone X, an area of minimal flood risk, within 100 ft of a high-risk flood zone.

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

Wildfire risk around 434 Valley 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 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 250 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.

Cell Coverage

4G LTE (outdoors only), no 5G reported

Nearby Properties on Valley Rd

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures