4 North St, Cos Cob, CT 06807 Property Records

Greenwich Town property record for 4 North St, Cos Cob, CT 06807

Property Summary

Property Type	Single Family Home
Details	3 bd · 3.5 ba · 2,892 sqft · built 1958
Lot Size	0.12 acres (5,227 sqft)
Owner	2 Individual Names on File
Last Sale	$1,017,500 (May 2010)
Tax Bill	$9,939 (2025)
Deeds & Mortgages	Apr 2022 Refinance Mar 2017 Sale
Flood Zone	Zone X (minimal risk)
APN	`08-1733S`

Property Details

APN / Parcel Number

Primary APN	`08-1733S`
Alternative APNs	`GREE M:08 B:1733/S` `400/30A`

Interior

Bedrooms	3 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	2,892 sqft Living Area
Basement Area	1,446 sqft
Unfinished Basement	1,446 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1958
Effective Year Built	Effective 1970
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Asphalt
Lot Area	5,227 sqft (0.12 acres)
Garage Type	Basement
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	400/30A
Street Address	4 NORTH ST
City	COS COB
State	CT
Zip	06807-1612
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R-12
Legal Block	1733/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	3
Census Block	3005
Census Tract	10202

Owner

4 North St is owned and occupied by two individuals who bought it in May 2010.

Source: Greenwich Town records, as of September 1, 2026

Owner of Record	2 Individual Names on File
Mailing Address	4 NORTH ST, GREENWICH, CT 06830-4726
Occupancy	Owner Occupied
Owner Type	Individual

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
Apr 1, 2022	Deed of Trust, Mortgage · Stand-Alone Refinance CITIZENS BANK
Mar 17, 2017	Warranty Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 28, 2010 · Amount on File
Deed Sale	May 28, 2010 · Amount on File
Deed Book / Page	5954 / 261
Record Updated	Oct 29, 2026

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	4 NORTH ST, COS COB, CT 06807-1612
Transaction Type	Mortgage
Record Updated	Apr 14, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	008084-218
Date	Apr 1, 2022
Book Page	8084/218
Instrument	3037

Lender

Name	CITIZENS BANK
Type	Bank

Agreement

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

March 2017: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Mar 17, 2017
Property Address	4 NORTH ST, COS COB, CT 06807-1612
Document Number	007216-199
Book / Page	7216 / 199
Transaction Type	Transfer
Record Updated	Jan 31, 2022

Transaction

Tax	$85.93
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Tax Assessment & Valuation

The 2025 property tax bill for 4 North St was $9,939.

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	$9,939.00	$804,160 Land $429,310 Building $374,850	$562,912 Land $300,517 Building $262,395
2024	$9,939.00 (+6.22%)
2023	$9,357.00 (+0.92%)	$804,160 (-) Land $429,310 Building $374,850
2022	$9,272.00	$804,160 Land $429,310 Building $374,850

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

Flood

FEMA maps place 4 North St in Zone X, an area of minimal flood risk, within 500 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 500 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 4 North St 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

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