Greenwich Town property record for 539 Cognewaugh Rd, Cos Cob, CT 06807
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 5.5 ba · 5,966 sqft · built 1955 |
| Lot Size | 1.08 acres (47,045 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,575,000 (Nov 2007) |
| Tax Bill | $23,737 (2026) |
| Deeds & Mortgages | Sep 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-3457 |
| Primary APN | 08-3457 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 5,966 sqft Living Area |
| Basement Area | 3,166 sqft |
| Unfinished Basement | 3,166 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 47,045 sqft (1.08 acres) |
| Garage Type | Basement |
| Parking Spaces | 1 Parking Space |
| Pool Type | Pool with Hot Tub/Spa |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Account Number | 355/051 |
|---|---|
| Street Address | 539 COGNEWAUGH RD |
| City | COS COB |
| State | CT |
| Zip | 06807-1112 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RA-2 |
| Legal Block | 3457 |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 10202 |
539 Cognewaugh Rd is owned and occupied by two individuals who bought it in November 2007.
Source: Greenwich Town records, as of October 21, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 539 COGNEWAUGH RD, COS COB, CT 06807-1112 |
| 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.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 29, 2007 · Amount on File |
| Deed Sale | Nov 29, 2007 · Amount on File |
| Prior Sale | Apr 30, 2001 · Amount on File |
| Deed Book / Page | 5527 / 321 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | GREENWICH CT |
| Property Address | 539 COGNEWAUGH RD, COS COB, CT 06807-1112 |
| Transaction Type | Mortgage |
| Record Updated | Sep 30, 2021 |
| Name | Verified Name |
|---|
| Document Number | 7971-253 |
|---|---|
| Date | Sep 13, 2021 |
| Book Page | 7971/253 |
| Instrument | 10546 |
| Name | PEOPLES UNITED BANK |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Oct 1, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.63% |
| Type Change Date | Oct 1, 2031 |
| Index | Other |
The 2026 property tax bill for 539 Cognewaugh Rd was $23,737, up 2.9% from the year before.
Source: Greenwich Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Greenwich Town |
| Unified School District | Greenwich School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $23,737.00 (+2.91%) | $2,344,440 (+22.38%) Land $708,680 Building $1,635,760 | $4,451,710 (+231.96%) |
| 2025 | $23,066.00 | $1,915,760 Land $531,020 Building $1,384,740 | $1,341,032 Land $371,714 Building $969,318 |
| 2024 | $23,066.00 (+5.71%) | ||
| 2023 | $21,821.00 (+0.98%) | $1,915,760 (-) Land $531,020 Building $1,384,740 | |
| 2022 | $21,610.00 | $1,915,760 Land $531,020 Building $1,384,740 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 539 Cognewaugh Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective November 28, 2025
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 539 Cognewaugh Rd is low, with 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 93% of the US · lower than 86% of Connecticut |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 68 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber | 980 / 880 |
4G LTE only, no 5G reported
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