Greenwich Town property record for 20 Thomas St, Cos Cob, CT 06807
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 3 ba · 1,364 sqft · built 1950 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $500,000 (Jan 2019) |
| Tax Bill | $6,916 (2025) |
| Deeds & Mortgages | Apr 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-1489S |
| Primary APN | 08-1489S |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,364 sqft Living Area |
| Basement Area | 240 sqft |
| Unfinished Basement | 240 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1960 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 6,970 sqft (0.16 acres) |
| Garage Type | Basement |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Oil |
| Account Number | 386/098 |
|---|---|
| Street Address | 20 THOMAS ST |
| City | COS COB |
| State | CT |
| Zip | 06807-2146 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-6 |
| Legal Block | 1489/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 10202 |
Source: Greenwich Town records, as of June 25, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 20 THOMAS ST, COS COB, CT 06807-2146 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 30, 2019 · Amount on Record |
| Deed Sale | Jan 30, 2019 · Amount on Record |
| Deed Document Number | 2019570 |
| Deed Book / Page | 7471 / 312 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | GREENWICH CT |
| Property Address | 20 THOMAS ST, COS COB, CT 06807-2146 |
| Transaction Type | Mortgage |
| Record Updated | May 13, 2021 |
| Name | Verified Name |
|---|
| Document Number | 7875-211 |
|---|---|
| Date | Apr 27, 2021 |
| Book Page | 7875/211 |
| Instrument | 4362 |
| Name | GUARANTEED RATE INC |
|---|---|
| Type | Non-Lending Institution |
| Type | Balloon Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | May 1, 2051 |
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 |
|---|---|---|---|
| 2025 | $6,916.00 | $559,580 (-) Land $441,280 Building $118,300 | $391,706 Land $308,896 Building $82,810 |
| 2024 | $6,916.00 (+6.22%) | ||
| 2023 | $6,511.00 (+0.91%) | $559,580 (-) Land $441,280 Building $118,300 | |
| 2022 | $6,452.00 | $559,580 Land $441,280 Building $118,300 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 96% of the US · lower than 94% of Connecticut |
|---|---|
| Wildfire Likelihood | Under 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: 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 |
| 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.
Source: FCC Broadband Data Collection, based on 455 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: T-Mobile.
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