Groton Town property record for 253 Thames St, Groton, CT 06340
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,025 sqft · built 1885 |
| Lot Size | 0.11 acres (4,792 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $4,027 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | GROT M:168918217095 |
| Primary APN | GROT M:168918217095 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 1,025 sqft Living Area |
| Year Built | Built 1885 |
|---|---|
| Effective Year Built | Effective 1885 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 4,792 sqft (0.11 acres) |
| Deck Area | Deck Area |
| Loading Dock | Loading Dock |
| Boat Access | Boat Access |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 168918217095 |
|---|---|
| Street Address | 253 THAMES ST |
| City | GROTON |
| State | CT |
| Zip | 06340-3955 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | WBR |
| Jurisdiction | GROTON CT |
| Township / Civil Division | GROTON |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 702400 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Groton Bank Historic District listed 1983 · 120 contributing resources · NRIS 83001287 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Groton 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 | Individual Name on Record |
|---|---|
| Mailing Address | 257 THAMES ST, GROTON, CT 06340-3955 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Groton Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Groton Town |
| Municipality | Groton City |
| Unified School District | Groton School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $4,027.00 | $139,300 (-) Land $90,545 Building $48,755 | $97,510 Land $63,381 Building $34,129 |
| 2024 | $4,027.00 (+12.05%) | ||
| 2023 | $3,594.00 (+3.39%) | $139,300 (-) Land $69,650 Building $69,650 | |
| 2022 | $3,476.00 | $139,300 Land $69,650 Building $69,650 |
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 September 20, 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone VE, 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 | GROTON UTILITIES serves 30,200 people · EPA ID CT0590011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2024 |
| Lead | 1 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 85 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Xfinity Cable | 2,000 / 250 |
| Breezeline Cable | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
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