Stonington Town property record for 12 Denison Ave, Mystic, CT 06355
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 2,931 sqft · built 1860 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $6,911 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | STON M:174 B:12 L:7 |
| Primary APN | STON M:174 B:12 L:7 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,931 sqft Living Area |
| Gross Area | 5,844 sqft |
| 1st Floor Area | 1,071 sqft |
| Attic | Attic |
| Attic Area | 1,104 sqft |
| Basement Area | 567 sqft |
| Unfinished Basement | 567 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1860 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | Conventional |
| Exterior Material | Aluminum/Vinyl |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 10,890 sqft (0.25 acres) |
| Garage Type | Attached |
| Deck Area | Deck Area |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Oil |
| Account Number | 430900 |
|---|---|
| Street Address | 12 DENISON AVE |
| City | MYSTIC |
| State | CT |
| Zip | 06355-2810 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RH-10 |
| Legal Block | 12 |
| Legal Lot Number | 7 |
| Jurisdiction | STONINGTON CT |
| Township / Civil Division | STONINGTON |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 705300 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Mystic Bridge Historic District listed 1979 · 345 contributing resources · NRIS 79002671 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Stonington 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 | 12 DENISON AVE, MYSTIC, CT 06355-2810 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Husband and Wife |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Stonington Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Stonington Town |
| Unified School District | Stonington School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $6,911.00 | $345,900 (-) Land $66,300 Building $279,600 | $242,130 Land $46,410 Building $195,720 |
| 2024 | $6,911.00 (+3.99%) | ||
| 2023 | $6,646.00 (+5.68%) | $345,900 (+39.64%) Land $66,300 Building $279,600 | |
| 2022 | $6,289.00 | $247,700 Land $54,700 Building $193,000 |
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 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 97.2% 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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | AQUARION-MYSTIC private · serves 10,788 people · EPA ID CT1370011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 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 | 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 185 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 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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