Stonington Town property record for 23 Denison Ave, Mystic, CT 06355
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 2,197 sqft · built 1920 |
| Lot Size | 0.24 acres (10,454 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $6,501 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | STON M:174 B:13 L:6 |
| Primary APN | STON M:174 B:13 L:6 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 2,197 sqft Living Area |
| Gross Area | 4,410 sqft |
| 1st Floor Area | 1,008 sqft |
| Attic | Attic |
| Attic Area | 1,050 sqft |
| Basement Area | 1,008 sqft |
| Unfinished Basement | 1,008 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 10,454 sqft (0.24 acres) |
| Heating System | Steam |
|---|---|
| Heating Fuel | Oil |
| Account Number | 410800 |
|---|---|
| Street Address | 23 DENISON AVE |
| City | MYSTIC |
| State | CT |
| Zip | 06355-2808 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | RH-10 |
| Legal Block | 13 |
| Legal Lot Number | 6 |
| Jurisdiction | STONINGTON CT |
| Township / Civil Division | STONINGTON |
| Census Block Group | 3 |
| Census Block | 3031 |
| 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 | 23 DENISON AVE, MYSTIC, CT 06355-2808 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| 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 | $6,501.00 | $325,400 (-) Land $72,900 Building $252,500 | $227,780 Land $51,030 Building $176,750 |
| 2024 | $6,501.00 (+3.98%) | ||
| 2023 | $6,252.00 (+37.71%) | $325,400 (+81.99%) Land $72,900 Building $252,500 | |
| 2022 | $4,540.00 | $178,800 Land $76,500 Building $102,300 |
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 September 20, 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 11.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
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 | 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 342 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 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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