East Haven Town property record for 80 William St, East Haven, CT 06512
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 3.5 ba · 2,138 sqft · built 1953 |
| Lot Size | 0.28 acres (12,197 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $7,577 (2025) |
| Deeds & Mortgages | Dec 2025 Mortgage Aug 2020 Refinance |
| Flood Zone | Zone X (minimal risk) |
| APN | C0132000 |
| Primary APN | C0132000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 2,138 sqft Living Area |
| Basement Area | 1,744 sqft |
| Unfinished Basement | 1,744 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 12,197 sqft (0.28 acres) |
| Garage Type | Basement |
| Parking Spaces | 3 Parking Spaces |
| Deck Area | Deck Area |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Sewer | Septic |
| Account Number | C0132000 |
|---|---|
| Street Address | 80 WILLIAM ST |
| City | EAST HAVEN |
| State | CT |
| Zip | 06512-4131 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R-1 |
| Legal Block | 915 |
| Legal Lot Number | 12 |
| Jurisdiction | EAST HAVEN CT |
| Township / Civil Division | EAST HAVEN |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 180101 |
80 William St, a duplex, is owned and occupied by an individual.
Source: East Haven Town records, as of September 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 80 WILLIAM ST, EAST HAVEN, CT 06512-4131 |
| 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.
| Date | Document |
|---|---|
| Dec 4, 2025 | Deed of Trust, Mortgage · Conventional Mortgage KEY BANK NA |
| Aug 19, 2020 | Deed of Trust, Mortgage · Stand-Alone Refinance KEY BANK NA |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | EAST HAVEN CT |
| Property Address | 80 WILLIAM ST, EAST HAVEN, CT 06512-4131 |
| Transaction Type | Mortgage |
| Record Updated | Dec 24, 2025 |
| Name | Verified Name |
|---|
| Document Number | 002856-752 |
|---|---|
| Date | Dec 4, 2025 |
| Book Page | 2856/752 |
| Instrument | 6661 |
| Name | KEY BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 349 Months |
| Due | Jan 1, 2055 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | EAST HAVEN CT |
| Property Address | 80 WILLIAM ST, EAST HAVEN, CT 06512-4131 |
| Transaction Type | Mortgage |
| Record Updated | Mar 4, 2021 |
| Name | Verified Name |
|---|
| Document Number | 2733-287 |
|---|---|
| Date | Aug 19, 2020 |
| Book Page | 2733/287 |
| Name | KEY BANK NA |
|---|---|
| Type | Bank |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
| Term | 349 Months |
| Due | Sep 1, 2049 |
The 2025 property tax bill for 80 William St was $7,577.
Source: East Haven Town assessment roll, as of September 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | East Haven Town |
| Unified School District | East Haven School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $7,577.00 | $226,590 Land $70,350 Building $156,240 | $323,700 Land $100,500 Building $223,200 |
| 2024 | $7,577.00 (+7.17%) | ||
| 2023 | $7,070.00 | $226,590 (-) Land $70,350 Building $156,240 | |
| 2022 | $7,070.00 | $226,590 Land $70,350 Building $156,240 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 80 William St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective January 25, 2026
| 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.
The area around 80 William St has no burnable land within ember reach, so its wildfire risk is not rated.
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 | REGIONAL WATER AUTHORITY serves 418,900 people · EPA ID CT0930011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2024 |
| 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 336 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| GoNetspeed Fiber | 2,000 / 2,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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