New Haven City property record for 421 Winthrop Ave, New Haven, CT 06511
| Details | 4 bd · 4 ba · 2,897 sqft · built 1920 |
|---|---|
| Lot Size | 0.166 acres (7,252 sqft) |
| Owner | Company Name on File |
| Last Sale | $46,500 (May 1996) |
| Tax Bill | $9,805 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 319 0280 02700 |
| Primary APN | 319 0280 02700 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 10 Rooms |
| Units | 4 Units |
| Stories | 3 Stories |
| Building Area | 2,897 sqft Living Area |
| Gross Area | 5,786 sqft |
| 1st Floor Area | 1,440 sqft |
| Basement Area | 1,440 sqft |
| Unfinished Basement | 1,440 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Exterior Material | Aluminum/Vinyl |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 7,252 sqft (0.166 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Oil |
| Account Number | 319 0280 02700 |
|---|---|
| Street Address | 421 WINTHROP AVE |
| City | NEW HAVEN |
| State | CT |
| Zip | 06511-3135 |
| Property Category | Other |
| Property Type | Unknown |
| Local Zoning Code | RM2 |
| Legal Block | 280 |
| Legal Lot Number | 2700 |
| Jurisdiction | NEW HAVEN CT |
| Township / Civil Division | NEW HAVEN |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 140900 |
421 Winthrop Ave is owned by a company that bought it in May 1996.
Source: New Haven City records, as of October 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | PO BOX 3265, NEW HAVEN, CT 06515-0365 |
| Owner Type | Company |
| Vesting | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 15, 1996 · Amount on File |
| Deed Sale | May 15, 1996 · Amount on File |
| Deed Book / Page | 4996 / 143 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 421 Winthrop Ave was $9,805, up 1.4% from the year before.
Source: New Haven City assessment roll, as of September 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision / Municipality | New Haven City |
| Unified School District | New Haven School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $9,805.00 (+1.43%) | $245,350 (-) Land $49,350 Building $196,000 | |
| 2025 | $9,667.00 | $245,350 Land $49,350 Building $196,000 | $350,500 Land $70,500 Building $280,000 |
| 2024 | $9,667.00 (+5.92%) | ||
| 2023 | $9,127.00 (-6.42%) | $245,350 (-) Land $49,350 Building $196,000 | |
| 2022 | $9,753.00 | $245,350 Land $49,350 Building $196,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 421 Winthrop Ave 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 421 Winthrop Ave 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 628 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 |
May also be available: T-Mobile.
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