Nassau County and Hempstead Town property record for 521 Cornwell Ave, Malverne, NY 11565
| Property Type | Single Family Home |
|---|---|
| Details | 2.5 ba · 2,010 sqft · built 1973 |
| Lot Size | 0.14 acres (6,100 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $552,000 (Feb 2017) |
| Tax Bill | $10,305 (2025) |
| Deeds & Mortgages | Oct 2017 Transfer Feb 2017 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 35-231-00-0124 |
| Primary APN | 35-231-00-0124 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,010 sqft Living Area |
| Gross Area | 2,250 sqft |
| 1st Floor Area | 644 sqft |
| Game Room | Game Room |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1973 |
| Architectural Style | Raised Ranch |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Material | Other |
| Lot Area | 6,100 sqft (0.14 acres) |
| Lot Dimensions | 101 ft deep x 66 ft wide |
| Garage Type | Attached |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Frame Porch |
|---|---|
| Porch Area | 18 sqft |
| Deck Area | 116 sqft |
| Patio Area | 299 sqft |
| Balcony Area | 21 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 35231 01240 |
|---|---|
| Street Address | 521 CORNWELL AVE |
| City | MALVERNE |
| State | NY |
| Zip | 11565-1322 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TOWN #1 SCH DIST 013 |
| Legal Subdivision | VALLEY STREAM CENTRE SEC 2 |
| Legal Block | 231 |
| Legal Lot Number | 124 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | HEMPSTEAD |
| Census Block Group | 6 |
| Census Block | 6006 |
| Census Tract | 410100 |
Source: Nassau County and Hempstead Town records, as of June 17, 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 | 521 CORNWELL AVE, MALVERNE, NY 11565-1322 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Oct 23, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Feb 6, 2017 | Bargain and Sale Deed, Transfer PARAGON ABSTRACT INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 6, 2017 · Amount on Record |
| Deed Sale | Feb 6, 2017 · Amount on Record |
| Prior Sale | Aug 10, 1999 · Amount on Record |
| Deed Document Number | 201713208 |
| Deed Book / Page | 13470 / 429 |
| Last Transfer Date | Oct 17, 2017 |
| Transfer Doc | 2017105888 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Oct 23, 2017 |
| Property Address | 521 CORNWELL AVE, MALVERNE, NY 11565-1322 |
| Document Number | 0135770134 |
| Book / Page | 013577 / 000134 |
| Instrument Date | Oct 17, 2017 |
| Instrument | 105888 |
| Transaction Type | Transfer |
| Record Updated | Nov 29, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 521 CORNWELL AVE MALVERNE NY 115651322, MALVERNE, NY 11565-1322 |
| Document Type | Bargain and Sale Deed |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Feb 6, 2017 |
| Property Address | 521 CORNWELL AVE, MALVERNE, NY 11565-1322 |
| Document Number | D134700429 |
| Book / Page | D13470 / 0429 |
| Instrument Date | Jan 25, 2017 |
| Instrument | 201700013208 |
| Transaction Type | Transfer |
| Record Updated | May 14, 2021 |
| Title Company | PARAGON ABSTRACT INC |
| Amount | Amount Recorded |
|---|---|
| Tax | $2,208.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 521 CORNWELL AVE, 521, MALVERNE, NY 11565-1322 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 50 WEST BLVD, EAST ROCKAWAY, NY 11518-2517 |
Source: Nassau County and Hempstead Town assessment roll, as of June 17, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | Hempstead Town |
| Municipality | Malverne Village |
| Elementary School District | Valley Stream Union Free School District 13 (PK - 06) |
| Secondary School District | Valley Stream Central High School District (07 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $605 (+4.13%) Land $226 Building $379 | $605,000 (+4.13%) | |
| 2025 | $10,305.00 (-0.68%) | $581 (-3.97%) Land $217 Building $364 | $581,000 (-3.97%) |
| 2023 | $10,376.00 Additional exemption filed | $605 Land $226 Building $379 | $605,000 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective April 5, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 in force |
| Nearby Flood Claims | 2 (2011–2014) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Oct 2014 · other causes |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; 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 | LIBERTY UTILITIES NEW YORK - LYNBROOK private · serves 220,000 people · EPA ID NY2902835 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2023 |
| Lead | 5 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Corrosion control Jul 2025 |
| 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 882 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
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