New York City property record for 21 Cornelia St, Brooklyn, NY 11221
| Property Type | Triplex |
|---|---|
| Details | 3,000 sqft · built 1910 |
| Lot Size | 0.046 acres (2,000 sqft) |
| Owner | Individual Name on File |
| Last Sale | $366,195 (Jan 2007) |
| Tax Bill | $7,342 (2025) |
| Deeds & Mortgages | Jul 2022 Mortgage |
| APN | 03373-0052 |
| Primary APN | 03373-0052 |
|---|---|
| Alternative APNs |
|
| Units | 6 Units |
|---|---|
| Stories | 3 Stories |
| Building Area | 3,000 sqft Living Area |
| 1st Floor Area | 1,000 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1910 |
| Architectural Style | Triplex |
| Lot Area | 2,000 sqft (0.046 acres) |
| Lot Dimensions | 100 ft deep x 20 ft wide |
| Account Number | 3-03373-0052 |
|---|---|
| Street Address | 21 CORNELIA ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11221-6702 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | R6 |
| Legal Block | 3373 |
| Legal Lot Number | 52 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 39700 |
21 Cornelia St, a triplex, is owned and occupied by an individual who bought it in January 2007.
Source: New York City records, as of May 4, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21 CORNELIA ST, BROOKLYN, NY 11221-6702 |
| 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.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 23, 2007 · Amount on File |
| Deed Sale | Jan 23, 2007 · Amount on File |
| Prior Sale | Jul 6, 2001 |
| Deed Document Number | 200742861 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 21 CORNELIA ST, BROOKLYN, NY 11221-6702 |
| Transaction Type | Mortgage |
| Record Updated | Sep 13, 2023 |
| Name | Verified Name |
|---|
| Document Number | 0000300845 |
|---|---|
| Date | Jul 28, 2022 |
| Instrument | 2022000300845 |
| Name | CITIBANK, N.A. |
|---|---|
| Address | 1000 TECHNOLOGY DR, O FALLON, MO 63368 |
| Amount | Amount on Record |
|---|
The 2025 property tax bill for 21 Cornelia St was $7,342.
Source: New York City assessment roll, as of May 4, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Kings County |
| Municipality | New York City |
| Unified School District | New York City Department Of Education (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $68,820 Land $13,800 Building $55,020 | $1,147,000 Land $230,000 Building $917,000 | |
| 2025 | $7,342.00 | ||
| 2023 | $5,552.00 (+16.54%) Additional exemption filed | $70,740 (+12.72%) Land $13,800 Building $56,940 | $1,179,000 (+12.72%) Land $230,000 Building $949,000 |
| 2022 | $4,764.00 Additional exemption filed | $62,760 Land $13,800 Building $48,960 | $1,046,000 Land $230,000 Building $816,000 |
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.
FEMA has no flood map on file for 21 Cornelia St; 2 flood insurance policies are in force nearby.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Policies | 2 in force |
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.
The area around 21 Cornelia 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 | NEW YORK CITY SYSTEM serves 8,271,000 people · EPA ID NY7003493 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2025 |
| Lead | 10 ppb (2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Uncovered finished water reservoir currently in violation since Feb 2017 |
| 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 1,611 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Optimum Cable · Fiber in parts of the area | 940 / 35 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Starry.
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