---
id: "us_nyc_bbl"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["realestate", "geo"]
country: ["US"]
langs: ["en"]
quality: 75
url: "https://registry.apicrafter.io/datatype/us_nyc_bbl"
---

# New York City borough, block and lot (BBL) (`us_nyc_bbl`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Ten-digit number of a tax lot in New York City: one digit for the borough (1 Manhattan, 2 Bronx, 3 Brooklyn, 4 Queens, 5 Staten Island), five for the tax block and four for the lot. City open data often stores it as a decimal number, as in 3002777501.0.

- Parent datatype: `usparcelnumber`
- Personal data (PII): no
- Categories: Real estate (realestate), Geographic identifiers (geo)
- Countries: United States (US)
- Languages: English (en)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[1-5]\d{9}(?:\.0+)?$
```

## Examples

- `1000010010` — Tax lot in Manhattan
- `3002777501` — Tax lot in Brooklyn
- `3001280001.00000000000` — Stored as a decimal number
- `6000010010` (invalid example) — No borough 6

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/Borough,_Block_and_Lot>

## Quality

Score 75/100. Missing: mapping (Wikidata, Schema.org, ...), translation, detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/us_nyc_bbl.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/US/realestate/us_nyc_bbl.yaml>