# Middlesex County, NJ property data

> Middlesex County, NJ parcel data: 275,600 parcels with tax assessor records, building permits, historic designations, building codes, via API, MCP server and vector tiles.

Source: https://www.parceled.ai/coverage/new-jersey/middlesex-county  
Publisher: Parceled (https://www.parceled.ai)  
Updated: 2026-10-30

Parceled covers 275,600 parcels in Middlesex County, NJ, with tax assessor records, building permits, historic designations, building codes and hail history available through one API and MCP server. Tax assessor attributes are present for 76% of parcels (owner names on 0% of those records, year built on 100%).

- **Parcels:** 275,600
- **County FIPS:** 34023
- **Snapshot:** October 30, 2026

## What property data is available for Middlesex County?

| Dataset | Middlesex County |
| --- | --- |
| Parcel boundaries | 275,600 parcels |
| Tax assessor records | 208,379 records (76% of parcels) |
| Owner name and mailing address | 0% of assessor records |
| Market or assessed value | 0% of assessor records |
| Year built | 100% of assessor records |
| Last sale date | 109% of assessor records |
| Building permits | 145,540 permits since 1990, latest July 7, 2026 |
| Roofing permits | Not yet |
| Zoning | Not yet |
| Buildable-area screens | Yes |
| Historic designations | 69 |
| Adopted building codes | 1 jurisdiction |
| Hail history (radar) | Yes, every county in the contiguous US |

## How do I query Middlesex County property data?

Bulk-search every parcel in the county with `search_properties` using `state: "NJ"` and `county: "023"` (the county FIPS code 34023), or look up one address with `search_parcels`. Check any single property for free with `check_availability`.

```json
{
  "name": "count_properties",
  "arguments": { "state": "NJ", "county": "023" }
}
```

## Frequently asked questions

### How do I find who owns a property in Middlesex County?

Search the address on the Middlesex County assessor's website, or query Parceled's `search_parcels` for owner name and mailing address. See [how to find a property owner by address](https://www.parceled.ai/guides/how-to-find-property-owner-by-address).