# Multnomah County, OR property data

> Multnomah County, OR parcel data: 281,892 parcels with tax assessor records, building permits, zoning, historic designations, building codes, via API, MCP server and vector tiles.

Source: https://www.parceled.ai/coverage/oregon/multnomah-county  
Publisher: Parceled (https://www.parceled.ai)  
Updated: 2026-10-30

Parceled covers 281,892 parcels in Multnomah County, OR, with tax assessor records, building permits, zoning, historic designations, building codes and hail history available through one API and MCP server. Tax assessor attributes are present for 100% of parcels (owner names on 100% of those records, year built on 90%).

- **Parcels:** 281,892
- **County FIPS:** 41051
- **Snapshot:** October 30, 2026

## What property data is available for Multnomah County?

| Dataset | Multnomah County |
| --- | --- |
| Parcel boundaries | 281,892 parcels |
| Tax assessor records | 284,284 records (100% of parcels) |
| Owner name and mailing address | 100% of assessor records |
| Market or assessed value | 98% of assessor records |
| Year built | 90% of assessor records |
| Last sale date | 59% of assessor records |
| Building permits | 1,292,424 permits since 1996, latest July 22, 2026 |
| Roofing permits | 5,891 |
| Zoning | 7 zoning jurisdictions |
| Buildable-area screens | Yes |
| Historic designations | 667 |
| Adopted building codes | 1 jurisdiction |
| Hail history (radar) | Yes, every county in the contiguous US |

## How do I query Multnomah County property data?

Bulk-search every parcel in the county with `search_properties` using `state: "OR"` and `county: "051"` (the county FIPS code 41051), or look up one address with `search_parcels`. Check any single property for free with `check_availability`.

```json
{
  "name": "count_properties",
  "arguments": { "state": "OR", "county": "051" }
}
```

## Frequently asked questions

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

Search the address on the Multnomah 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).