Parcels

Learn about the parcel data available in Transect.

Transect maintains a license to nationwide parcel data from Regrid. The data includes 158+ million parcel boundaries and records covering 100% of America, plus associated parcel data like owner name, address, and more. 

Parcel boundaries and/or attributes are not available in all counties. To learn more about where parcel coverage is available, view Regrid's Parcel Coverage Map.

In this article, we’ll review:

Accessing Parcel Data

In Reports

Within a Report, Parcel Data can be accessed by selecting Supporting Docs & Resources > Setting > Parcels.

In the Map

Within the Map, Parcel Data can be accessed within the Parcels layer. First, select the toggle to activate the layer, then the parcel data will be displayed on the map.


  1. Dropdown/Toggle: Use the dropdown to populate additional layer information. Select the toggle to activate the layer on the Map.
  2. Opacity: Drag the radio dial to modify the opacity of the layer to your preference.
  3. Risk at a Glance: Adds a colored risk rating to each parcel (e.g. red, yellow, green).
  4. Label: This adds labels to the Map that shows the owner, acreage, and buildable area.
  5. Description: Provides details about this layer, including where the information is sourced from.

If you’re looking for parcels that meet a specific criteria (e.g. size, buildable area, or owner), you can use the Parcel Filter.

Frequently Asked Questions

  • Where does the County data come from?
    Regrid sources data directly from counties, states, municipalities and their designated vendors wherever possible.

  • When was the data last updated?
    On average 94% of the parcels have been refreshed in the last 12 months, with most of those in the last 6 months. Regrid targets approximately 600 counties that are generally fast growing and populous for more frequent updates. This document provides the counties that were most recently updated.

  • What do the attributes in the data mean?
    Regrid cleans and converts all county parcel data into a common schema–Click here for a definition of each parcel attribute.

  • Some counties are missing from the dataset but are labeled as “Available”, what does that mean?
    Available county data means that Regrid has confirmed the data is available from the County, but for some reason they did not obtain the data. The usual reason is cost from the County, some Counties price their parcel data very high.

  • What if the data looks incorrect?
    Transect provides to our customers the parcel data exactly as we receive it from Regrid. We are happy to try to help you interpret the data, but we cannot always successfully troubleshoot errors that you find as the data is directly sourced from a third party. For more FAQs, please visit Regrid's website here.

  • Why do the parcel value fields (‘parval’) not look the way I expect?
    The parcel value related fields are all directly from the county assessor's data. They populate as directly from the assessor attributes as possible our 'improvements value' (improvval), 'land value' (landval), 'parcel value' (parval), 'ag value' (agval) and 'parcel valuation method' (parvaltype) attributes. However, while those are the most common value related attributes, every county has their own definition for those attributes. We suggest visiting the county's website or calling the assessor's office directly to better understand those values. If, after contacting the county it appears we have an error in what values we have in those attribute fields, please send an email to help@regrid.com.

  • Why do the parcel numbers (apn, pin, etc) not look the way I expect?
    County parcel numbers (‘parcelnumb’) can be inconsistent due to the use of different formats (such as punctuation and zeros) and can change over time. Regrid retains any identification number attributes as ‘County Custom Columns’ to match up the data with County data directly, even if the parcel number field is not the only identification number used by the County.
    To understand parcel numbering, we suggest contacting the county assessor's office or visiting their website. If you find errors in your data after checking with the county, please email help@regrid.com.

  • Do you have land use codes?
    Yes, we offer land use codes for parcels where available. You can find them under Settings > Parcels in the "Land Use" column. A land use code key is also available for reference here.

  • Why are some parcels duplicated or stacked parcels?
    County parcel data is often inconsistent due to various methods used to record multiple owners on a single property. The most common methods include stacking identical parcels, creating puzzle-piece shaped parcels, or overlaying condo parcels on top of a ground parcel. While most counties assign unique parcel numbers to each stacked parcel, some reuse numbers, requiring additional identification fields. Despite these complexities, the dataset typically includes all associated addresses for each owner. For more information, check out this article.