In collaboration with stakeholders from across Texas, TNRIS created a statewide standardized GIS land parcel schema. This format of land parcel data consists of the most commonly utilized information as determined by the land parcel committee. The data contributed from county appraisal districts or their service providers were translated into this common schema and are now available on the TNRIS DataHub.
Land parcels are boundaries that have associated information such as property owner, land use, value, and location attributes. This property information is recorded and maintained at the county level in Texas at local appraisal districts. It is then used by public entities to make informed decisions on community planning, development, or emergency preparation and response.
In August 2019, an extension of the statewide parcel study was published to evaluate the existence of GIS parcel data and barriers to conversion. The report found that nearly all Texas appraisal districts now maintain a GIS parcel layer or are in the process of converting. It includes recommendations of 1) how TNRIS can facilitate local GIS conversion and 2) how to continue success of the land parcel program.
of 254 land parcel GIS datasets
are now available in a common schema
Launch DataHub See available datasets in the map below. To download the parcel data visit the DataHub.
This timeline documents past events and estimates future milestones. As milestones are met, this timeline will be updated. Please check each county for the most recent version of data.
This iterative program flow will occur throughout the year. At no one time will there be a completed or final version of data as each data source has varying update schedules. Please check each county for the most recent version of data.
Texas State Agencies make extensive use of Land Parcel data for all types of operations and applications.
General Land Office (GLO)
Texas Division of Emergency Management (TDEM)
Texas Department of Transportation (TXDOT)
Health and Human Services Commission (HHSC)
Texas Water Development Board (TWDB)
Texas Animal Health Commission (TAHC)
Texas Commission on Environmental Quality (TCEQ)
Texas Parks and Wildlife Department (TPWD)
Commission on State Emergency Communications (CSEC)
Department of Public Safety (DPS)
A geographic land parcel is a spatial reference to tabular information of a property regarding ownership, land use, legal description, ownership, etc. from the Computer Assisted Mass Appraisal (CAMA) software of an appraisal district.
The land parcels are in shapefile and geodatabase format and require a geographic information system (GIS) software for viewing. Software to view this data is not provided by TNRIS. Other files provided include metadata and conversion file.
The data were transformed into the TNRIS land parcel schema. TNRIS facilitated a land parcel committee to discuss the data needs of stakeholders across Texas. Land parcels have a large quantity of data stored in Computer Assisted Mass Appraisal (CAMA) and a lowest common denominator of details were agreed upon for the TNRIS land parcel schema.
TNRIS received the data from the appraisal districts or their vendors “as-is.” If data are missing, the data were not shared with the request for information. Over time, we hope to get as many of the TNRIS land parcel schema attributes as possible. If additional information is needed, please contact the appraisal district. A directory of appraisal districts is located on the Texas Comptroller of Public Accounts website.
These geographic land parcel data are created by county appraisal districts or their third party vendor. TNRIS compiles and transforms these data for statewide distribution and does not edit the geometry of this data. A directory of appraisal districts is located on the Texas Comptroller of Public Accounts website.
TNRIS collects these data to allow end users to acquire statewide land parcel data in one location at no cost. These geographic land parcel data are created by appraisal districts or their third party vendor to supplement the appraisal process with a visual representation of property. They are not survey grade and should not be used for legal purposes.
TNRIS will attempt to refresh annually from each appraisal district or their third party vendor. The refresh rate will vary across the state. Some counties may refresh multiple times within one year. The year and month of the land parcel dataset is included in the file name as YYYYMM.
The purpose of this initiative is to provide statewide land parcel data in one location at no cost. Yes, this data may sometimes be acquired through appraisal districts, their 3rd party vendor, or commercial vendors. More current data and greater volume of information may be available from them as compared to the no cost TNRIS statewide version. A directory of appraisal districts is located on the Texas Comptroller of Public Accounts website.
There are 254 counties and 253 appraisal districts in Texas (Potter and Randall counties have a joint office).
There is no state mandate for a standardized land parcel schema in Texas. Therefore, the individual appraisal district attributes are dictated by their business needs or based on their third party standards.
These geographic land parcel data are created by county appraisal districts or their third party vendor. TNRIS compiles these data for statewide distribution and does not edit the geometry of this data. A directory of appraisal districts is located on the Texas Comptroller of Public Accounts website.
Not all counties are available for download from TNRIS. We continue to work with appraisal districts to provide as many county land parcel datasets as possible. As they are available, they will be posted online for download and the availability map updated. A directory of appraisal districts is located on the Texas Comptroller of Public Accounts website.
Contact TNRIS with any further questions regarding this program and someone from StratMap will get in touch with you.Contact Us