Point layer tied to tax appraisal district accounts, located at centroid of parcel (where account to parcel relationship could be determined).

Authoritative Data from Dallas DBI (EGIS)
Dynamically Updated by Dallas Servers

Homepage: https://gis.dallascityhall.com

Disclaimer
The accuracy is not to be taken / used as data produced by a Registered Professional Land Surveyor for the State of Texas. For this level of detail, supervision and certification of the produced data by a Registered Land Surveyor for the State of Texas would be required. "This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries."
(Texas Government Code § 2051.102)
https://gis.dallascityhall.com/documents/COD_DataDisclaimer.pdf