The Tarrant Appraisal District uses fairly good comparables. For the data about your home they use the permits you filed for or that the builder filed for. If the figure is too high the owner came in and argued. I think the figure on TAD is much better than Zillow and those other sites. Although I would not use TAD or Zillow or any other web based site to value a home I was buying or a home I was selling.
Pretty accurate would be how I would describe a very careful market analysis or a professional appraisal. They are estimates of what an informed buyer would pay an informed seller in an arms length transaction.
Hope this helps.
Welcome to D/FW!
No, they're really not usually accurate. What are you trying to accomplish? Are you looking for the value on a specific home? In a neighborhood? Do you have your eye on something?
Let me know if there's anything we can do to help.
Thanks so much,
Getting a Comparative Market Analysis (CMA) from a real estate agent .
Getting an appraisal from a professional appraiser.
Visiting the house (whenever possible).
Contact my office if I can assist in comping a property of your interest
If you are looking for a property below market value happy to work with you