The basis (value) is the lesser amount, what you paid for it or the value when placed into service.
The 2019 value was probably less than the 2024 value, so you probably will use your 2019 cost.
If you use your 2029 cost, it would be what you paid.
If you use the 2024 value, it would be what is listed on the tax bill. If that is the case, yes, the taxable value.
Use whichever is less.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"