The following discussion is based on Hamilton, 1968,
There are few references to Tate's Fort, and no accounts of its construction. Captain John Carr (?-1773), tells us that
The implication is that both Houston's Fort and Tate's Fort were substantial affairs, housing multiple families. This, in turn, implies that it was at least stockaded. Hamilton was able to find no evidence that Tate's Fort was garrisoned by the militia, and it probably depended on the local families for its defense.
Captain Carr's statement quoted above indicates that Tate's Fort was built in 1776, when Indian hostilities were resumed following Dunmore's War. The only other reference to Tate's Fort is Mrs. Scott's testimony to the Reverend Shane (Draper MSC 11 CC 224 (verify).
Hamilton reminds us that this was in the spring of 1780 and her family emigrated to Kentucky in 1784.