Our question is about the suspicion: is the meeqaat called Wadi al-Sail attached to the houses in Taif?

Answer

In the name of Allah, yes, it is attached to the houses, but what is meant by the houses is that the ones which were in the era of the Prophet (PBUH). To identify them, one may ask the residents of the region, they know better than others. Allah is the all-Guide.