Are you thinking this is some pattern that needs a thread for each agency you use? If not then ask TER to merge this new thread into the earlier thread you started and it will simplify things for anyone searching in the future.

So here's another 2 thoughts.
1) Someone is watching you and you might want to consider why that might be.
2) What was it, 6-7 years ago in LA that some guy was out to shut this activity down. Was showing up at the known hosting locations, taking pictures or people and license plats (or so was claimed) and trying to get RWI and then threaten the guy.  Perhaps someone else is not doing something like that in the BA (or the guy moved and started again). I think he had some personal gripe and view pretty much any sex work infratructure as bad human trafficking.

If it were me, I think I would just ping the booker when I scheduled next and ask them if they know about this. If like some have said they do this type of thing no harm done; likely they will deny but they might be more discreet or avoid being out when you're leaving. Alternatively, they might not know anything about it and want to know so they can start looking for other locations or at least alternative paths in and out. (Which is something you might consider. Might not be any options - only one entry door but generally there are more exits one can find post-sessions.