Go to Alberta and you will see similar structures already in practice. Massage parlours in Edmonton and Calgary are all full service spas. There is NO question in a hobbiest's mind as to whether he will get laid in a massage parlour. He will. They are brothels. They pay fees to the city in order to provide non-therapeutic massage services and the ladies working there all have to be registered. When there are police raids in Edmonton and Calgary, it is not because sex is taking place; it is because they police were tipped off that there were unregistered girls working at a particular spa.
Registration ensures the ladies are of age, and since the registration has to be done in person at a city licensing office, it allows officials to confirm that the girls aren't exploited or trafficked, that they are becoming MPAs of their own volition. Ditto for escorts. Yes, a woman in Edmonton can get an escort licence. The City will give her permission to escort out of her apartment. Her apartment!! The more reputable ones will put their licence number in their ads so hobbyists don't have to fear a raid during their session, since the girl is legal.
So, the cops know that there is sex taking place in the MPs around town, but they also know that the ladies are safe, that there is recourse should a crime take place on the premises, and that the spa owners have a huge incentive to keep things clean and crime free (they could lose their licence if they don't).
FS at a spa in either city runs from $250 - $400 for an hour. Incalls are $200 and up.
Yes, this is in Alberta. Its not as bible-belt as you think! This is actually a progressive approach, n'est ce pas?? Check PERB for details and reviews.