>> Club houses? What are we talking about here? Country clubs? Our society is largely devoid of the fraternal organizations that colored 18th and 19th century social life, and the social isolation of not having any 'third places' to go is in fact one of principal complaints about suburbia.

I think they literally mean "Club house" -- the shared services center for the housing development. High-rises often have them, large developments have them.

In NYC, our high-rise had a reading room, yoga room, gym, entertainment center, as well as a paved playing area for building residents inside building premises. People met each other regularly at these places and socialized. This is very common (minus the paved playing area, which is rare.)

In the burbs we also have most of these, and also tennis courts and a pool.

Many of these served as a "Third Place" for residents, especially once you have kids because it isnt as easy to hang out elsewhere. Unlike previous centuries, I'm constantly on my phone or on call explicitly or implicitly, at least in my profession, so social clubs seem unrealistic, though I know the wealthy folks go there regularly.