You have to be a home owner to be a member, but you do not have to be a home owner or a renter to play there.
It is a challenging course and well maintained, I have played it many times.
So I guess access to the gym and BBall courts are members only.
In case you want to purchase a home there, the cheapest one currently for sale is $1,239,000.
But - there is a lot for sale for $140,000 but it's been for sale for 912 days so red flags are waving. Maybe you could get a deal if it is unbuildable or something like that.