If you want second homes to be used productively, just allow folks to list them on AirBnb for planned short-term rental. Long-term rentals are a total non-starter politically for second homes, since you obviously can't ethically throw out someone who regards that rental space as their home. But short-term is actually fine.
As for larger homes, people should be allowed to live in there as larger, extended family groups - a common pattern in non-Anglo cultures. Ban "single family" restrictions since they amount to unconscionable discrimination against such reasonable living arrangements.
As for larger homes, people should be allowed to live in there as larger, extended family groups - a common pattern in non-Anglo cultures. Ban "single family" restrictions since they amount to unconscionable discrimination against such reasonable living arrangements.