One hundred million dollars will not go very far towards building housing for the homeless in Los Angeles where a 3 bedroom house costs a million dollars by itself. Santorini, Greece style high density apartments are the way to go, with swimming pools and tennis courts, and you can paint the housing bright cheerful colors like they do in Greece, etc. Then you can add public libraries, etc.
And remember that Battle Mountain, Nevada, has land for $1,000 per acre, for one hundred million dollars you could buy one hundred thousand acres. You could build a lot of housing on one hundred thousand acres. Compared to only one hundred 3 bedroom houses in California. Battle Mountain, Nevada, is a great value for the money.
Salute,
Tony V.