If you care about housing, walkability, transit and all of the positive attributes that go along with these things then I believe the single most important thing you can do in the near term at the local level is make positively sure that Council Member Pio Renteria is re-elected in District 3. I'm already told that ANC is ramping up for Susana Almanza.
You can give up to $350/individual and up to $700 as a couple but no matter what give something (link below). You can also volunteer--they need folks walking door to door talking to D3 voters.
https://secure.actblue.com/donate/piorenteria
Even if you maxed out for the general election you can now do so again for the runoff (I did on Wednesday). Even though he did very well in the general election, only 2% shy of winning outright, recall that nearly the same thing happened in District 10 two years ago. We must raise $$ and Get Out The Vote!!! Reach out to all your folks in District 3 and have them get ready to vote and to bring a neighbor!
Early vote Nov 29-Dec 7 and Election Day Dec 11.