I made a zoning map of SF yesterday. A lot of our city is sprawl, too: one house, one driveway, one garage per lot.
We can get two birds with a stone by building housing: make our city more walkable and beautiful, and also alleviate the housing shortage .
Want to support infill, upzoning, and want to beat the NIMBYs? Consider joining SF Yimby.
It's a small group of ppl who care a lot about this, they're smart and effective, and many of these local issues are right on the bubble around 50% support in low turnout elections. This means, with a bit of activism, you can swing the outcome.