> just west of woodside there's hundreds of square miles of completely undeveloped land The terrain in that area would make it quite difficult to build dense h

> just west of woodside there's hundreds of square miles of completely undeveloped land The terrain in that area would make it quite difficult to build dense housing there - it's even steeper than the very hilly area that Woodside itself is built on. It's not that it can't be done, but it is far more expensive (think about the cost of adding infrastructure like water, sewer, etc), compared to building housing in an already developed area, like infill development on land previously zoned only for commercial purposes.