In Bolinas, where bluff erosion is a matter of urgent concern, a proposal to build a new home in an exclusive neighborhood has drawn scrutiny and objections from neighbors. On Friday, the California Coastal Commission rejected an effort to block the project, which would double the size of an existing home on the Little Mesa, despite concerns that it would exacerbate erosion on the dramatic cliffs above Bolinas Lagoon.
Susie Tompkins and Mark Buell, longtime…