Generally speaking, after years of high appreciation rates, annual 2019 Bay Area median home prices went down a little bit, went up a little bit or basically remained unchanged as compared to 2018. Marin is one of the markets that ticked down, though the message is more mixed when looking at individual city price trends.
For 2020, economist Ken Rosen at UC Berkeley has said he expects the Bay Area median price to remain basically flat, within a general range of up or down 2% - in other words, similar to what happened last year. We can’t predict the future, but that doesn’t sound unreasonable, and happily avoids the sensationalism of many other media-grabbing forecasts.