From the UC Berkeley Urban Displacement Project:

 

 

There is an abundance of data to indicate that the Sonoma County housing situation in the low and moderate income range will worsen, according to a new study from UC Berkeley.

One key point from the study:

Neighborhoods with rail stations, historic housing stock, an abundance of market-rate developments and rising housing prices are especially in danger of losing low-income households.

More in-depth reading:

The Future of Displacement by Karen Chapple

The Urban Displacement Project

More gentrification, displacement in Bay Area forecast by Kathleen Maclay