Parkmead (Newell Avenue, west of 680 - another "old" Walnut Creek neighborhood)
http://www.parkmead.org

Rancho San Miguel
(Across Ygnacio from Heather Farm, Eichler homes, also interested in historic preservation)
http://www.ranchosanmiguel.org

Old Mountain View Neighborhood Association
(a description of how historic preservation was attempted in another city)
http://www.omvna.org/newsletter16-6.html#tool