There are many Senior Communities to choose that are close to Benicia and Vallejo. Federal Law provides for two types of senior citizen housing 1) housing intended for 55+ with at least one person 55 or older occupying the home 2) Homes strictly for 62+ and no one is allowed to live there that is under 62, unless they were a resident when this law was adopted on 9/13/1988. This is just a brief description of senior housing. Also if you are 55 or over and looking to downsize, you may be able to retain your lower tax base when selling & buying within the same county.
Always check with your county assessor for the most up to date information.
See the summary of Senior Communities where you can purchase a home and lifestyle to fit your age and needs!