Berkeley is 50% more expensive than Fairfield.
When comparing Berkeley, CA and Fairfield, CA, the overall cost of living indices are 251 and 167 respectively (national median = 100). Rent is $64/month cheaper in Berkeley, saving renters about $768/year.
Median household income is $6,237/year higher in Berkeley. Home values also differ significantly — the median in Berkeley is $1,351,100 compared to $592,500 in Fairfield.
Both cities share the same state tax structure since they are in California.
Berkeley vs Fairfield — common questions
Other cost of living comparisons for Berkeley and Fairfield