Berkeley and Carlsbad have a similar cost of living.
When comparing Berkeley, CA and Carlsbad, CA, the overall cost of living indices are 251 and 253 respectively (national median = 100). Rent is $551/month cheaper in Berkeley, saving renters about $6,612/year.
Median household income is $30,768/year higher in Carlsbad. Home values also differ significantly — the median in Berkeley is $1,351,100 compared to $1,156,900 in Carlsbad.
Both cities share the same state tax structure since they are in California.
Berkeley vs Carlsbad — common questions
Other cost of living comparisons for Berkeley and Carlsbad