Unless the property is sold, Prop 13 caps the increase at no more than 2% annually. So if you have owned a home for more than 10 years, the tax basis is probabl

Unless the property is sold, Prop 13 caps the increase at no more than 2% annually. So if you have owned a home for more than 10 years, the tax basis is probably way lower than market value -- particularly in a place like Marin County.