Selling primary residence in CA and buying another

[Karla Simmons]

My husband and I considering selling our primary residence in California and buying a smaller home of lesser value since we are nearing retirement. Does anyone know if we have to pay taxes on the difference in values if the two homes? My parents ran into that about 30 years ago but I’m not sure that still stands. We have lived in our current home over 20 years and would not have to pay capital gains if we just sold the home.

Thank you