1031 is only for business property. Specifically doesn’t apply to primary residence. But CA Prop 60 allows Californians over 55 to downsize their house and mai

1031 is only for business property. Specifically doesn’t apply to primary residence. But CA Prop 60 allows Californians over 55 to downsize their house and maintain the same tax basis they had before the exchange, which very well might apply here, although IIRC it has weird county by county restrictions.