Generally yes. Prop 19 lets homeowners 55 and older move their property-tax basis to a more expensive replacement home, with a blended assessment on the price difference. In broad strokes: - Equal or lesser value: your existing tax basis carries straight over, and you keep your low assessment. - More expensive home: you keep the old basis on the old home's value and add the difference at the new assessed level. Using round, illustrative numbers: sell for $500,000 and buy for $1,000,000, and you carry the old basis on the first $500,000 while only the $500,000 step-up gets assessed at current levels. Prop 19 has conditions worth verifying for your situation, including how many times the benefit can be used, the timing window between selling and buying, and how the replacement value is measured. This is a tax matter with real dollars attached, so confirm the current Prop 19 provisions with your county assessor or a CPA before you make the move.