How Much Money Can We Save by Downsizing After the Kids Leave?

Downsizing savings come from two separate sources: reduced ongoing costs and one-time equity freed up from the price difference between homes.
Ongoing cost reductions
Moving from a larger to a meaningfully smaller home typically reduces property taxes, utility bills, and maintenance costs by roughly 30-50%, since these expenses scale closely with square footage and lot size.
One-time equity gains
The price difference between selling a larger home and buying a smaller one, after accounting for selling costs, typically 8-10% of the sale price for agent commissions and closing costs, represents equity that can be redirected toward retirement savings, investments, or other financial goals.
Calculating the full financial picture
Adding the ongoing annual savings to the one-time equity gain gives a complete financial picture of downsizing's benefit, one that often reveals a more significant total impact than looking at either factor alone.
Accounting for the cost of the move itself
Moving costs, real estate commissions, moving company fees, and any updates or repairs needed to prepare the new home, should be subtracted from the projected savings to arrive at a realistic net benefit figure, rather than assuming the full calculated savings are immediately and entirely captured.

