The practical framework
Families should pressure-test childcare, school commute, housing size, healthcare, groceries, activities, and support networks. A cheaper city can be worse if childcare is scarce or school logistics require more driving.
Compare the weekly routine. Where are school, work, church, grocery stores, doctors, and activities? A city that looks affordable on a spreadsheet may create time costs that strain the household.
Support matters. Moving away from grandparents, trusted babysitters, or community can increase paid childcare and reduce flexibility. Put a rough dollar value on that support before declaring the move cheaper.
What to do next
Run your numbers through the tools, then replace assumptions with quotes. The goal is not to predict every dollar perfectly; it is to find the expensive surprises before they become commitments.