Sources and methodology.
Every number on this site has a source and a date. Here's where they come from.
Market data
Redfin Data Center. LA figures are rolling three-month windows by zip code (Mar 2026 to May 2026). Destination figures are monthly city-level medians (May 2026). The "typical LA County zip" is the median of the medians across 254 LA County zip codes with recent sales.
Migration data
U.S. Census Bureau, American Community Survey 2024 state-to-state migration flows. Counts are estimates of people who lived in California one year earlier, with margins of error.
Tax and legal references
- IRS Publication 523 (selling your home)
- California FTB Publication 1016 and Form 593 (real estate withholding)
- California FTB Publication 1031 (residency)
- California Board of Equalization: Prop 19
- City of LA Office of Finance: Measure ULA
- Texas revenue department
- Nevada revenue department
- Arizona revenue department
- Washington revenue department
- Florida revenue department
- Oregon revenue department
- New York revenue department
- Colorado revenue department
- Tennessee revenue department
- North Carolina revenue department
- Idaho revenue department
- Georgia revenue department
- Utah revenue department
The calculator
The calculator multiplies the median price per square foot for your zip code and home type by your square footage (or uses the zip's median sale price), then shows a range of plus or minus 8% to 18% depending on how many recent sales there were. It's an illustration, not an appraisal. See the disclaimer.
Photos
Landscape and skyline photography via Unsplash, used under the Unsplash license.