Reproducible by design

From today’s income to one selected housing year

Housing Time Machine keeps public source data separate from private user inputs, translates current income with CPI-U, and compares it with the official annual median new-home price for the completed year you choose.

Calculation sequence

Six inspectable steps

Rounded only for display
  1. Choose eligible records.1972–2025 require reviewed full-year price, rate, and CPI-U observations. Missing inputs make a record ineligible; they never become zero.
  2. Select a completed year.The chosen year controls the result. The calculator does not assign a fixed “best” match.
  3. Translate current income.Historical income equals current annual income multiplied by historical CPI-U and divided by the current CPI-U anchor.
  4. Calculate gross-income years.The official annual median new-home sale price is divided by the CPI-adjusted gross annual income. The result is a ratio, not years to save, buy, or pay off a home.
  5. Draw a current wealth comparator.The browser randomly selects one person from a dated, reviewed Forbes top-20 snapshot. No income or year affects who is drawn, and the visitor can request another draw.
  6. Use the same dollar basis.The current net-worth estimate is multiplied by selected-year CPI-U and divided by the current CPI-U anchor, then divided by the selected year’s median new-home price. The active anchor is the June 2026 CPI-U observation, one month earlier than the July 27 wealth snapshot. Calculations retain full precision and round only for display.

Comparison eligibility

Complete, partial, or unavailable

◆ Complete

1972–2025

Available for selection because all required annual observations pass review.

△ Partial

1971 and 2026

Visible as dated context, but not offered as completed-year selections.

Unavailable

1963–1970 rate

Freddie Mac PMMS did not yet exist. No rate is invented or converted to zero.

Baseline exclusions

What the result does not model

Audit the evidence

Every input has a public source record