Independent and evidence-led
A housing comparison you can inspect
Housing Time Machine is an independently maintained educational research tool. It is not affiliated with or endorsed by the agencies and publishers whose data it cites.
Purpose
One narrow question, with visible limits
The site compares the national annual median sales price of new houses sold with a visitor's CPI-adjusted gross household income. It does not represent existing homes, local markets, mortgage qualification, a complete ownership budget, or financial advice.
Editorial and data review
Public numbers must survive a source check
Housing inputs come from direct Census/HUD, Freddie Mac, and BLS material. Current wealth estimates come from a dated, manually reviewed Forbes top-20 snapshot. Each active housing release is immutable, hash-verified, schema-checked, and tested against selected official reference values before publication.
Automated tools assist with implementation and verification, but they are not accepted as a numerical source. Missing or unpublished values remain unavailable and never become zero.
Inspect source vintages and limitations · Review formulas and exclusions
Corrections
Corrections create a new reviewed release
A source revision, calculation correction, or material wording change is reviewed against the direct evidence, covered by regression tests, and recorded as a new release decision. Historical snapshot files are not silently overwritten.
A public corrections inbox is not currently offered. This page will name the channel before one is opened; the site will not publish an unmonitored address or imply support that does not exist.
Independence
Attribution is not endorsement
Agency and publisher names identify the evidence behind a claim. Housing Time Machine does not use their logos, claim their approval, or present a source relationship as sponsorship.