Corrections Policy

Cost data changes — materials, labor, and incentives especially. If you find a figure that looks outdated or wrong, tell us and cite what you think it should be, ideally with a source.

How to report

Use the Contact page, include the exact page URL, and describe what's wrong.

What we do

• We check the reported figure against the cited source and any new source you provide.
• If the figure is outdated or wrong, we update it and refresh the “last reviewed” date.
• If we disagree, we'll explain why the current figure and source stand.