Cost data changes, and so does our understanding of it. When a figure or a claim in a guide turns out to be inaccurate, here's exactly what happens.
Most corrections come from our own quarterly review cycle. Some come from readers — tradespeople, contractors, and homeowners who spot a figure that doesn't match what they're seeing on real jobs. You can report an issue through our contact page.
We check a reported figure against our current sources before changing anything. If a single report contradicts our data, we investigate rather than change the figure immediately — cost variation between individual jobs is normal and doesn't always mean our range is wrong.
Once a correction is confirmed, we update the relevant calculator or guide directly. Substantive corrections — a materially different cost range, a factual error in a guide — are noted with an updated date on the article. Minor copy fixes are made without a separate note.
We won't quietly inflate or deflate a range in response to pressure from an advertiser or any commercial party. Every correction is assessed on the underlying data alone.