Corrections Policy
We will publish something wrong eventually. This is what happens when we do.
Last updated: July 2026
Our commitment
A site that publishes hundreds of numbers about a fast-moving market will get some of them wrong. Pretending otherwise would be the bigger failure. Our commitment is simple: report an error and we will verify it, fix it, and date the fix — we will not quietly edit and move on.
How to report an error
Email [email protected] with as much of this as you have:
- The page URL. If it is a calculator, copy the whole address bar — your inputs are in the URL and reproduce your exact case.
- What is wrong, and what you believe the correct value or method is.
- Where your number comes from — a dealer quote, an invoice, a published price list, a government schedule. Your city or district matters enormously for a price.
- For a calculation error: what you entered and what you expected.
You do not need a source to report a suspicion. "This looks far too low for Kolkata" is a perfectly useful message and we will go and check.
What happens next
- We reproduce it. For calculation errors, on the live page with your inputs. For rate disputes, against the sources currently cited.
- We re-verify against the source protocol. A replacement number needs the same standard as the original — at least two independent sources, unit checked, verified month recorded. See How We Source Rates.
- We fix it at the root. Rates live in one place, so a correction updates every page and every calculator that uses that number at the same moment. There is no possibility of fixing a figure on one page and leaving it wrong on another.
- We date it. The corrected rate carries its new verified month, and where the substance of a page changes, the page's modified date changes with it.
- We reply. Including when we conclude the original figure was right — with the reasoning, so you can push back.
How fast
A clear factual error in a published number is the highest-priority work on this site and gets fixed as soon as it is verified — usually within a few days. Method disagreements take longer, because changing a formula means re-verifying every worked example that depends on it. Either way we will tell you where it stands rather than leaving you wondering.
What counts as an error
These are errors and we will fix them:
- A rate outside the band that current evidence supports.
- A rate whose sources no longer say what we claim they say.
- A unit mistake, a conversion mistake, or arithmetic that does not match the published formula.
- An assumption stated on the page that the code does not actually apply.
- A worked example that does not reproduce through the live calculator.
- A stale date — a number still displaying an old verified month past its review date.
These are not errors, though they are still worth telling us about:
- Your local price sits outside our national band. Regional spread in India is genuinely huge, and our ranges are explicitly national. This is exactly the information we need to build city-level rates, so please do send it — it just isn't a mistake on our part.
- A contractor's quote differs from our estimate. Quotes price your specific drawings, site and finishes; our range is a planning band.
- A thumb rule does not fit an unusual build type we already flag as out of scope, such as AAC-block or steel-frame construction.
Systematic errors
If a correction reveals a problem with the method rather than a single number — a source we should never have trusted, a thumb rule that does not hold in a whole region — we fix the method and re-check everything downstream of it, not just the page you reported. That work takes longer and it is the reason we ask where your number came from.
Credit
If you would like acknowledgement for a correction, say so and we will credit you by name on the relevant page. If you would rather not be named, we will not name you. Either way, corrections from readers are the cheapest and most valuable quality control this site has.