Inflation Adjusted Prices
Announcing the new feature launch of Inflation Adjusted Prices, based on CPI data provided by ONS.
Inflation-adjusted prices are now live across the site.
Wherever possible, historical domain sale prices are now displayed with a second value that reflects their purchasing power in today's terms. This gives a clearer view of long-term market trends and the real value of older sales.
Why?
A domain sold for £10,000 in 2006 isn’t equivalent to £10,000 today. That’s obvious — but until now, everything was shown in nominal terms. For anyone looking at decade-old sales and trying to understand value over time, this was misleading.
Now you can see both:
- The original sale price at the time
- The inflation-adjusted equivalent based on UK Consumer Price Index (CPI) data
How It Works
- Data is based on UK CPI indices from the Office for National Statistics
- The CPI dataset is refreshed daily and cached indefinitely
- Adjustments are calculated automatically when historical sales are rendered
- There’s no manual input or editorial weighting — just the raw index math
Limitations
- CPI updates are monthly. We don’t adjust for intra-month granularity.
- Inflation-adjusted prices will vary slightly if the CPI index is updated after the sale month.
- Some historic sales with missing or ambiguous dates may not be adjusted, although I've yet to see this issue.
What's Next
The core logic is solid, but this will evolve. Upcoming changes may include:
- Clearer tooltips or visual separation between original and adjusted prices
- API access to adjusted values
- A toggle to hide/show adjusted prices
- A user configurable option to show CPI adjusted prices by default, or not display it at all.
If you're relying on the site for historical market insights, this should make it easier to compare values meaningfully — not just numerically.