A locality in Aylesbury.
Sold house prices in Grendon Underwood have an overall average of £389,004, based on all 217 residential sales on record — drawn from every recorded UK house sale.
Medians over the most recent 12 months of all UK property sales (to June 2026). Median is used, not mean — it isn't skewed by the odd very-high sale.
Across Grendon Underwood, the median sold price over the 12 months to June 2026 was £398,000 — it rose 34.9% on the year before. That reflects 11 recorded sales. Detached homes are the priciest at a median of £603,000, while terraced homes are the most affordable at £317,000. Over the past year, semi-detached homes moved the most (+26.5%).
These figures track the median of prices actually paid, not a like-for-like index. A move can reflect a change in what sold — more new homes, or a different mix of house types and sizes — as much as any change in what a given home is worth.
| Type | Median | 12-month change | Sales |
|---|---|---|---|
| Detached | £603,000 | -0.5% | 5 |
| Semi-detached | £370,000 | +26.5% | 3 |
| Terraced | £317,000 | +15.3% | 3 |
Change compares the median for the last 12 months with the 12 months before.
How these figures are calculated. Year-on-year change compares the median sold price over the most recent 12 months of data with the 12 months before it. We use the median, not the average, so a few unusually high or low sales don't distort it. Because HM Land Registry data lags — sales take time to be registered — the most recent month or two are provisional and tend to revise upward. Figures track the mix of what actually sold, so they are not a like-for-like index. The same method is used across this site, so an area's figure here matches its ranking in investment trends.
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