The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.
121 HIGH STREET is a large extended terraced house of 145m², built sometime before 1900, which could now be worth an estimated £654,162. It was last sold for £319,000 in November 2009, which was around 139% above the average November 2009 terraced price in the Milton Keynes local authority area. The most recent EPC inspection was February 2009, where the current energy rating was E, and the potential energy rating was D.
Land registry data shows three sales for 121 HIGH STREET since 1st January 1995. The below table shows the price paid for the three sales, along with the average terraced price in the Milton Keynes local authority area for the corresponding sale date. All of the three 121 HIGH STREET sales were for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2009 20 NOV | £319,000 | £133,680 | 139% above HPI |
2001 27 SEP | £250,000 | £75,645 | 230% above HPI |
1998 22 MAY | £153,000 | £47,752 | 220% above HPI |
The below graph shows the average terraced house price in the Milton Keynes local authority area over time, sourced from the HPI. The three 121 HIGH STREET sales between May 1998 and November 2009 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the September 2001 sale was for 230% above the HPI. So the extrapolation line tracks at 230% above the HPI over time, until the November 2009 sale, where it falls to 139% above the HPI. The line then continues to track at 139% above the HPI.

121 HIGH STREET might now be worth an estimated £654,162.
This is based on house price inflation of 105.1%, between November 2009 and July 2025, for terraced houses, in the Milton Keynes local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 105.1% inflationary increase is applied to the most recent sale price for 121 HIGH STREET of £319,000 on 20th November 2009. For the value to have increased from £319,000 to £654,162 over the sixteen years and four months to July 2025, the following assumptions must hold true:
121 HIGH STREET is 145m², which includes two extensions, according to the EPC inspection conducted in February 2009. This puts it in the largest 30% of terraced houses houses in Olney, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Olney, and where 121 HIGH STREET lies on this distribution: 73% of terraced houses houses are smaller than 121 HIGH STREET, and 27% of houses are larger. Note that EPC data is not available for all properties in Olney.

121 HIGH STREET sits on a plot of roughly 0.060 of an acre, or 242m². The below map shows the location of 121 HIGH STREET, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 121 HIGH STREET). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

121 HIGH STREET is located in OLNEY, in the MK46 postcode district. The below map shows the position of No. 121 on HIGH STREET.

Most recent sales first: