15C, HIGH STREET, THAME, OX9 2BZ - £1,400,000

Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources

15C HIGH STREET is a very large extended detached house of 265m², built sometime between 1967 and 1975, which could now be worth an estimated £1,859,721. It was last sold for £1,400,000 in September 2015, which was around 136% above the average September 2015 detached price in the South Oxfordshire local authority area. The most recent EPC inspection was March 2012, where the current energy rating was D, and the potential energy rating was C.

15C HIGH STREET Sold Prices

Land registry data shows two sales for 15C HIGH STREET since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the South Oxfordshire local authority area for the corresponding sale date. Both of the two 15C 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
2015 25 SEP	£1,400,000	£592,684	136% above HPI
2002 9 AUG	£425,000	£327,471	30% above HPI

15C HIGH STREET Price Paid vs. HPI Average

The below graph shows the average detached house price in the South Oxfordshire local authority area over time, sourced from the HPI. The two 15C HIGH STREET sales from August 2002 and September 2015 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 August 2002 sale was for 30% above the HPI. So the extrapolation line tracks at 30% above the HPI over time, until the September 2015 sale, where it rises to 136% above the HPI. The line then continues to track at 136% above the HPI.

What might 15C HIGH STREET be worth now?

15C HIGH STREET might now be worth an estimated £1,859,721.

This is based on house price inflation of 32.8%, between September 2015 and December 2024, for detached houses, in the South Oxfordshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 32.8% inflationary increase is applied to the most recent sale price for 15C HIGH STREET of £1,400,000 on 25th September 2015. For the value to have increased from £1,400,000 to £1,859,721 over the eight years and nine months to December 2024, the following assumptions must hold true:

• The value of 15C HIGH STREET has moved in line with the HPI for detached houses in the South Oxfordshire local authority area.
• The September 2015 sale price of £1,400,000 represented a fair market value for the property.
• The size, condition, and specification of 15C HIGH STREET has not materially changed since September 2015.

How Large is 15C HIGH STREET?

15C HIGH STREET is 265m², which includes three extensions, according to the EPC inspection conducted in March 2012. This puts it in the largest 10% of detached houses houses in Thame, based on EPC data. The below chart shows the distribution of detached houses houses by size in Thame, and where 15C HIGH STREET lies on this distribution: 98% of detached houses houses are smaller than 15C HIGH STREET, and 2% of houses are larger. Note that EPC data is not available for all properties in Thame.

15C HIGH STREET: Plot and Title Map

15C HIGH STREET sits on a plot of roughly 0.354 of an acre, or 1,434m². The below map shows the location of 15C 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 15C 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.

Where is 15C HIGH STREET?

15C HIGH STREET is located in THAME, in the OX9 postcode district. The below map shows the position of No. 15C on HIGH STREET.