TERTIUS, OLDFIELD ROAD, MAIDENHEAD, SL6 1UA - £960,000

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

TERTIUS is a large extended detached house of 186m², built sometime between 1950 and 1966, which could now be worth an estimated £1,012,570. It was last sold for £960,000 in May 2024, which was around 12% below the average May 2024 detached price in the Windsor and Maidenhead local authority area. The most recent EPC inspection was February 2015, where the current energy rating was D, and the potential energy rating was C.

TERTIUS Sold Prices

Land registry data shows two sales for TERTIUS since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Windsor and Maidenhead local authority area for the corresponding sale date. Both of the two TERTIUS sales were for below 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
2024 10 MAY	£960,000	£1,089,830	12% below HPI
2015 12 AUG	£725,000	£849,338	15% below HPI

TERTIUS Price Paid vs. HPI Average

The below graph shows the average detached house price in the Windsor and Maidenhead local authority area over time, sourced from the HPI. The two TERTIUS sales from August 2015 and May 2024 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 2015 sale was for 15% below the HPI. So the extrapolation line tracks at 15% below the HPI over time, until the May 2024 sale, where it rises to 12% below the HPI. The line then continues to track at 12% below the HPI.

What might TERTIUS be worth now?

TERTIUS might now be worth an estimated £1,012,570.

This is based on house price inflation of 5.5%, between May 2024 and February 2025, for detached houses, in the Windsor and Maidenhead local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 5.5% inflationary increase is applied to the most recent sale price for TERTIUS of £960,000 on 10th May 2024. For the value to have increased from £960,000 to £1,012,570 over the one year and three months to February 2025, the following assumptions must hold true:

• The value of TERTIUS has moved in line with the HPI for detached houses in the Windsor and Maidenhead local authority area.
• The May 2024 sale price of £960,000 represented a fair market value for the property.
• The size, condition, and specification of TERTIUS has not materially changed since May 2024.

How Large is TERTIUS?

TERTIUS is 186m², which includes two extensions, according to the EPC inspection conducted in February 2015. This puts it in the largest 30% of detached houses houses in Maidenhead, based on EPC data. The below chart shows the distribution of detached houses houses by size in Maidenhead, and where TERTIUS lies on this distribution: 77% of detached houses houses are smaller than TERTIUS, and 22% of houses are larger. Note that EPC data is not available for all properties in Maidenhead.

TERTIUS: Plot and Title Map

TERTIUS sits on a plot of roughly 0.202 of an acre, or 818m². The below map shows the location of TERTIUS, 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 TERTIUS). 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 TERTIUS?

TERTIUS is located on OLDFIELD ROAD in MAIDENHEAD, in the SL6 postcode district. The below map shows the position of TERTIUS on OLDFIELD ROAD.