15, SLAVE HILL, HADDENHAM, AYLESBURY, HP17 8AY - £745,000

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

15 SLAVE HILL is a large extended detached house of 145m², built sometime between 1976 and 1982, which could now be worth an estimated £804,574. It was last sold for £745,000 in September 2021, which was around 3% below the average September 2021 detached price in the Buckinghamshire local authority area. The most recent EPC inspection was May 2021, where the current energy rating was D, and the potential energy rating was B.

15 SLAVE HILL Sold Prices

Land registry data shows three sales for 15 SLAVE HILL since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Buckinghamshire local authority area for the corresponding sale date. All of the three 15 SLAVE HILL 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
2021 1 SEP	£745,000	£770,451	3% below HPI
2004 31 AUG	£415,000	£421,894	2% below HPI
1997 24 JUL	£174,950	£189,081	7% below HPI

15 SLAVE HILL Price Paid vs. HPI Average

The below graph shows the average detached house price in the Buckinghamshire local authority area over time, sourced from the HPI. The three 15 SLAVE HILL sales between July 1997 and September 2021 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 2004 sale was for 2% below the HPI. So the extrapolation line tracks at 2% below the HPI over time, until the September 2021 sale, where it falls to 3% below the HPI. The line then continues to track at 3% below the HPI.

What might 15 SLAVE HILL be worth now?

15 SLAVE HILL might now be worth an estimated £804,574.

This is based on house price inflation of 8%, between September 2021 and December 2024, for detached houses, in the Buckinghamshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 8% inflationary increase is applied to the most recent sale price for 15 SLAVE HILL of £745,000 on 1st September 2021. For the value to have increased from £745,000 to £804,574 over the two years and nine months to December 2024, the following assumptions must hold true:

• The value of 15 SLAVE HILL has moved in line with the HPI for detached houses in the Buckinghamshire local authority area.
• The September 2021 sale price of £745,000 represented a fair market value for the property.
• The size, condition, and specification of 15 SLAVE HILL has not materially changed since September 2021.

How Large is 15 SLAVE HILL?

15 SLAVE HILL is 145m², which includes two extensions, according to the EPC inspection conducted in May 2021. This puts it in the largest 40% of detached houses houses in Haddenham, based on EPC data. The below chart shows the distribution of detached houses houses by size in Haddenham, and where 15 SLAVE HILL lies on this distribution: 65% of detached houses houses are smaller than 15 SLAVE HILL, and 35% of houses are larger. Note that EPC data is not available for all properties in Haddenham.

15 SLAVE HILL: Plot and Title Map

15 SLAVE HILL sits on a plot of roughly 0.118 of an acre, or 476m². The below map shows the location of 15 SLAVE HILL, 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 15 SLAVE HILL). 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 15 SLAVE HILL?

15 SLAVE HILL is located in HADDENHAM, in the HP17 postcode district. The below map shows the position of No. 15 on SLAVE HILL.