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.
57 STEPHENS FIRS is a very small extended semi-detached house of 94m², built sometime between 1950 and 1966, which could now be worth an estimated £409,322. It was last sold for £322,500 in January 2016, which was around 2% above the average January 2016 semi-detached price in the West Berkshire local authority area. The most recent EPC inspection was June 2015, where the current energy rating was D, and the potential energy rating was B.
Land registry data shows five sales for 57 STEPHENS FIRS since 1st January 1995. The below table shows the price paid for the five sales, along with the average semi-detached price in the West Berkshire local authority area for the corresponding sale date. Most of the five 57 STEPHENS FIRS 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 |
|---|---|---|---|
2016 29 JAN | £322,500 | £317,522 | 2% above HPI |
2006 14 AUG | £235,000 | £219,516 | 7% above HPI |
2000 17 MAR | £137,000 | £123,916 | 11% above HPI |
1996 3 MAY | £67,500 | £71,750 | 6% below HPI |
1995 27 JAN | £58,000 | £71,347 | 19% below HPI |
The below graph shows the average semi-detached house price in the West Berkshire local authority area over time, sourced from the HPI. The five 57 STEPHENS FIRS sales between January 1995 and January 2016 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 2006 sale was for 7% above the HPI. So the extrapolation line tracks at 7% above the HPI over time, until the January 2016 sale, where it falls to 2% above the HPI. The line then continues to track at 2% above the HPI.

57 STEPHENS FIRS might now be worth an estimated £409,322.
This is based on house price inflation of 26.9%, between January 2016 and July 2025, for semi-detached houses, in the West Berkshire local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 26.9% inflationary increase is applied to the most recent sale price for 57 STEPHENS FIRS of £322,500 on 29th January 2016. For the value to have increased from £322,500 to £409,322 over the eight years and six months to July 2025, the following assumptions must hold true:
57 STEPHENS FIRS is 94m², which includes one extension, according to the EPC inspection conducted in June 2015. This puts it in the smallest 20% of semi-detached houses houses in Mortimer, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Mortimer, and where 57 STEPHENS FIRS lies on this distribution: 15% of semi-detached houses houses are smaller than 57 STEPHENS FIRS, and 84% of houses are larger. Note that EPC data is not available for all properties in Mortimer.

57 STEPHENS FIRS sits on a plot of roughly 0.130 of an acre, or 528m². The below map shows the location of 57 STEPHENS FIRS, 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 57 STEPHENS FIRS). 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.

57 STEPHENS FIRS is located in MORTIMER, in the RG7 postcode district. The below map shows the position of No. 57 on STEPHENS FIRS.

Most recent sales first: