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.
18 THE FLATS is a large extended detached house of 160m², built sometime between 1976 and 1982, which could now be worth an estimated £727,239. It was last sold for £499,950 in November 2013, which was around 1% below the average November 2013 detached price in the Hart local authority area. The most recent EPC inspection was March 2013, where the current energy rating was C, and the potential energy rating was B.
Land registry data shows four sales for 18 THE FLATS since 1st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Hart local authority area for the corresponding sale date. All of the four 18 THE FLATS 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 |
|---|---|---|---|
2013 27 NOV | £499,950 | £506,956 | 1% below HPI |
2007 5 SEP | £430,000 | £463,461 | 7% below HPI |
1999 9 SEP | £217,000 | £227,224 | 4% below HPI |
1995 16 NOV | £115,500 | £145,069 | 20% below HPI |
The below graph shows the average detached house price in the Hart local authority area over time, sourced from the HPI. The four 18 THE FLATS sales between November 1995 and November 2013 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 2007 sale was for 7% below the HPI. So the extrapolation line tracks at 7% below the HPI over time, until the November 2013 sale, where it rises to 1% below the HPI. The line then continues to track at 1% below the HPI.

18 THE FLATS might now be worth an estimated £727,239.
This is based on house price inflation of 45.5%, between November 2013 and July 2025, for detached houses, in the Hart local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 45.5% inflationary increase is applied to the most recent sale price for 18 THE FLATS of £499,950 on 27th November 2013. For the value to have increased from £499,950 to £727,239 over the twelve years and four months to July 2025, the following assumptions must hold true:
18 THE FLATS is 160m², which includes one extension, according to the EPC inspection conducted in March 2013. This puts it in the largest 20% of detached houses houses in Blackwater, based on EPC data. The below chart shows the distribution of detached houses houses by size in Blackwater, and where 18 THE FLATS lies on this distribution: 80% of detached houses houses are smaller than 18 THE FLATS, and 19% of houses are larger. Note that EPC data is not available for all properties in Blackwater.

18 THE FLATS sits on a plot of roughly 0.159 of an acre, or 645m². The below map shows the location of 18 THE FLATS, 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 18 THE FLATS). 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.

18 THE FLATS is located in BLACKWATER, in the GU17 postcode district. The below map shows the position of No. 18 on THE FLATS.

Most recent sales first: