GREENWISE, COMPTONS BROW LANE, HORSHAM, RH13 6BX - £585,000

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

GREENWISE is a very large extended detached house of 190m², built sometime between 1996 and 2002, which could now be worth an estimated £990,127. It was last sold for £585,000 in December 2009, which was around 35% above the average December 2009 detached price in the Horsham local authority area. The most recent EPC inspection was February 2009, where the current energy rating was D, and the potential energy rating was C.

GREENWISE Sold Prices

Land registry data shows three sales for GREENWISE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Horsham local authority area for the corresponding sale date. All of the three GREENWISE 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
2009 16 DEC	£585,000	£433,876	35% above HPI
2003 17 SEP	£499,950	£370,642	35% above HPI
1998 27 MAR	£295,000	£172,807	71% above HPI

GREENWISE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Horsham local authority area over time, sourced from the HPI. The three GREENWISE sales between March 1998 and December 2009 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 2003 sale was for 35% above the HPI. So the extrapolation line tracks at 35% above the HPI over time, until the December 2009 sale, which was also at 35% above the HPI.

What might GREENWISE be worth now?

GREENWISE might now be worth an estimated £990,127.

This is based on house price inflation of 69.3%, between December 2009 and December 2024, for detached houses, in the Horsham local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 69.3% inflationary increase is applied to the most recent sale price for GREENWISE of £585,000 on 16th December 2009. For the value to have increased from £585,000 to £990,127 over the fifteen years to December 2024, the following assumptions must hold true:

• The value of GREENWISE has moved in line with the HPI for detached houses in the Horsham local authority area.
• The December 2009 sale price of £585,000 represented a fair market value for the property.
• The size, condition, and specification of GREENWISE has not materially changed since December 2009.

How Large is GREENWISE?

GREENWISE is 190m², which includes one extension, according to the EPC inspection conducted in February 2009. This puts it in the largest 20% of detached houses houses in Horsham, based on EPC data. The below chart shows the distribution of detached houses houses by size in Horsham, and where GREENWISE lies on this distribution: 89% of detached houses houses are smaller than GREENWISE, and 11% of houses are larger. Note that EPC data is not available for all properties in Horsham.

GREENWISE: Plot and Title Map

GREENWISE sits on a plot of roughly 0.206 of an acre, or 833m². The below map shows the location of GREENWISE, 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 GREENWISE). 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 GREENWISE?

GREENWISE is located on COMPTONS BROW LANE in HORSHAM, in the RH13 postcode district. The below map shows the position of GREENWISE on COMPTONS BROW LANE.