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.
15 FLAG WALK is a large extended semi-detached house of 105m², built sometime between 1967 and 1975, which could now be worth an estimated £726,820. It was last sold for £480,000 in December 2014, which was around 25% above the average December 2014 semi-detached price in the Hillingdon local authority area. The most recent EPC inspection was April 2014, where the current energy rating was E, and the potential energy rating was B.
Land registry data shows one sale for 15 FLAG WALK since 1st January 1995. The below table shows the price paid for the one sale, along with the average semi-detached price in the Hillingdon local authority area for the corresponding sale date. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2014 16 DEC | £480,000 | £383,228 | 25% above HPI |
15 FLAG WALK might now be worth an estimated £726,820.
This is based on house price inflation of 51.4%, between December 2014 and May 2026, for semi-detached houses, in the Hillingdon local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 51.4% inflationary increase is applied to the most recent sale price for 15 FLAG WALK of £480,000 on 16th December 2014. For the value to have increased from £480,000 to £726,820 over the twelve years and seven months to May 2026, the following assumptions must hold true:
15 FLAG WALK is 105m², which includes one extension, according to the EPC inspection conducted in April 2014. This puts it in the largest 40% of semi-detached houses in Ruislip, based on EPC data. The below chart shows the distribution of semi-detached houses by size in Ruislip, and where 15 FLAG WALK lies on this distribution: 62% of semi-detached houses are smaller than 15 FLAG WALK, and 37% of semi-detached houses are larger. Note that EPC data is not available for all properties in Ruislip.

15 FLAG WALK sits on a plot of roughly 0.052 of an acre, or 211m².
15 FLAG WALK is located in PINNER, in the HA5 postcode district.
Most recent sales first: