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.
4 OBSERVATORY ROAD is a large extended semi-detached house of 100m², built sometime between 1930 and 1949, which could now be worth an estimated £214,404. It was last sold for £183,000 in September 2022, which was around 17% above the average September 2022 semi-detached price in the Blackburn with Darwen local authority area. The most recent EPC inspection was August 2022, where the current energy rating was D, and the potential energy rating was C.
Land registry data shows three sales for 4 OBSERVATORY ROAD since 1st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the Blackburn with Darwen local authority area for the corresponding sale date. All of the three 4 OBSERVATORY ROAD 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 |
|---|---|---|---|
2022 16 SEP | £183,000 | £156,339 | 17% above HPI |
2022 16 SEP | £183,000 | £156,339 | 17% above HPI |
2000 10 NOV | £60,000 | £40,761 | 47% above HPI |
4 OBSERVATORY ROAD might now be worth an estimated £214,404.
This is based on house price inflation of 17.2%, between September 2022 and May 2026, for semi-detached houses, in the Blackburn with Darwen local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 17.2% inflationary increase is applied to the most recent sale price for 4 OBSERVATORY ROAD of £183,000 on 16th September 2022. For the value to have increased from £183,000 to £214,404 over the four years and four months to May 2026, the following assumptions must hold true:
4 OBSERVATORY ROAD is 100m², which includes one extension, according to the EPC inspection conducted in August 2022. This puts it in the largest 30% of semi-detached houses in Blackburn, based on EPC data. The below chart shows the distribution of semi-detached houses by size in Blackburn, and where 4 OBSERVATORY ROAD lies on this distribution: 74% of semi-detached houses are smaller than 4 OBSERVATORY ROAD, and 26% of semi-detached houses are larger. Note that EPC data is not available for all properties in Blackburn.

4 OBSERVATORY ROAD sits on a plot of roughly 1.0 acres, or 4,240m².
4 OBSERVATORY ROAD is located in BLACKBURN, in the BB2 postcode district.
Most recent sales first: