40, OBSERVATORY ROAD, BLACKBURN, BB2 3HE - £175,999

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.

40 OBSERVATORY ROAD is a very small semi-detached house of 63m², built sometime between 1900 and 1929, which could now be worth an estimated £186,166. It was last sold for £175,999 in March 2025, which was around 2% above the average March 2025 semi-detached price in the Blackburn with Darwen local authority area. The most recent EPC inspection was October 2024, where the current energy rating was D, and the potential energy rating was B.

40 OBSERVATORY ROAD Sold Prices

Land registry data shows one sale for 40 OBSERVATORY ROAD since 1^st January 1995. The below table shows the price paid for the one sale, along with the average semi-detached price in the Blackburn with Darwen 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
2025 31 MAR	£175,999	£173,165	2% above HPI

What might 40 OBSERVATORY ROAD be worth now?

40 OBSERVATORY ROAD might now be worth an estimated £186,166.

This is based on house price inflation of 5.8%, between March 2025 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 5.8% inflationary increase is applied to the most recent sale price for 40 OBSERVATORY ROAD of £175,999 on 31st March 2025. For the value to have increased from £175,999 to £186,166 over the ten months to May 2026, the following assumptions must hold true:

• The value of 40 OBSERVATORY ROAD has moved in line with the HPI for semi-detached houses in the Blackburn with Darwen local authority area.
• The March 2025 sale price of £175,999 represented a fair market value for the property.
• The size, condition, and specification of 40 OBSERVATORY ROAD has not materially changed since March 2025.

How Large is 40 OBSERVATORY ROAD?

40 OBSERVATORY ROAD is 63m² according to the EPC inspection conducted in October 2024. This puts it in the smallest 20% 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 40 OBSERVATORY ROAD lies on this distribution: 13% of semi-detached houses are smaller than 40 OBSERVATORY ROAD, and 87% of semi-detached houses are larger. Note that EPC data is not available for all properties in Blackburn.

40 OBSERVATORY ROAD: Plot

40 OBSERVATORY ROAD sits on a plot of roughly 1.2 acres, or 4,688m².

Where is 40 OBSERVATORY ROAD?

40 OBSERVATORY ROAD is located in BLACKBURN, in the BB2 postcode district.