21, RHOS Y DDERWEN, BLACKWOOD, NP12 1HB - £115,000

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

21 RHOS Y DDERWEN is a small semi-detached house of 90m², built sometime between 1996 and 2002. It was last sold for £115,000 in December 2012, which was around 13% above the average December 2012 semi-detached price in the Caerphilly local authority area. The most recent EPC inspection was March 2011, where the current energy rating was C, and the potential energy rating was C.

21 RHOS Y DDERWEN Sold Prices

Land registry data shows three sales for 21 RHOS Y DDERWEN since 1^st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the Caerphilly local authority area for the corresponding sale date. All of the three 21 RHOS Y DDERWEN 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
2012 5 DEC	£115,000	£101,714	13% above HPI
2003 28 FEB	£88,950	£60,934	46% above HPI
2000 8 SEP	£63,220	£44,944	41% above HPI

21 RHOS Y DDERWEN Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Caerphilly local authority area over time, sourced from the HPI. The three 21 RHOS Y DDERWEN sales between September 2000 and December 2012 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 February 2003 sale was for 46% above the HPI. So the extrapolation line tracks at 46% above the HPI over time, until the December 2012 sale, where it falls to 13% above the HPI. The line then continues to track at 13% above the HPI.

What might 21 RHOS Y DDERWEN be worth now?

21 RHOS Y DDERWEN might now be worth an estimated £222,442.

This is based on house price inflation of 93.4%, between December 2012 and December 2024, for semi-detached houses, in the Caerphilly local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 93.4% inflationary increase is applied to the most recent sale price for 21 RHOS Y DDERWEN of £115,000 on 5th December 2012. For the value to have increased from £115,000 to £222,442 over the twelve years to December 2024, the following assumptions must hold true:

• The value of 21 RHOS Y DDERWEN has moved in line with the HPI for semi-detached houses in the Caerphilly local authority area.
• The December 2012 sale price of £115,000 represented a fair market value for the property.
• The size, condition, and specification of 21 RHOS Y DDERWEN has not materially changed since December 2012.

How Large is 21 RHOS Y DDERWEN?

21 RHOS Y DDERWEN is 90m² according to the EPC inspection conducted in March 2011. This puts it in the smallest 30% of semi-detached houses houses in Blackwood, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Blackwood, and where 21 RHOS Y DDERWEN lies on this distribution: 28% of semi-detached houses houses are smaller than 21 RHOS Y DDERWEN, and 72% of houses are larger. Note that EPC data is not available for all properties in Blackwood.

21 RHOS Y DDERWEN: Plot and Title Map

21 RHOS Y DDERWEN sits on a plot of roughly 0.047 of an acre, or 191m². The below map shows the location of 21 RHOS Y DDERWEN, 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 21 RHOS Y DDERWEN). 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 21 RHOS Y DDERWEN?

21 RHOS Y DDERWEN is located in BLACKWOOD, in the NP12 postcode district. The below map shows the position of No. 21 on RHOS Y DDERWEN.