Property Data Search:

21, BRYN DERWEN, RADYR, CARDIFF, CF15 8SW - £199,950

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.

21 BRYN DERWEN is a very small terraced house of 55m², built sometime between 1967 and 1975, which could now be worth an estimated £230,460. It was last sold for £199,950 in October 2021, which was around 10% below the average October 2021 terraced price in the Cardiff local authority area. The most recent EPC inspection was July 2020, where the current energy rating was C, and the potential energy rating was B.

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21 BRYN DERWEN Sold Prices

Land registry data shows three sales for 21 BRYN DERWEN since 1st January 1995. The below table shows the price paid for the three sales, along with the average terraced price in the Cardiff local authority area for the corresponding sale date. Two of the three 21 BRYN DERWEN sales were for below the average price, whilst one was for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2021
15 OCT
£199,950£222,073
down arrow
10% below HPI
2004
21 MAY
£128,500£118,434
up arrow
8% above HPI
1999
22 JAN
£47,000£51,298
down arrow
8% below HPI

21 BRYN DERWEN Price Paid vs. HPI Average

The below graph shows the average terraced house price in the Cardiff local authority area over time, sourced from the HPI. The three 21 BRYN DERWEN sales between January 1999 and October 2021 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 May 2004 sale was for 8% above the HPI. So the extrapolation line tracks at 8% above the HPI over time, until the October 2021 sale, where it falls to 10% below the HPI. The line then continues to track at 10% below the HPI.

21, BRYN DERWEN, RADYR, CARDIFF, CF15 8SW: Price paid vs HM Land Registry's House Price Index

What might 21 BRYN DERWEN be worth now?

21 BRYN DERWEN might now be worth an estimated £230,460.

This is based on house price inflation of 15.3%, between October 2021 and June 2025, for terraced houses, in the Cardiff local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 15.3% inflationary increase is applied to the most recent sale price for 21 BRYN DERWEN of £199,950 on 15th October 2021. For the value to have increased from £199,950 to £230,460 over the four years and four months to June 2025, the following assumptions must hold true:

  • The value of 21 BRYN DERWEN has moved in line with the HPI for terraced houses in the Cardiff local authority area.
  • The October 2021 sale price of £199,950 represented a fair market value for the property.
  • The size, condition, and specification of 21 BRYN DERWEN has not materially changed since October 2021.
Disclaimer: Please note that this is a theoretical estimate based on assumptions which may or may not be correct. It should not be relied on for any purpose.

How Large is 21 BRYN DERWEN?

21 BRYN DERWEN is 55m² according to the EPC inspection conducted in July 2020. This puts it in the smallest 10% of terraced houses houses in Cardiff, based on EPC data. The below chart shows the distribution of terraced houses houses by size in Cardiff, and where 21 BRYN DERWEN lies on this distribution: 1% of terraced houses houses are smaller than 21 BRYN DERWEN, and 99% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

21, BRYN DERWEN, RADYR, CARDIFF, CF15 8SW: Size of property relative to terraced houses houses in Cardiff

21 BRYN DERWEN: Plot and Title Map

21 BRYN DERWEN sits on a plot of roughly 0.035 of an acre, or 143m². The below map shows the location of 21 BRYN DERWEN, 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 BRYN DERWEN). 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.

21, BRYN DERWEN, RADYR, CARDIFF, CF15 8SW: Plot and title map

Where is 21 BRYN DERWEN?

21 BRYN DERWEN is located in RADYR, in the CF15 postcode district. The below map shows the position of No. 21 on BRYN DERWEN.

21, BRYN DERWEN, RADYR, CARDIFF, CF15 8SW: Location map and indicative extent of plot

All property sales on BRYN DERWEN

Most recent sales first:

Limited data available
2025
2 MAY
£200,000
Full data available
2025
27 MAR
£190,000
Full data available
2024
28 AUG
£212,500
Full data available
2024
18 MAR
£206,000
Full data available
2023
22 FEB
£250,000
Full data available
2022
3 OCT
£238,000
Limited data available
2022
9 JUN
£234,000
Limited data available
2022
9 JUN
£234,000
Full data available
2022
20 MAY
£207,000
Limited data available
2022
25 FEB
£190,000
Limited data available
2022
25 FEB
£190,000
Full data available
2021
17 DEC
£226,000
Full data available
2021
15 OCT
£199,950
Full data available
2021
30 SEP
£210,000
Full data available
2021
23 AUG
£200,000
Full data available
2021
17 FEB
£245,000
Full data available
2020
2 JUN
£173,000
Full data available
2020
9 APR
£160,000
Full data available
2019
4 OCT
£175,000
Full data available
2019
30 APR
£170,000
Full data available
2019
29 MAR
£165,000
Full data available
2018
30 NOV
£170,000
Full data available
2018
30 NOV
£170,000
Limited data available
2018
30 NOV
£170,000
Full data available
2018
30 NOV
£200,000
Limited data available
2018
30 NOV
£710,000
Full data available
2018
24 JAN
£187,000
Limited data available
2017
18 DEC
£210,000
Full data available
2017
15 DEC
£167,000
Full data available
2017
20 OCT
£165,000
Full data available
2017
15 SEP
£210,000
Full data available
2017
15 SEP
£165,000
Full data available
2017
25 AUG
£160,000
Full data available
2017
24 FEB
£154,000
Full data available
2016
26 OCT
£175,000
Full data available
2016
26 AUG
£148,000
Full data available
2016
24 JUN
£149,000
Full data available
2015
23 DEC
£179,000
Full data available
2015
27 NOV
£180,000
Full data available
2014
7 FEB
£177,000
Full data available
2013
3 DEC
£120,000
Limited data available
2013
22 NOV
£320,000
Full data available
2012
3 FEB
£137,500
Full data available
2009
30 JAN
£119,000
Full data available
2007
17 DEC
£165,000
Full data available
2006
27 JAN
£135,500
Full data available
2005
30 SEP
£144,000
Limited data available
2005
15 JUL
£162,000
Full data available
2005
18 FEB
£145,000
Limited data available
2004
24 OCT
£140,000
Full data available
2004
4 JUN
£145,000
Full data available
2004
21 MAY
£128,500
Full data available
2003
1 DEC
£140,000
Full data available
2003
28 NOV
£144,000
Full data available
2003
20 OCT
£110,000
Full data available
2003
29 AUG
£139,950
Full data available
2003
29 AUG
£105,000
Full data available
2003
30 MAY
£120,000
Full data available
2002
25 NOV
£123,000
Full data available
2002
10 MAY
£69,000
Limited data available
2002
10 MAY
£91,500
Full data available
2002
11 JAN
£68,000
Full data available
2001
25 SEP
£71,000
Full data available
2001
22 AUG
£89,950
Full data available
2001
27 JUL
£70,000
Limited data available
2001
25 JUN
£84,000
Full data available
2001
7 JUN
£76,500
Full data available
2001
7 FEB
£62,000
Full data available
2000
15 SEP
£70,500
Limited data available
1999
28 OCT
£67,000
Full data available
1999
15 OCT
£54,000
Full data available
1999
22 JAN
£47,000
Limited data available
1998
11 SEP
£62,000
Full data available
1998
27 JUL
£49,000
Limited data available
1998
1 JUL
£64,950
Full data available
1998
27 MAR
£54,000
Full data available
1998
3 MAR
£47,500
Full data available
1998
9 JAN
£57,000
Full data available
1997
19 DEC
£62,000
Limited data available
1997
19 DEC
£46,000
Limited data available
1997
12 DEC
£50,000
Limited data available
1997
23 MAY
£40,000
Full data available
1997
9 MAY
£46,500
Full data available
1997
27 MAR
£45,000
Limited data available
1997
27 MAR
£39,500
Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Source: HM Land Registry UK House Price Index
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Copyright statement: This information is subject to Crown copyright and database rights 2025 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2025 Ordnance Survey 100026316. Conditions of use.