Property Data Search:

21, CLOS DERWEN, CARDIFF, CF23 5HJ - £480,000

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 CLOS DERWEN is a large detached house of 131m², built sometime between 2003 and 2006, which could now be worth an estimated £562,862. It was last sold for £480,000 in August 2021, which was around 8% above the average August 2021 detached price in the Cardiff local authority area. The most recent EPC inspection was May 2011, where the current energy rating was C, and the potential energy rating was C.

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21 CLOS DERWEN Sold Prices

Land registry data shows four sales for 21 CLOS DERWEN since 1st January 1995. The below table shows the price paid for the four sales, along with the average detached price in the Cardiff local authority area for the corresponding sale date. All of the four 21 CLOS DERWEN sales were 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
23 AUG
£480,000£445,774
up arrow
8% above HPI
2015
15 JAN
£363,000£333,433
up arrow
9% above HPI
2004
2 JUL
£315,000£261,418
up arrow
20% above HPI
2000
20 APR
£180,000£128,977
up arrow
40% above HPI

21 CLOS DERWEN Price Paid vs. HPI Average

The below graph shows the average detached house price in the Cardiff local authority area over time, sourced from the HPI. The four 21 CLOS DERWEN sales between April 2000 and August 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 January 2015 sale was for 9% above the HPI. So the extrapolation line tracks at 9% above the HPI over time, until the August 2021 sale, where it falls to 8% above the HPI. The line then continues to track at 8% above the HPI.

21, CLOS DERWEN, CARDIFF, CF23 5HJ: Price paid vs HM Land Registry's House Price Index

What might 21 CLOS DERWEN be worth now?

21 CLOS DERWEN might now be worth an estimated £562,862.

This is based on house price inflation of 17.3%, between August 2021 and February 2025, for detached 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 17.3% inflationary increase is applied to the most recent sale price for 21 CLOS DERWEN of £480,000 on 23rd August 2021. For the value to have increased from £480,000 to £562,862 over the four years and six months to February 2025, the following assumptions must hold true:

  • The value of 21 CLOS DERWEN has moved in line with the HPI for detached houses in the Cardiff local authority area.
  • The August 2021 sale price of £480,000 represented a fair market value for the property.
  • The size, condition, and specification of 21 CLOS DERWEN has not materially changed since August 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 CLOS DERWEN?

21 CLOS DERWEN is 131m² according to the EPC inspection conducted in May 2011. This puts it in the largest 40% of detached houses houses in Cardiff, based on EPC data. The below chart shows the distribution of detached houses houses by size in Cardiff, and where 21 CLOS DERWEN lies on this distribution: 61% of detached houses houses are smaller than 21 CLOS DERWEN, and 39% of houses are larger. Note that EPC data is not available for all properties in Cardiff.

21, CLOS DERWEN, CARDIFF, CF23 5HJ: Size of property relative to detached houses houses in Cardiff

21 CLOS DERWEN: Plot and Title Map

21 CLOS DERWEN sits on a plot of roughly 0.082 of an acre, or 331m². The below map shows the location of 21 CLOS 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 CLOS 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, CLOS DERWEN, CARDIFF, CF23 5HJ: Plot and title map

Where is 21 CLOS DERWEN?

21 CLOS DERWEN is located in CARDIFF, in the CF23 postcode district. The below map shows the position of No. 21 on CLOS DERWEN.

21, CLOS DERWEN, CARDIFF, CF23 5HJ: Location map and indicative extent of plot

All property sales on CLOS DERWEN

Most recent sales first:

Full data available
2022
12 SEP
£407,000
Full data available
2021
29 OCT
£425,000
Full data available
2021
23 AUG
£480,000
Limited data available
2021
4 MAY
£330,000
Limited data available
2021
29 JAN
£380,000
Limited data available
2020
19 OCT
£293,000
Full data available
2020
3 APR
£478,000
Full data available
2019
14 NOV
£240,000
Limited data available
2019
15 APR
£180,000
Full data available
2018
18 OCT
£340,000
Limited data available
2018
9 JAN
£317,000
Full data available
2018
3 JAN
£450,000
Full data available
2016
30 JUN
£415,000
Full data available
2016
17 JUN
£306,000
Full data available
2015
16 JAN
£425,000
Full data available
2015
15 JAN
£363,000
Full data available
2014
19 AUG
£370,000
Full data available
2013
20 DEC
£469,950
Limited data available
2013
23 AUG
£250,000
Limited data available
2013
25 MAR
£300,000
Limited data available
2013
22 MAR
£249,950
Full data available
2012
14 DEC
£360,000
Full data available
2011
20 MAY
£220,000
Limited data available
2010
27 AUG
£200,000
Full data available
2009
30 NOV
£276,000
Full data available
2009
25 AUG
£250,000
Full data available
2009
22 JAN
£220,000
Limited data available
2007
6 SEP
£357,500
Full data available
2007
1 JUN
£205,000
Full data available
2006
3 NOV
£325,000
Full data available
2006
23 OCT
£230,000
Full data available
2006
12 OCT
£335,000
Limited data available
2006
13 JUN
£345,000
Full data available
2006
5 MAY
£234,000
Full data available
2005
6 DEC
£199,000
Limited data available
2005
14 OCT
£210,000
Limited data available
2005
14 OCT
£330,000
Limited data available
2004
3 SEP
£235,000
Limited data available
2004
30 JUL
£345,000
Full data available
2004
2 JUL
£315,000
Full data available
2004
19 MAY
£225,000
Full data available
2004
15 MAR
£212,000
Full data available
2002
1 MAR
£216,000
Full data available
2001
4 SEP
£199,950
Limited data available
2001
31 AUG
£227,000
Limited data available
2001
30 JUL
£210,000
Limited data available
2000
29 SEP
£155,000
Full data available
2000
15 SEP
£112,950
Limited data available
2000
15 SEP
£154,950
Limited data available
2000
8 SEP
£127,950
Limited data available
2000
25 AUG
£250,000
Limited data available
2000
23 AUG
£125,000
Full data available
2000
21 JUL
£155,000
Limited data available
2000
23 JUN
£155,000
Full data available
2000
23 JUN
£129,950
Full data available
2000
23 JUN
£129,950
Limited data available
2000
23 JUN
£109,950
Full data available
2000
23 JUN
£119,950
Full data available
2000
16 JUN
£185,000
Full data available
2000
7 JUN
£129,950
Full data available
2000
2 JUN
£124,950
Limited data available
2000
26 MAY
£151,950
Limited data available
2000
26 MAY
£210,000
Limited data available
2000
19 MAY
£162,950
Limited data available
2000
19 MAY
£200,000
Limited data available
2000
28 APR
£179,950
Limited data available
2000
20 APR
£141,950
Full data available
2000
20 APR
£180,000
Limited data available
2000
19 APR
£141,950
Limited data available
2000
18 APR
£187,950
Limited data available
2000
14 APR
£195,000
Limited data available
2000
14 APR
£205,000
Full data available
2000
12 APR
£179,950
Limited data available
2000
25 FEB
£199,950
Limited data available
2000
15 FEB
£169,950
Full data available
2000
4 FEB
£196,950
Limited data available
2000
21 JAN
£209,950
Limited data available
1999
22 DEC
£209,000
Full data available
1999
21 DEC
£141,550
Limited data available
1999
17 DEC
£139,950
Full data available
1999
2 DEC
£173,950
Limited data available
1999
26 NOV
£169,950
Limited data available
1999
26 NOV
£169,950
Full data available
1999
19 NOV
£143,950
Limited data available
1999
19 NOV
£169,950
Full data available
1999
19 NOV
£161,950
Limited data available
1999
29 OCT
£199,950
Limited data available
1999
26 OCT
£186,950
Limited data available
1999
7 OCT
£169,950
Full data available
1999
29 SEP
£220,000
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.