Property Data Search:

18, TREM Y CASTELL, CAERPHILLY, CF83 1TH - £207,000

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.

18 TREM Y CASTELL is a midsized extended detached house of 103m², built sometime between 1996 and 2002, which could now be worth an estimated £344,215. It was last sold for £207,000 in October 2007, which was around 11% above the average October 2007 detached price in the Caerphilly local authority area. The most recent EPC inspection was April 2024, where the current energy rating was B, and the potential energy rating was B.

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18 TREM Y CASTELL Sold Prices

Land registry data shows three sales for 18 TREM Y CASTELL since 1st January 1995. The below table shows the price paid for the three sales, along with the average detached price in the Caerphilly local authority area for the corresponding sale date. All of the three 18 TREM Y CASTELL 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
2007
23 OCT
£207,000£186,935
up arrow
11% above HPI
2002
12 APR
£115,000£87,507
up arrow
31% above HPI
1996
29 NOV
£81,495£66,767
up arrow
22% above HPI

18 TREM Y CASTELL Price Paid vs. HPI Average

The below graph shows the average detached house price in the Caerphilly local authority area over time, sourced from the HPI. The three 18 TREM Y CASTELL sales between November 1996 and October 2007 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 April 2002 sale was for 31% above the HPI. So the extrapolation line tracks at 31% above the HPI over time, until the October 2007 sale, where it falls to 11% above the HPI. The line then continues to track at 11% above the HPI.

18, TREM Y CASTELL, CAERPHILLY, CF83 1TH: Price paid vs HM Land Registry's House Price Index

What might 18 TREM Y CASTELL be worth now?

18 TREM Y CASTELL might now be worth an estimated £344,215.

This is based on house price inflation of 66.3%, between October 2007 and February 2025, for 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 66.3% inflationary increase is applied to the most recent sale price for 18 TREM Y CASTELL of £207,000 on 23rd October 2007. For the value to have increased from £207,000 to £344,215 over the eighteen years and eight months to February 2025, the following assumptions must hold true:

  • The value of 18 TREM Y CASTELL has moved in line with the HPI for detached houses in the Caerphilly local authority area.
  • The October 2007 sale price of £207,000 represented a fair market value for the property.
  • The size, condition, and specification of 18 TREM Y CASTELL has not materially changed since October 2007.
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 18 TREM Y CASTELL?

18 TREM Y CASTELL is 103m², which includes one extension, according to the EPC inspection conducted in April 2024. This puts it in the smallest 50% of detached houses houses in Caerphilly, based on EPC data. The below chart shows the distribution of detached houses houses by size in Caerphilly, and where 18 TREM Y CASTELL lies on this distribution: 44% of detached houses houses are smaller than 18 TREM Y CASTELL, and 55% of houses are larger. Note that EPC data is not available for all properties in Caerphilly.

18, TREM Y CASTELL, CAERPHILLY, CF83 1TH: Size of property relative to detached houses houses in Caerphilly

18 TREM Y CASTELL: Plot and Title Map

18 TREM Y CASTELL sits on a plot of roughly 0.049 of an acre, or 198m². The below map shows the location of 18 TREM Y CASTELL, 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 18 TREM Y CASTELL). 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.

18, TREM Y CASTELL, CAERPHILLY, CF83 1TH: Plot and title map

Where is 18 TREM Y CASTELL?

18 TREM Y CASTELL is located in CAERPHILLY, in the CF83 postcode district. The below map shows the position of No. 18 on TREM Y CASTELL.

18, TREM Y CASTELL, CAERPHILLY, CF83 1TH: Location map and indicative extent of plot

All property sales on TREM Y CASTELL

Most recent sales first:

Limited data available
2021
18 JUN
£185,000
Full data available
2020
28 AUG
£245,000
Full data available
2019
11 OCT
£270,000
Full data available
2017
22 SEP
£205,000
Full data available
2017
4 AUG
£232,500
Full data available
2017
10 JUL
£177,000
Full data available
2017
30 JUN
£239,950
Limited data available
2015
12 FEB
£153,000
Full data available
2014
14 NOV
£220,000
Full data available
2014
25 APR
£153,000
Full data available
2012
29 OCT
£157,000
Limited data available
2012
16 JUL
£143,500
Limited data available
2008
14 APR
£170,000
Full data available
2007
23 OCT
£207,000
Full data available
2007
1 JUN
£149,950
Full data available
2006
12 APR
£188,950
Limited data available
2006
31 MAR
£136,000
Full data available
2005
28 APR
£190,000
Full data available
2005
28 JAN
£193,500
Limited data available
2004
23 AUG
£139,950
Full data available
2004
21 MAY
£135,000
Full data available
2003
22 OCT
£170,500
Limited data available
2002
28 OCT
£119,000
Limited data available
2002
2 OCT
£119,950
Limited data available
2002
27 SEP
£99,950
Full data available
2002
23 AUG
£93,500
Limited data available
2002
9 AUG
£84,000
Full data available
2002
12 APR
£115,000
Full data available
2001
11 JUL
£72,950
Limited data available
2000
6 NOV
£65,000
Full data available
2000
8 AUG
£88,500
Full data available
2000
6 JUN
£81,950
Limited data available
1999
29 OCT
£76,000
Full data available
1999
29 OCT
£63,500
Limited data available
1999
22 JUL
£88,000
Limited data available
1999
27 JAN
£60,000
Limited data available
1999
22 JAN
£59,995
Full data available
1996
20 DEC
£80,000
Limited data available
1996
13 DEC
£56,000
Limited data available
1996
6 DEC
£59,000
Full data available
1996
29 NOV
£81,495
Full data available
1996
29 NOV
£65,075
Full data available
1996
28 NOV
£85,000
Full data available
1996
1 NOV
£59,995
Limited data available
1996
1 NOV
£59,995
Full data available
1996
25 OCT
£74,995
Limited data available
1996
4 OCT
£68,995
Limited data available
1996
27 SEP
£59,995
Full data available
1996
18 SEP
£79,995
Limited data available
1996
23 AUG
£73,531
Limited data available
1996
28 JUN
£59,995
Limited data available
1996
21 JUN
£83,995
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.