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20, TWYNI TEG, KILLAY, SWANSEA, SA2 7NS - £204,000

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.

20 TWYNI TEG is a small detached house of 101m², built sometime between 1967 and 1975, which could now be worth an estimated £321,147. It was last sold for £204,000 in October 2015, which was around 2% below the average October 2015 detached price in the Swansea local authority area. The most recent EPC inspection was July 2015, where the current energy rating was E, and the potential energy rating was B.

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20 TWYNI TEG Sold Prices

Land registry data shows one sale for 20 TWYNI TEG since 1st January 1995. The below table shows the price paid for the one sale, along with the average detached price in the Swansea local authority area for the corresponding sale date. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

DatePriceHPI PriceVariation from HPI
2015
23 OCT
£204,000£208,847
down arrow
2% below HPI

What might 20 TWYNI TEG be worth now?

20 TWYNI TEG might now be worth an estimated £321,147.

This is based on house price inflation of 57.4%, between October 2015 and May 2026, for detached houses, in the Swansea local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 57.4% inflationary increase is applied to the most recent sale price for 20 TWYNI TEG of £204,000 on 23rd October 2015. For the value to have increased from £204,000 to £321,147 over the eleven years and five months to May 2026, the following assumptions must hold true:

  • The value of 20 TWYNI TEG has moved in line with the HPI for detached houses in the Swansea local authority area.
  • The October 2015 sale price of £204,000 represented a fair market value for the property.
  • The size, condition, and specification of 20 TWYNI TEG has not materially changed since October 2015.
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 20 TWYNI TEG?

20 TWYNI TEG is 101m² according to the EPC inspection conducted in July 2015. This puts it in the smallest 40% of detached houses in Swansea, based on EPC data. The below chart shows the distribution of detached houses by size in Swansea, and where 20 TWYNI TEG lies on this distribution: 35% of detached houses are smaller than 20 TWYNI TEG, and 64% of detached houses are larger. Note that EPC data is not available for all properties in Swansea.

20, TWYNI TEG, KILLAY, SWANSEA, SA2 7NS: Size of property relative to detached houses in Swansea

20 TWYNI TEG: Plot

20 TWYNI TEG sits on a plot of roughly 0.188 of an acre, or 761m².

Where is 20 TWYNI TEG?

20 TWYNI TEG is located in KILLAY, in the SA2 postcode district.

All property sales on TWYNI TEG

Most recent sales first:

Limited data available
2026
23 APR
£275,000
Full data available
2026
9 JAN
£335,000
Limited data available
2024
3 OCT
£267,500
Full data available
2024
22 AUG
£357,000
Full data available
2024
1 MAY
£322,050
Limited data available
2024
29 FEB
£330,000
Full data available
2023
20 APR
£315,000
Limited data available
2021
17 DEC
£315,000
Full data available
2021
28 JUN
£279,950
Limited data available
2021
22 JAN
£263,000
Full data available
2021
12 JAN
£252,000
Full data available
2020
24 JAN
£260,000
Limited data available
2019
31 MAY
£193,000
Limited data available
2019
31 MAY
£193,000
Full data available
2019
29 MAY
£187,000
Limited data available
2017
27 OCT
£225,500
Full data available
2016
8 JUL
£230,000
Limited data available
2015
23 OCT
£204,000
Full data available
2015
15 OCT
£215,000
Full data available
2015
9 JUN
£264,885
Full data available
2014
1 MAY
£166,000
Limited data available
2013
11 OCT
£182,500
Limited data available
2010
6 SEP
£155,000
Limited data available
2008
9 MAY
£150,000
Limited data available
2008
11 MAR
£229,000
Full data available
2007
14 DEC
£182,000
Full data available
2006
24 MAR
£214,000
Full data available
2004
20 AUG
£216,250
Limited data available
2003
9 APR
£134,000
Full data available
2002
10 SEP
£117,000
Full data available
2002
19 JUL
£120,000
Limited data available
2000
30 JUN
£83,500
Limited data available
2000
9 JUN
£86,500
Limited data available
2000
26 MAY
£86,500
Limited data available
1999
13 AUG
£105,000
Limited data available
1998
7 AUG
£71,000
Limited data available
1998
30 JUN
£79,000
Limited data available
1997
5 AUG
£93,000
Limited data available
1997
21 FEB
£95,000
Limited data available
1997
21 FEB
£95,000
Source: HM Land Registry Price Paid Data
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. 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 2026. This data is licensed under the Open Government Licence v3.0.
Source: Energy Performance of Buildings Data: England and Wales
Licence: Ordnance Survey and Royal Mail Copyright and Database Right Notice.
Licence: Open Government Licence v3.0.
Source: INSPIRE Polygons
Copyright statement: This information is subject to Crown copyright and database rights 2026 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 2026 Ordnance Survey 100026316. Conditions of use.
Licence: Open Government Licence v3.0.