PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Heol-y-Twyn, PORTH, CF39 0PS
Introduction
Energy Performance Certificates (EPCs) are designed to tell you how efficient a building is and provides a rating between A (very efficient) and G which is inefficient. It helps to identify how costly it will be to light and heat a property and what the carbon dioxide emissions are likely to be.
An EPC needs to be provided as part of the process of selling or renting a house and should be availale as soon as the property is marketed. An EPC may only be produced by an approved domestic energy assessor and each certificate is valid for 10 years.
Additionally, an EPC will highlight potential efficiency improvements that could be made to the property, an estimated cost for implementation and the likely savings that can be made as a result. These costs and savings are for a typical household in that property and not specific to you or your family.
Certificates issued for Heol-y-Twyn, CF39 0PS are shown below and the data are updated monthly for England and Wales and quarterly for properties in Scotland.
Data are provided by the Department for Levelling Up, Housing and Communities.
Energy Performance Certificates Generated for Heol-y-Twyn, PORTH, CF39 0PS
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 Heol-y-Twyn
Date
17 Oct 2012
Current
Potential
67
82
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
17 Oct 2012
67
82
7 Mar 2011
76
76
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
11 Heol-Y-Twyn
Date
9 Nov 2023
Current
Potential
65
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
9 Nov 2023
65
86
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
11 Heol-y-Twyn
Date
14 Apr 2015
Current
Potential
50
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
14 Apr 2015
50
82
28 Apr 2010
69
73
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
14 Heol-y-Twyn
Date
24 Sep 2008
Current
Potential
39
75
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
24 Sep 2008
39
75
Total Floor Area
98 sq m
Current CO2 Emissions Level
6.6
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
77
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
15 Heol-y-Twyn
Date
22 Aug 2014
Current
Potential
38
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
22 Aug 2014
38
78
Total Floor Area
68 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
84
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
16 Heol-y-Twyn
Date
13 Oct 2010
Current
Potential
64
76
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
13 Oct 2010
64
76
Total Floor Area
69 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
17 Heol-y-Twyn
Date
19 Jan 2010
Current
Potential
65
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
19 Jan 2010
65
75
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
18 Heol-y-Twyn
Date
5 Nov 2009
Current
Potential
63
73
Property Type
House
Built Form
Mid-Terrace
Constructed
N/A
Certificate History
5 Nov 2009
63
73
Total Floor Area
70 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
19 Heol-y-Twyn
Date
31 Jan 2019
Current
Potential
69
85
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
31 Jan 2019
69
85
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
20 Heol-y-Twyn
Date
20 Feb 2019
Current
Potential
71
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
20 Feb 2019
71
74
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
21 Heol-Y-Twyn
Date
1 Aug 2023
Current
Potential
73
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
1 Aug 2023
73
75
Total Floor Area
60 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
21 Heol-y-Twyn
Date
30 Mar 2010
Current
Potential
69
79
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
30 Mar 2010
69
79
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
22 Heol-y-Twyn
Date
24 Aug 2020
Current
Potential
70
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
24 Aug 2020
70
76
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
23 Heol-y-Twyn
Date
17 Jun 2009
Current
Potential
66
80
Property Type
Flat
Built Form
Detached
Constructed
1967-1975
Certificate History
17 Jun 2009
66
80
Total Floor Area
60 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
24 Heol-Y-Twyn
Date
23 Jan 2025
Current
Potential
69
75
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
23 Jan 2025
69
75
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
24 Heol-y-Twyn
Date
28 Oct 2009
Current
Potential
72
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
N/A
Certificate History
28 Oct 2009
72
72
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
25 Heol-y-Twyn
Date
6 Jan 2011
Current
Potential
74
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
6 Jan 2011
74
74
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
26 Heol-Y-Twyn
Date
19 Nov 2024
Current
Potential
73
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
19 Nov 2024
73
78
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
26 Heol-y-Twyn
Date
1 Oct 2014
Current
Potential
74
79
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
1 Oct 2014
74
79
Total Floor Area
64 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
27 Heol-y-Twyn
Date
8 Apr 2018
Current
Potential
70
75
Property Type
Flat
Built Form
Detached
Constructed
1967-1975
Certificate History
8 Apr 2018
70
75
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
28 Heol-y-Twyn
Date
31 Mar 2015
Current
Potential
65
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
31 Mar 2015
65
72
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
29 Heol-y-Twyn
Date
28 Mar 2014
Current
Potential
66
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
28 Mar 2014
66
74
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
3 Heol-Y-Twyn
Date
7 Nov 2023
Current
Potential
69
83
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
7 Nov 2023
69
83
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
30 Heol-y-Twyn
Date
7 Oct 2009
Current
Potential
68
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
7 Oct 2009
68
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
31 Heol-y-Twyn
Date
22 Mar 2010
Current
Potential
62
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
22 Mar 2010
62
73
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
32 Heol-y-Twyn
Date
18 Aug 2009
Current
Potential
65
82
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
18 Aug 2009
65
82
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
33 Heol-Y-Twyn
Date
20 Apr 2023
Current
Potential
76
76
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
20 Apr 2023
76
76
Total Floor Area
64 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
33 Heol-y-Twyn
Date
26 Nov 2009
Current
Potential
59
69
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
26 Nov 2009
59
69
Total Floor Area
63 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
34 Heol-Y-Twyn
Date
14 Sep 2021
Current
Potential
69
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
14 Sep 2021
69
73
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
35 Heol-Y-Twyn
Date
13 Dec 2023
Current
Potential
73
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
13 Dec 2023
73
75
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
35 Heol-y-Twyn
Date
20 Oct 2008
Current
Potential
56
80
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
20 Oct 2008
56
80
Total Floor Area
65 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5 Heol-Y-Twyn
Date
7 Nov 2023
Current
Potential
71
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
7 Nov 2023
71
85
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
6 Heol-y-Twyn
Date
7 Mar 2012
Current
Potential
68
69
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
7 Mar 2012
68
69
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
9 HEOL-Y-TWYN, WATTSTOWN
Date
4 Mar 2021
Current
Potential
63
88
Property Type
House
Built Form
End-Terrace
Constructed
before 1900
Certificate History
4 Mar 2021
63
88
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Bands
Energy Performance Certificate Notes
There are a number of reasons that certificates are excluded from the dataset;
- The holder of the energy certificate has 'opted-out' of disclosure
- The certificate is excluded on the grounds of national security
- Certificates that are marked as 'cancelled' or 'not for issue'
Certificates are grouped together by the property reference identifier rather than the postal address with a view to showing the history of changes made to properties over time. Sometimes, one property may exist as multiple entries in the table instead and this is as a result of inconsistent building references being used on each prepared certificate.
Contains public sector information licensed under the Open Government Licence v3.0.
Contains Royal Mail data © Royal Mail copyright and Database right 2025.