PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Gwili Terrace, SWANSEA, SA1 6TN
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 Gwili Terrace, SA1 6TN 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 Gwili Terrace, SWANSEA, SA1 6TN
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
38 Gwili Terrace, Mayhill
Date
11 Dec 2017
Current
Potential
44
76
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
11 Dec 2017
44
76
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
68
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
39 Gwili Terrace, Mayhill
Date
8 Jun 2023
Current
Potential
72
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
8 Jun 2023
72
86
10 Apr 2013
61
88
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
40 Gwili Terrace, Mayhill
Date
5 Nov 2013
Current
Potential
43
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
5 Nov 2013
43
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
76
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
41 Gwili Terrace, Mayhill
Date
19 Dec 2022
Current
Potential
73
88
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
19 Dec 2022
73
88
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
43 Gwili Terrace, Mayhill
Date
29 Sep 2021
Current
Potential
62
76
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
29 Sep 2021
62
76
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
45 Gwili Terrace, Mayhill
Date
4 Apr 2018
Current
Potential
73
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
4 Apr 2018
73
86
9 Jun 2017
60
86
Total Floor Area
78 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
46 Gwili Terrace, Mayhill
Date
9 Aug 2020
Current
Potential
70
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
9 Aug 2020
70
87
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
48 Gwili Terrace, Mayhill
Date
13 Jun 2011
Current
Potential
72
73
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
13 Jun 2011
72
73
Total Floor Area
69 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
49 Gwili Terrace, Mayhill
Date
12 Dec 2012
Current
Potential
57
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
12 Dec 2012
57
86
10 Feb 2011
62
77
Total Floor Area
75 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
50 Gwili Terrace, Mayhill
Date
21 Oct 2019
Current
Potential
70
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
21 Oct 2019
70
89
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
51 Gwili Terrace, Mayhill
Date
3 Apr 2013
Current
Potential
72
86
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
3 Apr 2013
72
86
30 Nov 2012
72
87
26 Oct 2009
72
76
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
52 Gwili Terrace, Mayhill
Date
5 Aug 2010
Current
Potential
68
76
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
5 Aug 2010
68
76
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
53 Gwili Terrace, Mayhill
Date
31 Mar 2022
Current
Potential
69
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
31 Mar 2022
69
83
1 Aug 2010
68
77
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
54 Gwili Terrace, Mayhill
Date
28 May 2013
Current
Potential
66
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
28 May 2013
66
83
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
55 Gwili Terrace, Mayhill
Date
8 Sep 2009
Current
Potential
62
76
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
8 Sep 2009
62
76
Total Floor Area
84 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
56 Gwili Terrace, Mayhill
Date
10 Sep 2013
Current
Potential
66
85
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
10 Sep 2013
66
85
3 Apr 2013
67
86
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
57 Gwili Terrace, Mayhill
Date
27 Aug 2020
Current
Potential
68
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
27 Aug 2020
68
84
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
58 Gwili Terrace, Mayhill
Date
3 Apr 2013
Current
Potential
69
84
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
3 Apr 2013
69
84
30 Jan 2013
70
83
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
59 Gwili Terrace, Mayhill
Date
3 Apr 2013
Current
Potential
70
84
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
3 Apr 2013
70
84
27 Oct 2011
71
73
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
60 Gwili Terrace, Mayhill
Date
18 Dec 2012
Current
Potential
60
81
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
18 Dec 2012
60
81
Total Floor Area
90 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
61 Gwili Terrace, Mayhill
Date
3 Apr 2013
Current
Potential
57
86
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
3 Apr 2013
57
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
62 Gwili Terrace, Mayhill
Date
7 May 2009
Current
Potential
42
75
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
7 May 2009
42
75
Total Floor Area
83 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
63 Gwili Terrace, Mayhill
Date
2 Apr 2018
Current
Potential
71
85
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
2 Apr 2018
71
85
30 Apr 2009
65
76
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
64 Gwili Terrace, Mayhill
Date
17 May 2011
Current
Potential
71
72
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
17 May 2011
71
72
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
65 Gwili Terrace, Mayhill
Date
21 Jul 2020
Current
Potential
66
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
21 Jul 2020
66
88
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
66 Gwili Terrace, Mayhill
Date
21 Feb 2013
Current
Potential
70
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
21 Feb 2013
70
89
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
67 Gwili Terrace, Mayhill
Date
2 Apr 2018
Current
Potential
68
85
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
2 Apr 2018
68
85
26 Jul 2009
70
78
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
68 Gwili Terrace, Mayhill
Date
27 Nov 2023
Current
Potential
71
88
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
27 Nov 2023
71
88
1 Mar 2011
58
75
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
69 Gwili Terrace, Mayhill
Date
12 Oct 2008
Current
Potential
69
76
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
12 Oct 2008
69
76
Total Floor Area
76 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
70 Gwili Terrace, Mayhill
Date
14 Aug 2024
Current
Potential
74
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
14 Aug 2024
74
89
4 Jan 2013
69
86
17 Feb 2010
77
78
Total Floor Area
68 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
71 Gwili Terrace, Mayhill
Date
6 Jan 2014
Current
Potential
53
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
6 Jan 2014
53
82
3 Apr 2013
57
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
72 Gwili Terrace, Mayhill
Date
3 Jun 2009
Current
Potential
52
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
3 Jun 2009
52
75
Total Floor Area
71 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
70
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
73 Gwili Terrace, Mayhill
Date
20 Apr 2011
Current
Potential
57
70
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
20 Apr 2011
57
70
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
74 Gwili Terrace, Mayhill
Date
3 Jul 2024
Current
Potential
73
88
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
3 Jul 2024
73
88
23 Feb 2013
71
85
12 Nov 2008
47
75
Total Floor Area
69 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
75 Gwili Terrace, Mayhill
Date
1 Jul 2020
Current
Potential
70
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
1 Jul 2020
70
89
29 Oct 2008
51
76
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
76 Gwili Terrace, Mayhill
Date
16 Oct 2018
Current
Potential
70
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
16 Oct 2018
70
88
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
77 Gwili Terrace, Mayhill
Date
4 Oct 2010
Current
Potential
76
77
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
4 Oct 2010
76
77
Total Floor Area
69 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
32
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.