PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Southerndown Avenue, SWANSEA, SA3 5EL
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 Southerndown Avenue, SA3 5EL 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 Southerndown Avenue, SWANSEA, SA3 5EL
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Southerndown Avenue, Mayals
Date
16 Jan 2025
Current
Potential
74
80
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
16 Jan 2025
74
80
Total Floor Area
249 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
17 Southerndown Avenue, Mayals
Date
21 Feb 2014
Current
Potential
50
69
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
21 Feb 2014
50
69
Total Floor Area
178 sq m
Current CO2 Emissions Level
9.0
Potential CO2 Emissions Level
5.5
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
21 Southerndown Avenue, Mayals
Date
30 Sep 2019
Current
Potential
47
79
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
30 Sep 2019
47
79
Total Floor Area
146 sq m
Current CO2 Emissions Level
9.0
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
24 Southerndown Avenue, Mayals
Date
12 Sep 2022
Current
Potential
74
83
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
12 Sep 2022
74
83
3 Sep 2013
65
84
3 Jul 2013
60
82
2 Oct 2008
63
72
Total Floor Area
139 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
29 Southerndown Avenue, Mayals
Date
2 Nov 2010
Current
Potential
49
70
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
2 Nov 2010
49
70
Total Floor Area
104 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
30 Southerndown Avenue, Mayals
Date
4 Aug 2016
Current
Potential
65
79
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
4 Aug 2016
65
79
Total Floor Area
149 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
31 Southerndown Avenue, Mayals
Date
15 Oct 2008
Current
Potential
63
69
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
15 Oct 2008
63
69
Total Floor Area
133 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
4.9
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
32 Southerndown Avenue, Mayals
Date
18 Sep 2019
Current
Potential
65
82
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
18 Sep 2019
65
82
Total Floor Area
136 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
33 Southerndown Avenue, Mayals
Date
11 May 2015
Current
Potential
53
81
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
Certificate History
11 May 2015
53
81
Total Floor Area
90 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
34 Southerndown Avenue, Mayals
Date
11 Mar 2024
Current
Potential
64
82
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
11 Mar 2024
64
82
Total Floor Area
154 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
35 Southerndown Avenue, Mayals
Date
24 Sep 2024
Current
Potential
60
73
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
24 Sep 2024
60
73
19 Mar 2014
43
79
8 Mar 2014
46
80
Total Floor Area
159 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
36 Southerndown Avenue, Mayals
Date
10 Feb 2010
Current
Potential
49
70
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
10 Feb 2010
49
70
Total Floor Area
147 sq m
Current CO2 Emissions Level
7.6
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
39 Southerndown Avenue, Mayals
Date
10 Oct 2014
Current
Potential
44
81
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
10 Oct 2014
44
81
Total Floor Area
159 sq m
Current CO2 Emissions Level
9.5
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
40 Southerndown Avenue, Mayals
Date
14 Jun 2017
Current
Potential
61
77
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
14 Jun 2017
61
77
Total Floor Area
160 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
42 Southerndown Avenue, Mayals
Date
29 Jun 2017
Current
Potential
68
79
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
29 Jun 2017
68
79
Total Floor Area
143 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
43 Southerndown Avenue, Mayals
Date
5 Feb 2014
Current
Potential
51
77
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
5 Feb 2014
51
77
Total Floor Area
147 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
44 Southerndown Avenue, Mayals
Date
14 Sep 2020
Current
Potential
81
85
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
14 Sep 2020
81
85
Total Floor Area
173 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
20
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
45 Southerndown Avenue, Mayals
Date
23 Mar 2024
Current
Potential
77
83
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
23 Mar 2024
77
83
2 Sep 2012
63
81
Total Floor Area
233 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
47 Southerndown Avenue, Mayals
Date
28 Apr 2024
Current
Potential
65
75
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
28 Apr 2024
65
75
Total Floor Area
181 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
4.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
49 Southerndown Avenue, Mayals
Date
5 Mar 2010
Current
Potential
67
67
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
5 Mar 2010
67
67
Total Floor Area
179 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
6.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
50 Southerndown Avenue, Mayals
Date
22 Oct 2018
Current
Potential
36
78
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
22 Oct 2018
36
78
Total Floor Area
98 sq m
Current CO2 Emissions Level
8.4
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
86
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
53 Southerndown Avenue, Mayals
Date
18 Oct 2016
Current
Potential
57
79
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
18 Oct 2016
57
79
Total Floor Area
159 sq m
Current CO2 Emissions Level
7.5
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
9 Southerndown Avenue, Mayals
Date
6 May 2013
Current
Potential
62
70
Property Type
House
Built Form
Detached
Constructed
1991-1995
Certificate History
6 May 2013
62
70
Total Floor Area
238 sq m
Current CO2 Emissions Level
8.3
Potential CO2 Emissions Level
6.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
3
Address
Coed Lan, Southerndown Avenue
Date
24 May 2017
Current
Potential
70
77
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
24 May 2017
70
77
Total Floor Area
296 sq m
Current CO2 Emissions Level
9.2
Potential CO2 Emissions Level
7.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
Greenwood Lee, Southerndown Avenue
Date
16 May 2025
Current
Potential
71
77
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
16 May 2025
71
77
30 Apr 2015
56
69
Total Floor Area
173 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
7
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.