PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Colwyn Avenue, SWANSEA, SA1 7EH

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 Colwyn Avenue, SA1 7EH 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 Colwyn Avenue, SWANSEA, SA1 7EH
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
16 Colwyn Avenue, Winch Wen
Date
14 Apr 2024
Current
Potential
61
85
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
14 Apr 2024
61
85
3 Feb 2011
63
76
Total Floor Area
108 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
18 Colwyn Avenue, Winch Wen
Date
23 Apr 2018
Current
Potential
72
87
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
23 Apr 2018
72
87
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
20 Colwyn Avenue, Winch Wen
Date
28 May 2018
Current
Potential
65
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
28 May 2018
65
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
22 Colwyn Avenue, Winch Wen
Date
5 Aug 2013
Current
Potential
38
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
5 Aug 2013
38
86
Total Floor Area
87 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
78
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
24 Colwyn Avenue, Winch Wen
Date
4 Aug 2023
Current
Potential
85
88
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
4 Aug 2023
85
88
15 Nov 2018
81
84
9 Jul 2015
66
85
Total Floor Area
87 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
15
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
27 Colwyn Avenue, Winch Wen
Date
7 Jan 2013
Current
Potential
70
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
7 Jan 2013
70
84
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
30 Colwyn Avenue, Winch Wen
Date
22 Oct 2013
Current
Potential
39
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
22 Oct 2013
39
86
31 Mar 2009
61
75
Total Floor Area
86 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
78
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
32 Colwyn Avenue, Winch Wen
Date
1 Nov 2008
Current
Potential
61
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
1 Nov 2008
61
75
Total Floor Area
84 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
33 Colwyn Avenue, Winch Wen
Date
17 Jan 2014
Current
Potential
55
76
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
17 Jan 2014
55
76
Total Floor Area
102 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
34 Colwyn Avenue, Winch Wen
Date
24 Jun 2022
Current
Potential
65
85
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
24 Jun 2022
65
85
22 Jan 2014
44
80
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
35 Colwyn Avenue, Winch Wen
Date
13 Jul 2023
Current
Potential
66
84
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
13 Jul 2023
66
84
17 May 2017
41
84
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
36 Colwyn Avenue, Winch Wen
Date
9 Oct 2024
Current
Potential
63
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
9 Oct 2024
63
83
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
38 COLWYN AVENUE, WINCH WEN
Date
17 Jun 2021
Current
Potential
72
87
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
17 Jun 2021
72
87
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
38 Colwyn Avenue, Winch Wen
Date
12 Jan 2011
Current
Potential
62
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
12 Jan 2011
62
75
Total Floor Area
73 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
39 Colwyn Avenue, Winch Wen
Date
14 Feb 2013
Current
Potential
67
81
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
14 Feb 2013
67
81
Total Floor Area
84 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
40 Colwyn Avenue, Winch Wen
Date
8 Nov 2010
Current
Potential
66
76
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
8 Nov 2010
66
76
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
41 Colwyn Avenue, Winch Wen
Date
22 Mar 2013
Current
Potential
66
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
22 Mar 2013
66
86
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
42 Colwyn Avenue, Winch Wen
Date
7 May 2023
Current
Potential
63
81
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
7 May 2023
63
81
11 Oct 2009
63
74
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
45 Colwyn Avenue, Winch Wen
Date
1 Dec 2009
Current
Potential
71
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
1 Dec 2009
71
75
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
46 Colwyn Avenue, Winch Wen
Date
9 Jan 2013
Current
Potential
68
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
9 Jan 2013
68
82
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.4
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
48 Colwyn Avenue, Winch Wen
Date
24 May 2010
Current
Potential
70
72
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
24 May 2010
70
72
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
49 Colwyn Avenue, Winch Wen
Date
10 Feb 2013
Current
Potential
58
85
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
10 Feb 2013
58
85
Total Floor Area
84 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
51 Colwyn Avenue, Winch Wen
Date
14 Dec 2013
Current
Potential
44
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
14 Dec 2013
44
79
Total Floor Area
97 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
55 Colwyn Avenue, Winch Wen
Date
4 May 2023
Current
Potential
70
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
4 May 2023
70
86
6 May 2013
49
86
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
61 Colwyn Avenue, Winch Wen
Date
13 Feb 2023
Current
Potential
72
87
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
13 Feb 2023
72
87
12 Aug 2012
70
86
16 May 2010
70
75
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
63 Colwyn Avenue, Winch Wen
Date
8 Mar 2018
Current
Potential
71
85
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
8 Mar 2018
71
85
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
65 Colwyn Avenue, Winch Wen
Date
10 Aug 2023
Current
Potential
83
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
10 Aug 2023
83
86
7 Mar 2018
62
82
Total Floor Area
84 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
17
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
67 Colwyn Avenue, Winch Wen
Date
26 Nov 2018
Current
Potential
70
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
26 Nov 2018
70
84
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Bands

A
92 - 100
B
81 - 91
C
69 - 80
D
55 -68
E
39 -54
F
54 -38
G
0 - 20

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.

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Contains Royal Mail data © Royal Mail copyright and Database right 2025.