PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Mary Street, CAERPHILLY, CF83 8HN
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 Mary Street, CF83 8HN 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 Mary Street, CAERPHILLY, CF83 8HN
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Mary Street, Trethomas
Date
13 Nov 2013
Current
Potential
28
84
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
13 Nov 2013
28
84
Total Floor Area
94 sq m
Current CO2 Emissions Level
8.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
94
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
3
Address
10 Mary Street, Trethomas
Date
6 Feb 2019
Current
Potential
74
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
6 Feb 2019
74
89
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
11 Mary Street, Trethomas
Date
26 Jun 2017
Current
Potential
62
86
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
26 Jun 2017
62
86
Total Floor Area
87 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
12 Mary Street, Trethomas
Date
7 Apr 2016
Current
Potential
52
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
7 Apr 2016
52
80
1 Oct 2013
45
81
Total Floor Area
82 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
13 Mary Street, Trethomas
Date
9 Nov 2013
Current
Potential
47
84
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
9 Nov 2013
47
84
Total Floor Area
99 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
15 Mary Street, Trethomas
Date
20 Sep 2024
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
20 Sep 2024
71
86
5 Jul 2011
54
67
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
16 Mary Street, Trethomas
Date
23 Jul 2023
Current
Potential
62
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
23 Jul 2023
62
83
Total Floor Area
84 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
17 Mary Street, Trethomas
Date
25 Apr 2016
Current
Potential
48
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
25 Apr 2016
48
85
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
79
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
19 Mary Street, Trethomas
Date
20 Jul 2022
Current
Potential
41
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
20 Jul 2022
41
86
10 Jul 2022
35
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
9.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
110
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
20 MARY STREET, TRETHOMAS
Date
27 Sep 2020
Current
Potential
64
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
27 Sep 2020
64
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
3
Address
21 Mary Street, Trethomas
Date
8 Jan 2014
Current
Potential
45
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
8 Jan 2014
45
83
26 Mar 2012
52
66
Total Floor Area
79 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
68
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
22 Mary Street, Trethomas
Date
19 Sep 2018
Current
Potential
62
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
19 Sep 2018
62
78
Total Floor Area
98 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
23 Mary Street, Trethomas
Date
7 Jul 2020
Current
Potential
60
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
7 Jul 2020
60
78
2 Nov 2009
36
43
8 Apr 2009
45
57
Total Floor Area
83 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
24 Mary Street, Trethomas
Date
20 Jan 2015
Current
Potential
51
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
20 Jan 2015
51
85
Total Floor Area
90 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
25 Mary Street, Trethomas
Date
23 Sep 2019
Current
Potential
67
87
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
23 Sep 2019
67
87
11 Mar 2009
61
68
Total Floor Area
73 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
27 Mary Street, Trethomas
Date
15 Oct 2013
Current
Potential
64
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
15 Oct 2013
64
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
28 Mary Street, Trethomas
Date
22 Nov 2016
Current
Potential
64
87
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
22 Nov 2016
64
87
Total Floor Area
86 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
29 Mary Street, Trethomas
Date
1 Dec 2022
Current
Potential
69
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
1 Dec 2022
69
85
28 Jan 2013
61
78
Total Floor Area
102 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
30 Mary Street, Trethomas
Date
10 Nov 2014
Current
Potential
61
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2014
61
84
Total Floor Area
82 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
31 Mary Street, Trethomas
Date
11 Nov 2021
Current
Potential
41
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
11 Nov 2021
41
81
4 Mar 2010
43
70
Total Floor Area
94 sq m
Current CO2 Emissions Level
7.9
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
84
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
32 Mary Street, Trethomas
Date
21 Feb 2024
Current
Potential
64
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
21 Feb 2024
64
82
21 Jul 2014
49
84
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
34 Mary Street, Trethomas
Date
3 Apr 2023
Current
Potential
69
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
3 Apr 2023
69
88
11 Oct 2010
54
56
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
35 Mary Street, Trethomas
Date
14 Mar 2016
Current
Potential
43
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
14 Mar 2016
43
81
Total Floor Area
95 sq m
Current CO2 Emissions Level
7.5
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
79
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
37 Mary Street, Trethomas
Date
7 Sep 2015
Current
Potential
65
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
7 Sep 2015
65
88
11 Jul 2011
63
69
Total Floor Area
87 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
39 Mary Street, Trethomas
Date
21 Apr 2017
Current
Potential
47
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
21 Apr 2017
47
80
Total Floor Area
77 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
77
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
40 Mary Street, Trethomas
Date
15 Jul 2020
Current
Potential
66
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
15 Jul 2020
66
86
1 Jul 2010
51
61
Total Floor Area
90 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
41 Mary Street, Trethomas
Date
18 Jan 2017
Current
Potential
61
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
18 Jan 2017
61
78
Total Floor Area
78 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
43 Mary Street, Trethomas
Date
13 Jul 2017
Current
Potential
59
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
13 Jul 2017
59
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
44 Mary Street, Trethomas
Date
15 Mar 2017
Current
Potential
62
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
15 Mar 2017
62
88
Total Floor Area
86 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
46 Mary Street, Trethomas
Date
9 Jan 2014
Current
Potential
47
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
9 Jan 2014
47
84
Total Floor Area
78 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
47 Mary Street, Trethomas
Date
12 Nov 2024
Current
Potential
65
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
12 Nov 2024
65
83
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
48 Mary Street, Trethomas
Date
22 Feb 2024
Current
Potential
59
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
22 Feb 2024
59
79
6 Apr 2014
58
83
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
49 Mary Street, Trethomas
Date
26 Aug 2021
Current
Potential
39
81
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
26 Aug 2021
39
81
Total Floor Area
87 sq m
Current CO2 Emissions Level
8.8
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
101
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
3
Address
5 Mary Street, Trethomas
Date
31 Jan 2017
Current
Potential
42
78
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
31 Jan 2017
42
78
7 Nov 2016
59
85
Total Floor Area
72 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
89
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
50 MARY STREET, TRETHOMAS
Date
22 Apr 2021
Current
Potential
61
86
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
22 Apr 2021
61
86
Total Floor Area
96 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
6 Mary Street, Trethomas
Date
17 Jan 2023
Current
Potential
67
80
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
17 Jan 2023
67
80
12 Sep 2018
8
73
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
7 Mary Street, Trethomas
Date
14 Nov 2012
Current
Potential
52
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
14 Nov 2012
52
79
Total Floor Area
78 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
8 Mary Street, Trethomas
Date
17 Jul 2023
Current
Potential
74
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
17 Jul 2023
74
90
9 Feb 2011
52
66
Total Floor Area
84 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
9 Mary Street, Trethomas
Date
9 Feb 2017
Current
Potential
36
77
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
9 Feb 2017
36
77
Total Floor Area
121 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
83
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
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.