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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
William Street, CAERPHILLY, CF83 8FX

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 William Street, CF83 8FX 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 William Street, CAERPHILLY, CF83 8FX
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
52 William Street, Trethomas
Date
10 Oct 2016
Current
Potential
53
76
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
10 Oct 2016
53
76
Total Floor Area
93 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
53 William Street, Trethomas
Date
4 Jun 2025
Current
Potential
70
84
Property Type
Bungalow
Built Form
Detached
Constructed
1983-1990
+
Certificate History
4 Jun 2025
70
84
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
55 William Street, Trethomas
Date
12 Oct 2015
Current
Potential
62
83
Property Type
Bungalow
Built Form
Detached
Constructed
1991-1995
+
Certificate History
12 Oct 2015
62
83
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
56 William Street, Trethomas
Date
16 Jan 2024
Current
Potential
43
79
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
16 Jan 2024
43
79
9 Aug 2009
67
73
Total Floor Area
102 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
60 William Street, Trethomas
Date
24 Jul 2017
Current
Potential
59
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
24 Jul 2017
59
85
Total Floor Area
77 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
66 William Street, Trethomas
Date
25 Sep 2014
Current
Potential
66
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
25 Sep 2014
66
87
Total Floor Area
82 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
68 William Street, Trethomas
Date
25 Nov 2014
Current
Potential
61
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
25 Nov 2014
61
84
Total Floor Area
94 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
70 WILLIAM STREET, TRETHOMAS
Date
21 Oct 2020
Current
Potential
57
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
21 Oct 2020
57
82
Total Floor Area
70 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
72 William Street, Trethomas
Date
5 Mar 2025
Current
Potential
62
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
5 Mar 2025
62
84
11 Jan 2012
41
60
Total Floor Area
83 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
74 William Street, Trethomas
Date
10 Apr 2013
Current
Potential
58
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
10 Apr 2013
58
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
78 William Street, Trethomas
Date
14 Jun 2023
Current
Potential
73
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
14 Jun 2023
73
85
21 Aug 2020
73
87
20 Oct 2010
70
70
Total Floor Area
112 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
84 William Street, Trethomas
Date
10 Jul 2023
Current
Potential
70
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
10 Jul 2023
70
89
1 Oct 2019
69
88
10 Sep 2012
33
77
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
90 William Street, Trethomas
Date
23 Nov 2018
Current
Potential
69
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
23 Nov 2018
69
85
8 Sep 2013
53
86
6 Jun 2013
56
89
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
92 William Street, Trethomas
Date
14 May 2014
Current
Potential
62
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
14 May 2014
62
87
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
94 William Street, Trethomas
Date
7 Oct 2013
Current
Potential
63
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
7 Oct 2013
63
85
Total Floor Area
92 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
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.

Contains public sector information licensed under the Open Government Licence v3.0.
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