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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
William Street, NEWPORT, NP11 7GY

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, NP11 7GY 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, NEWPORT, NP11 7GY
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 William Street, Cwmfelinfach, Ynysddu
Date
10 Jun 2010
Current
Potential
46
59
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
10 Jun 2010
46
59
Total Floor Area
79 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
4.6
CO2 per sq m per Year
77
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
15 William Street, Cwmfelinfach, Ynysddu
Date
3 Nov 2016
Current
Potential
58
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
3 Nov 2016
58
85
24 Nov 2014
41
77
24 Nov 2014
41
77
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
17 William Street, Cwmfelinfach
Date
6 Dec 2023
Current
Potential
65
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
6 Dec 2023
65
88
7 Apr 2013
51
81
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
19 William Street, Cwmfelinfach, Ynysddu
Date
26 Jun 2013
Current
Potential
57
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
26 Jun 2013
57
79
Total Floor Area
117 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
2 WILLIAM STREET, CWMFELINFACH
Date
4 Jul 2021
Current
Potential
46
75
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
4 Jul 2021
46
75
Total Floor Area
83 sq m
Current CO2 Emissions Level
6.6
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
2 William Street, Cwmfelinfach, Ynysddu
Date
10 Apr 2010
Current
Potential
54
64
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
10 Apr 2010
54
64
Total Floor Area
76 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
20 William Street, Cwmfelinfach, Ynysddu
Date
21 Apr 2012
Current
Potential
40
88
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
21 Apr 2012
40
88
Total Floor Area
105 sq m
Current CO2 Emissions Level
7.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
23 William Street, Cwmfelinfach, Ynysddu
Date
19 Jan 2015
Current
Potential
71
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
19 Jan 2015
71
89
Total Floor Area
103 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
25 William Street, Cwmfelinfach, Ynysddu
Date
19 Jan 2015
Current
Potential
69
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
19 Jan 2015
69
85
Total Floor Area
102 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
3 William Street, Cwmfelinfach, Ynysddu
Date
30 Aug 2016
Current
Potential
40
76
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
30 Aug 2016
40
76
10 Apr 2010
63
66
Total Floor Area
79 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
91
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
4 WILLIAM STREET, CWMFELINFACH
Date
5 Nov 2020
Current
Potential
60
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
5 Nov 2020
60
78
Total Floor Area
77 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
4 William Street, Cwmfelinfach, Ynysddu
Date
3 May 2017
Current
Potential
1
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
3 May 2017
1
77
Total Floor Area
80 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
139
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
5 William Street, Cwmfelinfach
Date
5 Dec 2024
Current
Potential
70
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
5 Dec 2024
70
87
2 Apr 2012
44
77
Total Floor Area
94 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
6 William Street, Cwmfelinfach
Date
4 Jan 2022
Current
Potential
53
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
4 Jan 2022
53
83
Total Floor Area
78 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
7 William Street, Cwmfelinfach
Date
5 Oct 2023
Current
Potential
59
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
5 Oct 2023
59
77
1 Jul 2013
66
86
Total Floor Area
94 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
57
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.
Contains Royal Mail data © Royal Mail copyright and Database right 2025.