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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
St. Mary Street, NEWPORT, NP20 4DG

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 St. Mary Street, NP20 4DG 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 St. Mary Street, NEWPORT, NP20 4DG
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 St. Mary Street
Date
7 Aug 2018
Current
Potential
64
89
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
7 Aug 2018
64
89
2 Aug 2009
64
67
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
12 ST MARY STREET, NEWPORT
Date
12 Mar 2021
Current
Potential
77
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
12 Mar 2021
77
91
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
12 St. Mary Street
Date
4 May 2016
Current
Potential
55
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
4 May 2016
55
80
Total Floor Area
73 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
13 St. Mary Street
Date
5 Dec 2018
Current
Potential
65
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
5 Dec 2018
65
88
Total Floor Area
73 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
14 St. Mary Street
Date
30 Nov 2024
Current
Potential
66
87
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
30 Nov 2024
66
87
3 Dec 2011
59
71
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
15 St. Mary Street
Date
14 Dec 2016
Current
Potential
62
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
14 Dec 2016
62
89
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
16 St. Mary Street
Date
24 Aug 2009
Current
Potential
46
64
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
24 Aug 2009
46
64
Total Floor Area
66 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
82
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
17 St. Mary Street
Date
4 Mar 2020
Current
Potential
59
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
4 Mar 2020
59
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
18 St. Mary Street
Date
17 Aug 2009
Current
Potential
51
51
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
17 Aug 2009
51
51
Total Floor Area
72 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
82
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
20 ST. MARY STREET
Date
18 May 2021
Current
Potential
54
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
18 May 2021
54
87
Total Floor Area
88 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
20 St. Mary Street
Date
4 Sep 2011
Current
Potential
63
68
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
4 Sep 2011
63
68
Total Floor Area
100 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
21 St. Mary Street
Date
8 Feb 2022
Current
Potential
64
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
8 Feb 2022
64
85
6 May 2010
47
57
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
First Floor Flat, 19 St. Mary Street
Date
19 Aug 2024
Current
Potential
63
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
19 Aug 2024
63
78
Total Floor Area
61 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Ground Floor Flat, 19 St. Mary Street
Date
19 Aug 2024
Current
Potential
66
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
19 Aug 2024
66
77
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
3
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.