PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Napier Road, ISLEWORTH, TW7 7HP
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 Napier Road, TW7 7HP 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 Napier Road, ISLEWORTH, TW7 7HP
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Napier Road
Date
17 Jun 2009
Current
Potential
52
60
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
17 Jun 2009
52
60
Total Floor Area
71 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
1 NAPIER ROAD, ISLEWORTH
Date
8 Mar 2021
Current
Potential
61
89
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
8 Mar 2021
61
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
13 Napier Road
Date
11 Jun 2020
Current
Potential
68
82
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
11 Jun 2020
68
82
21 Jul 2011
36
44
Total Floor Area
99 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
23 Napier Road
Date
26 Nov 2019
Current
Potential
62
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
26 Nov 2019
62
85
19 Nov 2009
70
70
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
25 Napier Road
Date
11 Jun 2024
Current
Potential
72
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
11 Jun 2024
72
83
9 Feb 2012
58
66
Total Floor Area
114 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
27 Napier Road
Date
3 Dec 2012
Current
Potential
59
79
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
3 Dec 2012
59
79
Total Floor Area
103 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
29 Napier Road
Date
30 May 2017
Current
Potential
57
80
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
30 May 2017
57
80
Total Floor Area
104 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
3 Napier Road
Date
25 Apr 2024
Current
Potential
68
85
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
25 Apr 2024
68
85
1 May 2014
68
89
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
34 Napier Road
Date
13 Oct 2015
Current
Potential
58
82
Property Type
House
Built Form
End-Terrace
Constructed
before 1900
Certificate History
13 Oct 2015
58
82
Total Floor Area
118 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
36 Napier Road
Date
15 Oct 2023
Current
Potential
58
85
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
15 Oct 2023
58
85
8 Oct 2012
41
81
Total Floor Area
87 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
38 Napier Road
Date
17 Jun 2014
Current
Potential
34
63
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
17 Jun 2014
34
63
Total Floor Area
111 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
39 Napier Road
Date
26 Mar 2018
Current
Potential
65
85
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
26 Mar 2018
65
85
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
40 Napier Road
Date
14 Feb 2011
Current
Potential
59
61
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
14 Feb 2011
59
61
Total Floor Area
90 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
41 Napier Road
Date
3 Feb 2022
Current
Potential
68
87
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
3 Feb 2022
68
87
31 Jul 2009
59
71
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
45 Napier Road
Date
23 Mar 2018
Current
Potential
39
81
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
23 Mar 2018
39
81
Total Floor Area
93 sq m
Current CO2 Emissions Level
9.3
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
100
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
2
Address
46 Napier Road
Date
8 Feb 2022
Current
Potential
75
80
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
8 Feb 2022
75
80
Total Floor Area
191 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
47 Napier Road
Date
11 Sep 2024
Current
Potential
57
78
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
11 Sep 2024
57
78
12 Dec 2009
43
58
29 Jul 2009
44
57
Total Floor Area
87 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
49 Napier Road
Date
27 Feb 2020
Current
Potential
73
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
27 Feb 2020
73
83
6 Feb 2015
5
82
Total Floor Area
133 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
51 Napier Road
Date
11 Jul 2019
Current
Potential
55
76
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
11 Jul 2019
55
76
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
55 Napier Road
Date
20 Dec 2016
Current
Potential
46
73
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
20 Dec 2016
46
73
Total Floor Area
110 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
57 Napier Road
Date
22 Jun 2014
Current
Potential
41
90
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
22 Jun 2014
41
90
Total Floor Area
80 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
72
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
61 Napier Road
Date
11 Jan 2012
Current
Potential
56
67
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
11 Jan 2012
56
67
Total Floor Area
98 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
4.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
67 Napier Road
Date
4 Mar 2014
Current
Potential
77
85
Property Type
House
Built Form
Detached
Constructed
2007 onwards
Certificate History
4 Mar 2014
77
85
26 Oct 2011
53
68
Total Floor Area
189 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
21
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
9 Napier Road
Date
23 Mar 2023
Current
Potential
56
82
Property Type
House
Built Form
End-Terrace
Constructed
before 1900
Certificate History
23 Mar 2023
56
82
21 Jul 2011
46
50
Total Floor Area
59 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
3
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.