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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Alwyn Avenue, LONDON, W4 4PA

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 Alwyn Avenue, W4 4PA 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 Alwyn Avenue, LONDON, W4 4PA
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Alwyn Avenue
Date
11 Oct 2017
Current
Potential
70
76
Property Type
House
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
11 Oct 2017
70
76
17 May 2015
58
79
Total Floor Area
281 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
5.9
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
4
Address
13 Alwyn Avenue
Date
30 May 2022
Current
Potential
61
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
30 May 2022
61
83
11 Jun 2012
62
81
26 Sep 2010
53
59
Total Floor Area
213 sq m
Current CO2 Emissions Level
8.2
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
15 ALWYN AVENUE, CHISWICK
Date
30 Sep 2020
Current
Potential
55
78
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
30 Sep 2020
55
78
Total Floor Area
184 sq m
Current CO2 Emissions Level
8.5
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
23 Alwyn Avenue
Date
19 Apr 2017
Current
Potential
62
79
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
19 Apr 2017
62
79
Total Floor Area
176 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
27 Alwyn Avenue
Date
22 May 2019
Current
Potential
54
76
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
22 May 2019
54
76
Total Floor Area
179 sq m
Current CO2 Emissions Level
8.3
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
3
Address
29 Alwyn Avenue
Date
28 Sep 2021
Current
Potential
57
80
Property Type
House
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
28 Sep 2021
57
80
Total Floor Area
167 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
31 Alwyn Avenue
Date
6 Aug 2020
Current
Potential
51
73
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
6 Aug 2020
51
73
6 May 2009
47
52
Total Floor Area
194 sq m
Current CO2 Emissions Level
9.4
Potential CO2 Emissions Level
4.9
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
33 Alwyn Avenue
Date
17 May 2012
Current
Potential
47
66
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
17 May 2012
47
66
Total Floor Area
178 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
6.3
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
35 Alwyn Avenue
Date
3 Aug 2020
Current
Potential
59
74
Property Type
House
Built Form
End-Terrace
Constructed
before 1900
+
Certificate History
3 Aug 2020
59
74
26 Jun 2009
50
56
Total Floor Area
164 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
37 Alwyn Avenue
Date
5 Sep 2013
Current
Potential
48
81
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
5 Sep 2013
48
81
Total Floor Area
187 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
49 Alwyn Avenue
Date
4 Jul 2018
Current
Potential
61
83
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
4 Jul 2018
61
83
Total Floor Area
151 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
53 Alwyn Avenue
Date
6 Oct 2021
Current
Potential
67
82
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
6 Oct 2021
67
82
Total Floor Area
194 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
7 Alwyn Avenue
Date
12 Dec 2018
Current
Potential
46
71
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
12 Dec 2018
46
71
5 Aug 2009
31
40
Total Floor Area
203 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
5.7
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
4
Address
9 Alwyn Avenue
Date
5 Jan 2009
Current
Potential
43
56
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
5 Jan 2009
43
56
Total Floor Area
192 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
9.9
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
Ground Floor Flat, 49 Alwyn Avenue
Date
4 Aug 2013
Current
Potential
53
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
4 Aug 2013
53
75
Total Floor Area
67 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
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.