PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Knebworth Avenue, LONDON, E17 5AH
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 Knebworth Avenue, E17 5AH 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 Knebworth Avenue, LONDON, E17 5AH
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Knebworth Avenue
Date
1 Jun 2024
Current
Potential
65
86
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
1 Jun 2024
65
86
27 Nov 2008
47
60
Total Floor Area
101 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
11 KNEBWORTH AVENUE, WALTHAMSTOW
Date
26 Jan 2021
Current
Potential
75
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
26 Jan 2021
75
84
Total Floor Area
141 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
17 Knebworth Avenue
Date
11 Jul 2017
Current
Potential
71
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
11 Jul 2017
71
82
Total Floor Area
136 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
3
Address
21 Knebworth Avenue
Date
28 Nov 2016
Current
Potential
61
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
28 Nov 2016
61
84
3 Jun 2011
58
66
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Knebworth Avenue
Date
29 Nov 2016
Current
Potential
66
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
29 Nov 2016
66
79
23 Oct 2013
63
81
Total Floor Area
116 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
3 Knebworth Avenue
Date
12 Nov 2013
Current
Potential
70
89
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
12 Nov 2013
70
89
Total Floor Area
88 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
31 Knebworth Avenue
Date
3 Oct 2022
Current
Potential
63
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
3 Oct 2022
63
88
4 Jan 2012
49
67
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
41 Knebworth Avenue
Date
25 Mar 2024
Current
Potential
58
86
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
25 Mar 2024
58
86
Total Floor Area
91 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
43 Knebworth Avenue
Date
26 Feb 2015
Current
Potential
69
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
26 Feb 2015
69
88
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
45 KNEBWORTH AVENUE
Date
16 Jul 2021
Current
Potential
65
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
16 Jul 2021
65
82
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
47 Knebworth Avenue
Date
6 Sep 2017
Current
Potential
65
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
6 Sep 2017
65
89
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
49 Knebworth Avenue
Date
21 Mar 2024
Current
Potential
68
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
21 Mar 2024
68
88
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
51 Knebworth Avenue
Date
11 Jul 2012
Current
Potential
43
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
11 Jul 2012
43
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
72
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
54 Kenbworth Avenue
Date
11 Sep 2023
Current
Potential
65
82
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
11 Sep 2023
65
82
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
1
Address
55 Knebworth Avenue
Date
10 Nov 2011
Current
Potential
53
63
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
10 Nov 2011
53
63
Total Floor Area
88 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
63 Knebworth Avenue
Date
20 May 2014
Current
Potential
51
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
20 May 2014
51
82
Total Floor Area
87 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
65 Knebworth Avenue
Date
31 Mar 2019
Current
Potential
64
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
31 Mar 2019
64
86
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
67 KNEBWORTH AVENUE, WALTHAMSTOW
Date
12 Oct 2020
Current
Potential
9
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
12 Oct 2020
9
87
Total Floor Area
87 sq m
Current CO2 Emissions Level
8.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
98
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
69 Knebworth Avenue
Date
11 Sep 2013
Current
Potential
67
80
Property Type
House
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
11 Sep 2013
67
80
7 Feb 2012
60
68
Total Floor Area
226 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
9 Knebworth Avenue
Date
26 Jun 2015
Current
Potential
68
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
26 Jun 2015
68
87
7 Dec 2010
69
71
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
First floor flat, 11 Knebworth avenue
Date
26 Jan 2021
Current
Potential
76
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
26 Jan 2021
76
78
Total Floor Area
74 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
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.