Advanced

PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Westerham Avenue, LONDON, N9 9BS

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 Westerham Avenue, N9 9BS 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 Westerham Avenue, LONDON, N9 9BS
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
34 Westerham Avenue
Date
26 Sep 2017
Current
Potential
60
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
26 Sep 2017
60
86
18 Nov 2010
64
64
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
36 Westerham Avenue
Date
13 Aug 2019
Current
Potential
62
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
13 Aug 2019
62
80
Total Floor Area
146 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
38 Westerham Avenue
Date
20 Jan 2017
Current
Potential
3
69
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
20 Jan 2017
3
69
Total Floor Area
87 sq m
Current CO2 Emissions Level
9.3
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
108
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
40 Westerham Avenue
Date
21 Oct 2020
Current
Potential
39
79
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
21 Oct 2020
39
79
Total Floor Area
83 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
78
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
46 Westerham Avenue
Date
8 Nov 2017
Current
Potential
51
85
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
8 Nov 2017
51
85
Total Floor Area
95 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
54 Westerham Avenue
Date
25 Aug 2020
Current
Potential
65
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
25 Aug 2020
65
86
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
5
Number of Extensions
1
Address
56 Westerham Avenue
Date
16 Apr 2018
Current
Potential
60
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
16 Apr 2018
60
86
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
62 Westerham Avenue
Date
16 Apr 2014
Current
Potential
58
87
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
16 Apr 2014
58
87
15 Mar 2013
53
86
Total Floor Area
78 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
64 Westerham Avenue
Date
14 Mar 2022
Current
Potential
56
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
14 Mar 2022
56
80
22 Oct 2014
43
77
Total Floor Area
130 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
72 Westerham Avenue
Date
21 Jan 2022
Current
Potential
66
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
21 Jan 2022
66
86
Total Floor Area
95 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
78 Westerham Avenue
Date
17 Mar 2015
Current
Potential
63
85
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
17 Mar 2015
63
85
Total Floor Area
91 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
80 Westerham Avenue
Date
20 Oct 2019
Current
Potential
60
78
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
20 Oct 2019
60
78
Total Floor Area
120 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
82 Westerham Avenue
Date
7 Jun 2018
Current
Potential
56
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
7 Jun 2018
56
86
13 Aug 2012
32
76
Total Floor Area
95 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
84 Westerham Avenue
Date
9 Dec 2024
Current
Potential
75
89
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
9 Dec 2024
75
89
30 Jun 2020
52
78
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
88 Westerham Avenue
Date
3 Oct 2021
Current
Potential
57
84
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
3 Oct 2021
57
84
Total Floor Area
68 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
90 Westerham Avenue
Date
19 Dec 2015
Current
Potential
63
86
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
19 Dec 2015
63
86
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
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.