PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Sefton Avenue, LONDON, NW7 3QB

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 Sefton Avenue, NW7 3QB 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 Sefton Avenue, LONDON, NW7 3QB
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
15 Sefton Avenue
Date
14 Jun 2013
Current
Potential
55
87
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
14 Jun 2013
55
87
9 Oct 2012
50
68
Total Floor Area
109 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
21, Sefton Avenue
Date
16 Oct 2022
Current
Potential
74
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
16 Oct 2022
74
84
Total Floor Area
194 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
21 Sefton Avenue
Date
16 Oct 2022
Current
Potential
74
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
16 Oct 2022
74
83
Total Floor Area
194 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
23 Sefton Avenue
Date
6 Jan 2014
Current
Potential
46
67
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
6 Jan 2014
46
67
Total Floor Area
129 sq m
Current CO2 Emissions Level
7.8
Potential CO2 Emissions Level
4.7
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Sefton Avenue
Date
19 Jun 2024
Current
Potential
68
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
19 Jun 2024
68
83
Total Floor Area
149 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
29 Sefton Avenue
Date
6 Jul 2017
Current
Potential
66
84
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
6 Jul 2017
66
84
Total Floor Area
136 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
31 Sefton Avenue
Date
25 Jun 2018
Current
Potential
63
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
25 Jun 2018
63
83
Total Floor Area
135 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
5 Sefton Avenue
Date
2 Mar 2010
Current
Potential
71
77
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
+
Certificate History
2 Mar 2010
71
77
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5 SEFTON AVENUE, MILL HILL
Date
7 Apr 2021
Current
Potential
72
85
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
+
Certificate History
7 Apr 2021
72
85
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5a Sefton Avenue
Date
14 Jan 2022
Current
Potential
70
84
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
+
Certificate History
14 Jan 2022
70
84
2 Jun 2011
67
73
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
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.