PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Sefton Avenue, HARROW, HA3 5JP
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, HA3 5JP 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, HARROW, HA3 5JP
Period Covered:
2008 - 31 October 2024
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
101 Sefton Avenue
Date
20 Jun 2013
Current
Potential
69
77
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
20 Jun 2013
69
77
1 Apr 2009
60
72
Total Floor Area
69 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
103 Sefton Avenue
Date
12 Sep 2016
Current
Potential
51
62
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
12 Sep 2016
51
62
Total Floor Area
71 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
105 Sefton Avenue
Date
2 May 2014
Current
Potential
76
77
Property Type
Flat
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
2 May 2014
76
77
Total Floor Area
69 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
107 Sefton Avenue
Date
13 Apr 2010
Current
Potential
70
72
Property Type
Flat
Built Form
N/A
Constructed
1930-1949
Certificate History
13 Apr 2010
70
72
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
113 Sefton Avenue
Date
10 May 2019
Current
Potential
63
64
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
10 May 2019
63
64
Total Floor Area
65 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
115 Sefton Avenue
Date
6 Feb 2014
Current
Potential
74
76
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
6 Feb 2014
74
76
Total Floor Area
64 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
117 SEFTON AVENUE, HARROW
Date
10 May 2021
Current
Potential
72
75
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
10 May 2021
72
75
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
123 Sefton Avenue
Date
30 Oct 2018
Current
Potential
74
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
30 Oct 2018
74
76
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
125 Sefton Avenue
Date
12 Oct 2021
Current
Potential
73
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
12 Oct 2021
73
75
Total Floor Area
55 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
127 Sefton Avenue
Date
5 Oct 2021
Current
Potential
70
77
Property Type
Flat
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
5 Oct 2021
70
77
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
129 Sefton Avenue
Date
3 Dec 2019
Current
Potential
69
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
3 Dec 2019
69
73
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
131 Sefton Avenue
Date
10 Jan 2015
Current
Potential
68
76
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
10 Jan 2015
68
76
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
133 Sefton Avenue
Date
21 Aug 2014
Current
Potential
76
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
21 Aug 2014
76
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
137 Sefton Avenue
Date
31 Oct 2008
Current
Potential
80
86
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
31 Oct 2008
80
86
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
139 Sefton Avenue
Date
10 Jan 2015
Current
Potential
74
77
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
10 Jan 2015
74
77
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
51 Sefton Avenue
Date
21 Mar 2018
Current
Potential
55
87
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
21 Mar 2018
55
87
Total Floor Area
66 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
53 Sefton Avenue
Date
3 Mar 2010
Current
Potential
58
64
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
3 Mar 2010
58
64
Total Floor Area
107 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
4.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
55 Sefton Avenue
Date
25 Apr 2012
Current
Potential
72
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
25 Apr 2012
72
86
Total Floor Area
94 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
57 Sefton Avenue
Date
24 Aug 2016
Current
Potential
58
84
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
24 Aug 2016
58
84
Total Floor Area
76 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
61 Sefton Avenue
Date
15 May 2023
Current
Potential
59
88
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
15 May 2023
59
88
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
67 Sefton Avenue
Date
24 Jul 2022
Current
Potential
63
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
24 Jul 2022
63
84
Total Floor Area
99 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
69 Sefton Avenue
Date
16 Jan 2024
Current
Potential
62
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
16 Jan 2024
62
80
Total Floor Area
91 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
71 SEFTON AVENUE
Date
2 Aug 2021
Current
Potential
45
82
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
2 Aug 2021
45
82
Total Floor Area
85 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
72
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
73 Sefton Avenue
Date
13 May 2019
Current
Potential
67
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
13 May 2019
67
86
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
75 Sefton Avenue
Date
9 Jun 2016
Current
Potential
64
83
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
9 Jun 2016
64
83
13 Sep 2010
52
60
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
77 Sefton Avenue
Date
20 Feb 2017
Current
Potential
48
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
20 Feb 2017
48
80
5 Jun 2012
52
78
9 Jan 2009
38
50
Total Floor Area
74 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
70
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
79 Sefton Avenue
Date
18 Aug 2017
Current
Potential
60
82
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
18 Aug 2017
60
82
Total Floor Area
150 sq m
Current CO2 Emissions Level
6.6
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
89 Sefton Avenue
Date
25 Nov 2021
Current
Potential
72
79
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
25 Nov 2021
72
79
22 Oct 2010
80
83
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
91 Sefton Avenue
Date
11 Oct 2022
Current
Potential
73
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
11 Oct 2022
73
75
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
93 Sefton Avenue
Date
1 Apr 2009
Current
Potential
67
71
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
1 Apr 2009
67
71
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
95 Sefton Avenue
Date
21 Sep 2009
Current
Potential
74
81
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Sep 2009
74
81
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
97 Sefton Avenue
Date
29 Jun 2017
Current
Potential
73
76
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
29 Jun 2017
73
76
6 May 2009
69
69
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
First Floor Flat, 127 Sefton Avenue
Date
21 Oct 2011
Current
Potential
44
63
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
21 Oct 2011
44
63
Total Floor Area
69 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
78
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.
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Contains Royal Mail data © Royal Mail copyright and Database right 2025.