PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Powis Square, LONDON, W11 2AZ
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 Powis Square, W11 2AZ 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 Powis Square, LONDON, W11 2AZ
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
23b Powis Square
Date
6 Mar 2014
Current
Potential
77
85
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
6 Mar 2014
77
85
Total Floor Area
73 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
23e Powis Square
Date
25 Feb 2014
Current
Potential
63
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
25 Feb 2014
63
82
Total Floor Area
102 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
23h Powis Square
Date
6 Jun 2014
Current
Potential
63
82
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
6 Jun 2014
63
82
Total Floor Area
72 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
23j Powis Square
Date
25 Feb 2014
Current
Potential
61
67
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
25 Feb 2014
61
67
Total Floor Area
42 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
24 Powis Square
Date
20 Aug 2013
Current
Potential
66
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
20 Aug 2013
66
80
Total Floor Area
141 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25b Powis Square
Date
29 Mar 2015
Current
Potential
65
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
29 Mar 2015
65
78
Total Floor Area
102 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
25d Powis Square
Date
6 Mar 2014
Current
Potential
67
81
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
6 Mar 2014
67
81
Total Floor Area
54 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
26a Powis Square
Date
11 Feb 2011
Current
Potential
74
75
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
11 Feb 2011
74
75
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
26c Powis Square
Date
24 Dec 2010
Current
Potential
70
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
24 Dec 2010
70
77
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
26d Powis Square
Date
13 Oct 2013
Current
Potential
71
78
Property Type
Maisonette
Built Form
End-Terrace
Constructed
before 1900
Certificate History
13 Oct 2013
71
78
Total Floor Area
160 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
Flat 1, 20 powis square,
Date
8 Jul 2021
Current
Potential
65
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Jul 2021
65
80
Total Floor Area
36 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 1, 27, Powis Square
Date
10 Nov 2015
Current
Potential
72
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2015
72
78
21 Oct 2010
70
73
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
Flat 12, 15, Powis Square
Date
12 Jan 2009
Current
Potential
45
56
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
Certificate History
12 Jan 2009
45
56
Total Floor Area
86 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
75
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 2, 20 powis square
Date
8 Jul 2021
Current
Potential
68
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Jul 2021
68
80
Total Floor Area
36 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 2, 27 Powis Square
Date
10 Nov 2015
Current
Potential
69
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2015
69
80
21 Oct 2009
80
82
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 3, 27 Powis Square
Date
10 Nov 2015
Current
Potential
71
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2015
71
80
11 May 2009
71
74
3 Nov 2008
68
69
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 4, 27 Powis Square
Date
10 Nov 2015
Current
Potential
79
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2015
79
82
10 Mar 2009
81
81
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat 5, 27 Powis Square
Date
10 Nov 2015
Current
Potential
66
69
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
10 Nov 2015
66
69
30 Jul 2009
69
72
Total Floor Area
91 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat A, 15, Powis Square
Date
30 Mar 2015
Current
Potential
64
78
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
30 Mar 2015
64
78
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat A, 17 Powis Square
Date
12 Jul 2022
Current
Potential
72
79
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
12 Jul 2022
72
79
Total Floor Area
81 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat A, 18, Powis Square
Date
13 Oct 2013
Current
Potential
70
80
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
13 Oct 2013
70
80
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
Flat B, 17 Powis Square
Date
5 Jul 2022
Current
Potential
74
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
5 Jul 2022
74
80
Total Floor Area
64 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat B, 18, Powis Square
Date
21 Feb 2014
Current
Potential
76
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
76
83
22 Apr 2012
64
79
Total Floor Area
73 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat B, 21-22, Powis Square
Date
21 Feb 2014
Current
Potential
67
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
67
82
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat C, 15, Powis Square
Date
21 Feb 2014
Current
Potential
53
78
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
53
78
Total Floor Area
33 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
83
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat C, 17 Powis Square
Date
26 Feb 2019
Current
Potential
71
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
26 Feb 2019
71
77
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat C, 18, Powis Square
Date
21 Feb 2014
Current
Potential
76
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
76
83
Total Floor Area
73 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat D, 18, Powis Square
Date
21 Feb 2014
Current
Potential
71
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
71
81
16 Nov 2012
65
81
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.3
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
Flat D, 19 Powis Square
Date
25 Apr 2018
Current
Potential
76
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
25 Apr 2018
76
81
25 Apr 2018
76
81
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat E, 17 Powis Square
Date
8 Dec 2015
Current
Potential
72
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
8 Dec 2015
72
81
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat E, 19 Powis Square
Date
11 Apr 2016
Current
Potential
62
75
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
11 Apr 2016
62
75
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat E, 21-22, Powis Square
Date
21 Feb 2014
Current
Potential
67
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
67
82
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat F, 15, Powis Square
Date
21 Feb 2014
Current
Potential
66
81
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
66
81
7 Jun 2012
63
80
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat F, 21-22, Powis Square
Date
21 Feb 2014
Current
Potential
53
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
53
82
21 Feb 2014
72
81
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat G, 15, Powis Square
Date
21 Feb 2014
Current
Potential
70
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
70
81
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat G, 21-22
Date
26 Sep 2024
Current
Potential
77
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
26 Sep 2024
77
83
14 Oct 2013
65
79
17 Oct 2012
63
81
Total Floor Area
77 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat H, 15, Powis Square
Date
21 Feb 2014
Current
Potential
66
81
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
66
81
13 Nov 2009
62
62
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat H, 21-22, Powis Square
Date
21 Feb 2014
Current
Potential
72
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
72
81
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat J, 15 Powis Square
Date
3 Sep 2024
Current
Potential
74
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
3 Sep 2024
74
81
Total Floor Area
66 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat K, 15, Powis Square
Date
21 Feb 2014
Current
Potential
46
66
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
46
66
Total Floor Area
56 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
76
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat L, 21-22 Powis Square
Date
25 Apr 2010
Current
Potential
72
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
25 Apr 2010
72
79
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat M, 15-16 Powis Square
Date
12 Jan 2009
Current
Potential
45
56
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
Certificate History
12 Jan 2009
45
56
Total Floor Area
86 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
75
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat M, 21-22, Powis Square
Date
21 Feb 2014
Current
Potential
39
68
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
21 Feb 2014
39
68
Total Floor Area
43 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
86
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat P, 21-22 Powis Square
Date
27 Nov 2008
Current
Potential
57
66
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
Certificate History
27 Nov 2008
57
66
Total Floor Area
42 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
78
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Garden flat, 20 powis square
Date
8 Jul 2021
Current
Potential
59
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Jul 2021
59
78
Total Floor Area
36 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
73
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Second Floor Flat, 20 Powis Square
Date
27 Aug 2020
Current
Potential
67
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
27 Aug 2020
67
82
Total Floor Area
45 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Third Floor Flat, 20 Powis Square
Date
27 Aug 2020
Current
Potential
51
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
27 Aug 2020
51
83
Total Floor Area
45 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
58
Mains Gas Available
No
Habitable Rooms
3
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.