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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Connaught Street, LONDON, W2 2AY

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 Connaught Street, W2 2AY 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 Connaught Street, LONDON, W2 2AY
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
15a Connaught Street
Date
19 Aug 2015
Current
Potential
54
68
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
19 Aug 2015
54
68
Total Floor Area
159 sq m
Current CO2 Emissions Level
8.4
Potential CO2 Emissions Level
5.7
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
17a Connaught Street
Date
1 Dec 2015
Current
Potential
61
68
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
1 Dec 2015
61
68
Total Floor Area
96 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
19a Connaught Street
Date
30 Jan 2023
Current
Potential
68
75
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
30 Jan 2023
68
75
19 Jan 2018
60
67
25 Nov 2015
46
61
Total Floor Area
94 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
21a Connaught Street
Date
18 Feb 2019
Current
Potential
62
73
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2019
62
73
10 Dec 2015
57
74
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
25 Connaught Street
Date
30 Jul 2018
Current
Potential
61
75
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
30 Jul 2018
61
75
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
25a Connaught Street
Date
20 Nov 2023
Current
Potential
73
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
20 Nov 2023
73
78
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
27a Connaught Street
Date
19 Feb 2019
Current
Potential
65
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
19 Feb 2019
65
78
25 Nov 2015
57
72
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
29a, Connaught Street
Date
3 Nov 2023
Current
Potential
64
77
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
3 Nov 2023
64
77
Total Floor Area
72 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
9a Connaught Street
Date
4 Jun 2018
Current
Potential
63
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
4 Jun 2018
63
78
23 Oct 2008
49
69
Total Floor Area
138 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
Basement Flat, 7 Connaught Street
Date
5 Mar 2020
Current
Potential
73
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
5 Mar 2020
73
79
25 Mar 2010
83
85
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat, 23, Connaught Street
Date
26 Jul 2020
Current
Potential
62
68
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
26 Jul 2020
62
68
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
Flat 1, 11A Connaught Street
Date
12 Sep 2019
Current
Potential
69
73
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
12 Sep 2019
69
73
26 Aug 2009
41
42
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 1b 11 Connought Street
Date
24 Jul 2023
Current
Potential
69
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
24 Jul 2023
69
83
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
1
Address
Flat 2, 11a Connaught Street
Date
15 Dec 2015
Current
Potential
72
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
15 Dec 2015
72
81
Total Floor Area
46 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3, 11a Connaught Street
Date
27 Nov 2023
Current
Potential
60
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
27 Nov 2023
60
79
23 Oct 2022
56
64
28 Aug 2012
49
68
15 Jul 2012
53
68
Total Floor Area
56 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Upper Maisonette, 23 Connaught Street
Date
16 Jan 2023
Current
Potential
57
70
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
16 Jan 2023
57
70
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
Upper Maisonette, 7 Connaught Street
Date
18 Feb 2019
Current
Potential
65
81
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2019
65
81
9 Mar 2009
59
64
Total Floor Area
181 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
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.