PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Lower Square, ISLEWORTH, TW7 6RL

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 Lower Square, TW7 6RL 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 Lower Square, ISLEWORTH, TW7 6RL
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
Apartment 1, Northumberland House
Date
4 May 2023
Current
Potential
69
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
4 May 2023
69
77
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 1 Northumberland House, Lower Square
Date
15 May 2018
Current
Potential
69
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
15 May 2018
69
80
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 11, Northumberland House
Date
15 Sep 2021
Current
Potential
69
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
15 Sep 2021
69
72
Total Floor Area
48 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 11 Northumberland House, Lower Square
Date
19 Jan 2009
Current
Potential
65
69
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
19 Jan 2009
65
69
Total Floor Area
49 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
APARTMENT 13, NORTHUMBERLAND HOUSE
Date
10 Jun 2021
Current
Potential
70
70
Property Type
Flat
Built Form
Semi-Detached
Constructed
1996-2002
+
Certificate History
10 Jun 2021
70
70
Total Floor Area
44 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 13 Northumberland House, Lower Square
Date
3 Feb 2011
Current
Potential
82
83
Property Type
Flat
Built Form
Semi-Detached
Constructed
2003-2006
+
Certificate History
3 Feb 2011
82
83
Total Floor Area
44 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 14 Northumberland House, Lower Square
Date
24 Oct 2017
Current
Potential
69
71
Property Type
Flat
Built Form
Detached
Constructed
1996-2002
+
Certificate History
24 Oct 2017
69
71
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 2, Northumberland House
Date
27 Apr 2024
Current
Potential
76
79
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
2007-2011
+
Certificate History
27 Apr 2024
76
79
27 Apr 2024
76
80
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 2 Northumberland House, Lower Square
Date
20 Jun 2012
Current
Potential
74
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
20 Jun 2012
74
81
Total Floor Area
65 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 3 Northumberland House, Lower Square
Date
14 May 2019
Current
Potential
74
80
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1900-1929
+
Certificate History
14 May 2019
74
80
Total Floor Area
49 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 4, Northumberland House
Date
17 Aug 2021
Current
Potential
71
79
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
17 Aug 2021
71
79
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 4 Northumberland House, Lower Square
Date
21 Oct 2008
Current
Potential
61
62
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
21 Oct 2008
61
62
Total Floor Area
47 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 7 Northumberland House, Lower Square
Date
12 Sep 2017
Current
Potential
78
81
Property Type
Flat
Built Form
Semi-Detached
Constructed
2007 onwards
+
Certificate History
12 Sep 2017
78
81
Total Floor Area
56 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Apartment 8, Northumberland House
Date
14 Jun 2022
Current
Potential
75
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
14 Jun 2022
75
80
Total Floor Area
49 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Apartment 8 Northumberland House, Lower Square
Date
15 Jan 2009
Current
Potential
77
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
15 Jan 2009
77
78
Total Floor Area
49 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 1 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
76
76
Property Type
Flat
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
76
76
Total Floor Area
93 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 2 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
76
76
Property Type
Flat
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
76
76
Total Floor Area
93 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 3 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
77
77
Property Type
Maisonette
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
77
77
Total Floor Area
70 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 4 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
78
78
Property Type
Maisonette
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
78
78
Total Floor Area
68 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
21
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 5 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
78
78
Property Type
Maisonette
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
78
78
Total Floor Area
70 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
21
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 6 The Old Blue School Apartments, Lower Square
Date
19 Sep 2017
Current
Potential
77
77
Property Type
Maisonette
Built Form
Detached
Constructed
N/A
+
Certificate History
19 Sep 2017
77
77
Total Floor Area
70 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
0
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.