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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Downage, LONDON, NW4 1AS

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 Downage, NW4 1AS 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 Downage, LONDON, NW4 1AS
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Downage
Date
6 Mar 2019
Current
Potential
40
85
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
6 Mar 2019
40
85
Total Floor Area
158 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
15 Downage
Date
15 Mar 2012
Current
Potential
44
48
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
15 Mar 2012
44
48
27 Oct 2009
46
58
Total Floor Area
202 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
12.0
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
17 Downage
Date
17 Oct 2022
Current
Potential
81
84
Property Type
House
Built Form
Detached
Constructed
2007-2011
+
Certificate History
17 Oct 2022
81
84
30 Mar 2011
28
53
Total Floor Area
335 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
18
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
0
Address
19 Downage
Date
16 Mar 2009
Current
Potential
60
63
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
16 Mar 2009
60
63
Total Floor Area
231 sq m
Current CO2 Emissions Level
8.0
Potential CO2 Emissions Level
7.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
21 Downage
Date
23 Jul 2017
Current
Potential
59
81
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
23 Jul 2017
59
81
24 Oct 2010
40
56
Total Floor Area
198 sq m
Current CO2 Emissions Level
8.5
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
29 Downage
Date
10 Jan 2024
Current
Potential
75
81
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
10 Jan 2024
75
81
13 Jul 2011
80
81
20 Sep 2010
82
83
Total Floor Area
377 sq m
Current CO2 Emissions Level
8.9
Potential CO2 Emissions Level
7.0
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
11
Number of Extensions
2
Address
3 Downage
Date
25 Sep 2013
Current
Potential
57
60
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
25 Sep 2013
57
60
20 Nov 2012
57
60
18 Oct 2010
43
45
12 Nov 2008
31
59
Total Floor Area
327 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
12.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
33 Downage
Date
20 Feb 2009
Current
Potential
43
52
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
20 Feb 2009
43
52
Total Floor Area
229 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
11.0
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
0
Address
37 Downage
Date
29 Jan 2015
Current
Potential
59
82
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
29 Jan 2015
59
82
Total Floor Area
178 sq m
Current CO2 Emissions Level
7.9
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
0
Address
39 Downage
Date
19 Nov 2014
Current
Potential
40
68
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
19 Nov 2014
40
68
Total Floor Area
253 sq m
Current CO2 Emissions Level
16.0
Potential CO2 Emissions Level
8.1
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
43 Downage
Date
26 Apr 2012
Current
Potential
85
92
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
26 Apr 2012
85
92
Total Floor Area
239 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
17
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
45 Downage
Date
16 Apr 2013
Current
Potential
55
81
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
16 Apr 2013
55
81
Total Floor Area
312 sq m
Current CO2 Emissions Level
14.0
Potential CO2 Emissions Level
5.5
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
47 Downage
Date
4 Mar 2015
Current
Potential
65
79
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
4 Mar 2015
65
79
Total Floor Area
274 sq m
Current CO2 Emissions Level
9.5
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
4
Address
9 Downage
Date
18 Jul 2024
Current
Potential
62
81
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
18 Jul 2024
62
81
9 Aug 2011
47
53
Total Floor Area
288 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
5.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
9
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.