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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Herlwyn Avenue, RUISLIP, HA4 6HJ

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 Herlwyn Avenue, HA4 6HJ 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 Herlwyn Avenue, RUISLIP, HA4 6HJ
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
170 Herlwyn Avenue
Date
8 Jul 2013
Current
Potential
48
86
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
8 Jul 2013
48
86
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
172 Herlwyn Avenue
Date
9 Aug 2021
Current
Potential
62
86
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
9 Aug 2021
62
86
14 Apr 2011
60
65
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
178 HERLWYN AVENUE
Date
26 May 2021
Current
Potential
65
85
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
26 May 2021
65
85
Total Floor Area
69 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
180 Herlwyn Avenue
Date
14 Jun 2017
Current
Potential
71
83
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
14 Jun 2017
71
83
Total Floor Area
139 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
184 HERLWYN AVENUE, RUISLIP
Date
15 Mar 2021
Current
Potential
58
87
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
15 Mar 2021
58
87
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
188 Herlwyn Avenue
Date
15 Mar 2018
Current
Potential
72
83
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
15 Mar 2018
72
83
23 Feb 2015
28
84
Total Floor Area
120 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
190 Herlwyn Avenue
Date
9 Oct 2012
Current
Potential
58
85
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
9 Oct 2012
58
85
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
192 Herlwyn Avenue
Date
9 Jun 2022
Current
Potential
67
90
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
9 Jun 2022
67
90
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
202 Herlwyn Avenue
Date
21 Apr 2015
Current
Potential
71
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
21 Apr 2015
71
78
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
202a Herlwyn Avenue
Date
17 Jun 2019
Current
Potential
70
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
70
78
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
206 Herlwyn Avenue
Date
8 Apr 2015
Current
Potential
61
75
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
8 Apr 2015
61
75
Total Floor Area
49 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
208 Herlwyn Avenue
Date
24 Mar 2011
Current
Potential
55
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
24 Mar 2011
55
72
26 Oct 2010
52
71
Total Floor Area
46 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
78
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
208a Herlwyn Avenue
Date
18 Jun 2012
Current
Potential
58
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
18 Jun 2012
58
73
Total Floor Area
46 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
210 Herlwyn Avenue
Date
11 Jul 2011
Current
Potential
51
64
Property Type
Maisonette
Built Form
N/A
Constructed
1930-1949
+
Certificate History
11 Jul 2011
51
64
Total Floor Area
43 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
79
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
212 Herlwyn Avenue
Date
12 Jul 2015
Current
Potential
65
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
12 Jul 2015
65
77
2 Apr 2009
66
76
Total Floor Area
46 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
212a Herlwyn Avenue
Date
1 Aug 2024
Current
Potential
78
80
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
1 Aug 2024
78
80
30 Jan 2013
57
78
25 May 2010
55
82
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
214 Herlwyn Avenue
Date
26 Apr 2017
Current
Potential
71
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
26 Apr 2017
71
78
18 Jul 2010
69
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.8
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
216 Herlwyn Avenue
Date
22 May 2022
Current
Potential
69
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
22 May 2022
69
78
11 Feb 2011
58
70
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
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.
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