PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Overstone Road, HARPENDEN, AL5 5PJ

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 Overstone Road, AL5 5PJ 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 Overstone Road, HARPENDEN, AL5 5PJ
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
14 Overstone Road
Date
17 Jan 2017
Current
Potential
56
79
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
17 Jan 2017
56
79
Total Floor Area
125 sq m
Current CO2 Emissions Level
6.6
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
16 Overstone Road
Date
15 Apr 2019
Current
Potential
62
75
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
15 Apr 2019
62
75
Total Floor Area
188 sq m
Current CO2 Emissions Level
8.1
Potential CO2 Emissions Level
5.3
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
18 Overstone Road
Date
7 Feb 2009
Current
Potential
43
62
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
7 Feb 2009
43
62
Total Floor Area
152 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
6.6
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
20 Overstone Road
Date
7 Dec 2018
Current
Potential
69
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
7 Dec 2018
69
80
22 Jan 2016
67
79
Total Floor Area
184 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
22 Overstone Road
Date
16 Oct 2014
Current
Potential
59
73
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
16 Oct 2014
59
73
Total Floor Area
169 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
4.8
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
24 Overstone Road
Date
9 Mar 2024
Current
Potential
69
82
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
9 Mar 2024
69
82
Total Floor Area
137 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
26 Overstone Road
Date
3 Feb 2016
Current
Potential
44
72
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
3 Feb 2016
44
72
Total Floor Area
115 sq m
Current CO2 Emissions Level
8.2
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
32 Overstone Road
Date
26 Apr 2011
Current
Potential
56
63
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
26 Apr 2011
56
63
Total Floor Area
79 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
38 Overstone Road
Date
4 Nov 2022
Current
Potential
57
79
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
4 Nov 2022
57
79
1 Jul 2015
53
76
Total Floor Area
79 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
4 Overstone Road
Date
21 Feb 2023
Current
Potential
66
81
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
21 Feb 2023
66
81
Total Floor Area
137 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
40 Overstone Road
Date
15 Jun 2023
Current
Potential
61
77
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
15 Jun 2023
61
77
29 Mar 2011
56
62
Total Floor Area
118 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
46 Overstone Road
Date
27 May 2015
Current
Potential
52
78
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
27 May 2015
52
78
Total Floor Area
118 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
48 Overstone Road
Date
17 Mar 2010
Current
Potential
31
45
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
17 Mar 2010
31
45
Total Floor Area
46 sq m
Current CO2 Emissions Level
6.9
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
108
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
58 Overstone Road
Date
24 Aug 2011
Current
Potential
58
65
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
24 Aug 2011
58
65
Total Floor Area
96 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
6 Overstone Road
Date
17 Jul 2011
Current
Potential
58
58
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
17 Jul 2011
58
58
Total Floor Area
96 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
4.6
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
60 Overstone Road
Date
4 Jan 2022
Current
Potential
67
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
4 Jan 2022
67
83
Total Floor Area
132 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
62 Overstone Road
Date
10 Nov 2015
Current
Potential
57
77
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
10 Nov 2015
57
77
Total Floor Area
121 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
66 Overstone Road
Date
17 Oct 2024
Current
Potential
62
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
17 Oct 2024
62
80
9 Oct 2014
68
81
4 Feb 2013
33
87
Total Floor Area
151 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
68 Overstone Road
Date
25 May 2013
Current
Potential
59
76
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
25 May 2013
59
76
Total Floor Area
95 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
72 Overstone Road
Date
31 Mar 2016
Current
Potential
50
77
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
31 Mar 2016
50
77
Total Floor Area
130 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
74 Overstone Road
Date
29 Nov 2021
Current
Potential
61
74
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
29 Nov 2021
61
74
Total Floor Area
180 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
4
Address
76 Overstone Road
Date
30 Mar 2009
Current
Potential
41
51
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
30 Mar 2009
41
51
Total Floor Area
100 sq m
Current CO2 Emissions Level
6.9
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
70
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
8 Overstone Road
Date
28 Jul 2011
Current
Potential
54
61
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Jul 2011
54
61
Total Floor Area
46 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
80 Overstone Road
Date
5 Aug 2010
Current
Potential
65
74
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
5 Aug 2010
65
74
Total Floor Area
152 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
82 Overstone Road
Date
11 Aug 2019
Current
Potential
66
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
11 Aug 2019
66
75
4 Aug 2009
63
74
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
84 Overstone Road
Date
24 Nov 2016
Current
Potential
68
75
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
24 Nov 2016
68
75
Total Floor Area
69 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
86 Overstone Road
Date
21 Jan 2015
Current
Potential
62
76
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
21 Jan 2015
62
76
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
88 Overstone Road
Date
12 Jun 2009
Current
Potential
63
74
Property Type
Maisonette
Built Form
Detached
Constructed
1950-1966
+
Certificate History
12 Jun 2009
63
74
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
52
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.