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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Long John, HEMEL HEMPSTEAD, HP3 9LT

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 Long John, HP3 9LT 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 Long John, HEMEL HEMPSTEAD, HP3 9LT
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Long John
Date
21 Oct 2014
Current
Potential
62
86
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
21 Oct 2014
62
86
Total Floor Area
112 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
11 Long John
Date
14 Jul 2020
Current
Potential
63
83
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
14 Jul 2020
63
83
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
13 Long John
Date
16 Jun 2010
Current
Potential
68
76
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
16 Jun 2010
68
76
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
14 Long John
Date
1 May 2014
Current
Potential
58
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
1 May 2014
58
88
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
15 Long John
Date
28 Feb 2020
Current
Potential
64
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
28 Feb 2020
64
84
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
16 Long John
Date
17 Aug 2021
Current
Potential
74
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
17 Aug 2021
74
85
Total Floor Area
122 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
17 Long John
Date
16 May 2022
Current
Potential
69
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
16 May 2022
69
88
Total Floor Area
94 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
18 Long John
Date
2 Sep 2014
Current
Potential
75
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
2 Sep 2014
75
89
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
19 Long John
Date
24 Nov 2017
Current
Potential
68
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
24 Nov 2017
68
85
Total Floor Area
92 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
20 Long John
Date
11 Jul 2024
Current
Potential
74
85
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
11 Jul 2024
74
85
7 Dec 2011
65
74
Total Floor Area
98 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
21 Long John
Date
7 Dec 2013
Current
Potential
50
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
7 Dec 2013
50
83
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
22 LONG JOHN, HEMEL HEMPSTEAD
Date
4 Nov 2020
Current
Potential
70
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
4 Nov 2020
70
85
Total Floor Area
114 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
3 Long John
Date
6 Dec 2011
Current
Potential
69
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
6 Dec 2011
69
75
Total Floor Area
115 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
3 LONG JOHN, HEMEL HEMPSTEAD
Date
17 Feb 2021
Current
Potential
76
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
17 Feb 2021
76
87
Total Floor Area
111 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
4 Long John
Date
25 Feb 2020
Current
Potential
69
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
25 Feb 2020
69
79
Total Floor Area
116 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
5 Long John
Date
11 Jul 2024
Current
Potential
72
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
11 Jul 2024
72
83
Total Floor Area
109 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
6 Long John
Date
23 Feb 2023
Current
Potential
76
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
23 Feb 2023
76
86
Total Floor Area
106 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
7 Long John
Date
17 Jul 2024
Current
Potential
70
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
17 Jul 2024
70
82
10 Nov 2012
75
87
Total Floor Area
139 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
8 LONG JOHN, HEMEL HEMPSTEAD
Date
19 Apr 2021
Current
Potential
72
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
19 Apr 2021
72
86
Total Floor Area
111 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
9 Long John
Date
2 Sep 2018
Current
Potential
81
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
2 Sep 2018
81
89
24 Jun 2013
34
84
Total Floor Area
122 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
20
Mains Gas Available
Yes
Habitable Rooms
8
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.

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