PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Long John, HEMEL HEMPSTEAD, HP3 9ND
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 9ND 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 9ND
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
25 GILBERT BURNET HOUSE, LONG JOHN
Date
20 Jan 2021
Current
Potential
72
75
Property Type
Flat
Built Form
Detached
Constructed
1967-1975
Certificate History
20 Jan 2021
72
75
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
44
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 1 Gilbert Burnet House, Long John
Date
14 Nov 2011
Current
Potential
70
71
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
14 Nov 2011
70
71
4 May 2011
70
71
Total Floor Area
78 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
37
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
Flat 10, Gilbert Burnet House
Date
29 Nov 2022
Current
Potential
81
82
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
29 Nov 2022
81
82
Total Floor Area
42 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
22
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 10 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
81
81
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
81
81
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
21
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 11 Gilbert Burnet House, Long John
Date
6 Jun 2019
Current
Potential
79
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
6 Jun 2019
79
82
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
26
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 12, Gilbert Burnet House
Date
2 May 2023
Current
Potential
80
80
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
2 May 2023
80
80
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
25
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 12 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
81
81
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
81
81
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
20
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 13 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
82
82
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
82
82
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
20
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 14 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
83
83
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
83
83
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.8
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
18
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 15 Gilbert Burnet House, Long John
Date
15 Jun 2009
Current
Potential
73
73
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Jun 2009
73
73
Total Floor Area
40 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 17, Gilbert Burnet House
Date
4 Sep 2024
Current
Potential
61
62
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
4 Sep 2024
61
62
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 18 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
76
79
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
76
79
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
32
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 19, Gilbert Burnet House
Date
29 Jan 2025
Current
Potential
78
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
29 Jan 2025
78
79
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
28
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 19 Gilbert Burnet House, Long John
Date
2 Aug 2016
Current
Potential
76
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
2 Aug 2016
76
79
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
33
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 2, Gilbert Burnet House
Date
23 May 2024
Current
Potential
78
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
23 May 2024
78
78
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
30
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 2 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
80
80
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
80
80
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.0
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 20 Gilbert Burnet House, Long John
Date
9 May 2010
Current
Potential
76
82
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
9 May 2010
76
82
Total Floor Area
38 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 21 Gilbert Burnet House, Long John
Date
8 Feb 2014
Current
Potential
79
79
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
1976-1982
Certificate History
8 Feb 2014
79
79
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 22, Gilbert Burnet House
Date
19 Jul 2024
Current
Potential
62
64
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
19 Jul 2024
62
64
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 23, Gilbert Burnet House
Date
13 Jul 2022
Current
Potential
73
75
Property Type
Flat
Built Form
Detached
Constructed
1967-1975
Certificate History
13 Jul 2022
73
75
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
41
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 24 Gilbert Burnet House, Long John
Date
15 Jun 2009
Current
Potential
76
76
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Jun 2009
76
76
6 Nov 2008
84
85
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 25 Gilbert Burnet House, Long John
Date
15 Jun 2009
Current
Potential
76
76
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Jun 2009
76
76
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 26, Gilbert Burnet House
Date
22 Mar 2022
Current
Potential
77
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
22 Mar 2022
77
78
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
31
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 26 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
78
78
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
78
78
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
27
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 27 Gilbert Burnet House, Long John
Date
4 Oct 2009
Current
Potential
84
85
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
1976-1982
Certificate History
4 Oct 2009
84
85
4 Oct 2009
83
84
18 Nov 2008
79
85
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 28 Gilbert Burnet House, Long John
Date
16 Nov 2011
Current
Potential
80
80
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
16 Nov 2011
80
80
12 May 2009
80
85
Total Floor Area
42 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
22
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3, Gilbert Burnet House
Date
28 Jul 2023
Current
Potential
78
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
28 Jul 2023
78
78
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
29
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3 Gilbert Burnet House, Long John
Date
14 Nov 2011
Current
Potential
78
78
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
14 Nov 2011
78
78
22 Jun 2010
82
83
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
27
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 4 Gilbert Burnet House, Long John
Date
6 Jun 2019
Current
Potential
72
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
6 Jun 2019
72
76
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
41
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 5 Gilbert Burnet House, Long John
Date
15 Jun 2009
Current
Potential
83
83
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Jun 2009
83
83
29 Mar 2009
84
85
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 6, Gilbert Burnet House
Date
18 Oct 2024
Current
Potential
75
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
18 Oct 2024
75
78
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
36
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 6 Gilbert Burnet House, Long John
Date
14 Nov 2011
Current
Potential
78
78
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
14 Nov 2011
78
78
23 Apr 2010
82
84
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
28
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 7 Gilbert Burnet House, Long John
Date
14 Nov 2011
Current
Potential
73
73
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
14 Nov 2011
73
73
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
39
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 8 Gilbert Burnet House, Long John
Date
16 Nov 2011
Current
Potential
80
80
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
16 Nov 2011
80
80
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.0
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
23
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 9 Gilbert Burnet House, Long John
Date
15 Nov 2011
Current
Potential
82
82
Property Type
Flat
Built Form
Detached
Constructed
1976-1982
Certificate History
15 Nov 2011
82
82
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
20
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Bands
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.