PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Longmead, KNEBWORTH, SG3 6JH
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 Longmead, SG3 6JH 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 Longmead, KNEBWORTH, SG3 6JH
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
13 Longmead, Woolmer Green
Date
4 Apr 2018
Current
Potential
69
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
4 Apr 2018
69
84
8 Jan 2010
37
43
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
14 Longmead, Woolmer Green
Date
17 Oct 2012
Current
Potential
73
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
17 Oct 2012
73
88
Total Floor Area
82 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
15 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
71
86
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
71
86
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
16 Longmead, Woolmer Green
Date
23 Nov 2024
Current
Potential
71
86
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
23 Nov 2024
71
86
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
17 Longmead, Woolmer Green
Date
26 May 2010
Current
Potential
71
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
26 May 2010
71
77
Total Floor Area
79 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
18 Longmead, Woolmer Green
Date
4 Mar 2024
Current
Potential
71
74
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
4 Mar 2024
71
74
10 Jul 2014
75
89
Total Floor Area
78 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
17
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
19 Longmead, Woolmer Green
Date
28 Nov 2015
Current
Potential
59
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
28 Nov 2015
59
85
Total Floor Area
79 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
2 Longmead, Woolmer Green
Date
18 Jun 2011
Current
Potential
74
74
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
18 Jun 2011
74
74
Total Floor Area
91 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
20 Longmead, Woolmer Green
Date
30 Sep 2021
Current
Potential
54
80
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
30 Sep 2021
54
80
Total Floor Area
79 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
22 Longmead, Woolmer Green
Date
15 May 2022
Current
Potential
77
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
15 May 2022
77
89
13 Nov 2014
57
88
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
23 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
76
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
76
89
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
24 Longmead, Woolmer Green
Date
30 May 2014
Current
Potential
75
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
30 May 2014
75
89
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
71
86
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
22 Nov 2024
71
86
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
28 Longmead, Woolmer Green
Date
28 Mar 2016
Current
Potential
70
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
28 Mar 2016
70
85
Total Floor Area
79 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
29 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
76
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
76
89
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
3 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
77
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
77
89
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
30 Longmead, Woolmer Green
Date
2 Sep 2019
Current
Potential
56
80
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
2 Sep 2019
56
80
Total Floor Area
86 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
31 Longmead, Woolmer Green
Date
20 Sep 2021
Current
Potential
66
82
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
20 Sep 2021
66
82
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
33 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
77
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
77
89
Total Floor Area
88 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
34 Longmead, Woolmer Green
Date
10 Sep 2014
Current
Potential
72
86
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
10 Sep 2014
72
86
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
4 Longmead, Woolmer Green
Date
22 Nov 2024
Current
Potential
72
85
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
22 Nov 2024
72
85
22 Apr 2011
72
73
Total Floor Area
88 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
5 Longmead, Woolmer Green
Date
16 Sep 2013
Current
Potential
52
86
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
16 Sep 2013
52
86
Total Floor Area
78 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
7 Longmead, Woolmer Green
Date
16 Oct 2018
Current
Potential
60
84
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
16 Oct 2018
60
84
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
9 Longmead, Woolmer Green
Date
26 May 2020
Current
Potential
72
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
26 May 2020
72
86
Total Floor Area
78 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
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.