PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Gibbons Way, KNEBWORTH, SG3 6BX
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 Gibbons Way, SG3 6BX 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 Gibbons Way, KNEBWORTH, SG3 6BX
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 Gibbons Way
Date
30 Aug 2012
Current
Potential
68
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
30 Aug 2012
68
89
1 Jul 2010
73
76
23 Aug 2021
71
88
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
11 Gibbons Way
Date
6 Nov 2024
Current
Potential
62
78
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
6 Nov 2024
62
78
16 Jan 2015
52
70
Total Floor Area
44 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
61
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
12 Gibbons Way
Date
2 Sep 2012
Current
Potential
67
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
2 Sep 2012
67
88
23 Aug 2021
70
87
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
13 Gibbons Way
Date
12 Nov 2024
Current
Potential
66
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
12 Nov 2024
66
78
11 Mar 2015
71
74
Total Floor Area
51 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
50
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
15 Gibbons Way
Date
5 Nov 2024
Current
Potential
71
73
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
5 Nov 2024
71
73
15 Jan 2015
68
70
Total Floor Area
49 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
55
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
17 Gibbons Way
Date
16 Jul 2019
Current
Potential
66
66
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
16 Jul 2019
66
66
16 Dec 2009
64
65
Total Floor Area
42 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
74
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
19 Gibbons Way
Date
6 Nov 2024
Current
Potential
63
75
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
6 Nov 2024
63
75
14 Jan 2015
66
68
Total Floor Area
48 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
56
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
2 Gibbons Way
Date
30 Aug 2012
Current
Potential
66
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
30 Aug 2012
66
88
23 Aug 2021
70
88
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
21 Gibbons Way
Date
5 Nov 2024
Current
Potential
58
77
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
5 Nov 2024
58
77
19 Nov 2014
58
66
Total Floor Area
41 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
70
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
23 Gibbons Way
Date
30 Oct 2023
Current
Potential
73
89
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
30 Oct 2023
73
89
10 Sep 2012
70
85
19 Apr 2009
75
76
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
25 Gibbons Way, Knebworth
Date
12 Jul 2021
Current
Potential
70
90
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
12 Jul 2021
70
90
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.4
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
29 Gibbons Way
Date
23 Oct 2023
Current
Potential
72
89
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
23 Oct 2023
72
89
2 Sep 2012
66
88
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
3 Gibbons Way
Date
16 Jan 2015
Current
Potential
68
70
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
16 Jan 2015
68
70
Total Floor Area
44 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
57
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
31 GIBBONS WAY, KNEBWORTH
Date
4 Dec 2020
Current
Potential
74
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
4 Dec 2020
74
89
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
33 Gibbons Way
Date
2 Nov 2023
Current
Potential
71
89
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
Certificate History
2 Nov 2023
71
89
2 Sep 2012
67
88
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
37 Gibbons Way
Date
29 Jun 2012
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
29 Jun 2012
72
89
12 Jul 2021
72
90
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
39 Gibbons Way
Date
21 Dec 2012
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
21 Dec 2012
71
88
12 Jul 2021
70
88
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
4 Gibbons Way
Date
10 Jun 2014
Current
Potential
57
90
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
10 Jun 2014
57
90
Total Floor Area
61 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
41 Gibbons Way
Date
18 Mar 2015
Current
Potential
66
84
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
18 Mar 2015
66
84
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
43 Gibbons Way
Date
24 Oct 2023
Current
Potential
69
87
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
24 Oct 2023
69
87
2 Sep 2012
70
90
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
45 Gibbons Way
Date
3 Nov 2023
Current
Potential
72
87
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
3 Nov 2023
72
87
2 Sep 2012
72
88
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
47 Gibbons Way
Date
3 Nov 2023
Current
Potential
70
86
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
3 Nov 2023
70
86
2 Sep 2012
65
88
21 Jan 2011
72
75
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
49 Gibbons Way
Date
23 Oct 2023
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
23 Oct 2023
72
89
2 Sep 2012
70
87
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
5 Gibbons Way
Date
16 Jul 2019
Current
Potential
61
67
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
16 Jul 2019
61
67
12 Aug 2009
55
60
Total Floor Area
43 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
86
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
51 Gibbons Way
Date
30 Aug 2012
Current
Potential
70
87
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
30 Aug 2012
70
87
12 Jul 2021
71
88
Total Floor Area
66 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
6 Gibbons Way
Date
24 Oct 2023
Current
Potential
70
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
24 Oct 2023
70
88
27 Feb 2009
72
77
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
7 Gibbons Way
Date
19 Dec 2024
Current
Potential
62
67
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
19 Dec 2024
62
67
16 Jan 2015
65
70
Total Floor Area
42 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
76
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
8 Gibbons Way, Knebworth
Date
23 Aug 2021
Current
Potential
71
88
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
23 Aug 2021
71
88
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
9 Gibbons Way
Date
16 Jul 2019
Current
Potential
68
68
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
16 Jul 2019
68
68
22 Jun 2010
68
70
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
65
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.