PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
New Close, KNEBWORTH, SG3 6NU
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 New Close, SG3 6NU 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 New Close, KNEBWORTH, SG3 6NU
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 New Close
Date
22 Mar 2024
Current
Potential
65
84
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
Certificate History
22 Mar 2024
65
84
Total Floor Area
90 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
10 New Close
Date
13 Oct 2009
Current
Potential
71
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
13 Oct 2009
71
75
Total Floor Area
92 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
12 New Close
Date
3 Aug 2010
Current
Potential
65
74
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
3 Aug 2010
65
74
Total Floor Area
110 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
13 New Close
Date
1 Dec 2023
Current
Potential
76
85
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
1 Dec 2023
76
85
15 Dec 2014
54
83
10 Jun 2009
37
68
Total Floor Area
125 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
16 New Close
Date
15 May 2018
Current
Potential
68
77
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
15 May 2018
68
77
Total Floor Area
163 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
17 New Close
Date
6 Aug 2012
Current
Potential
64
84
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
6 Aug 2012
64
84
5 Mar 2012
61
70
Total Floor Area
120 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
2 New Close
Date
30 Jan 2019
Current
Potential
64
86
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
30 Jan 2019
64
86
27 Jun 2009
56
75
Total Floor Area
70 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
20 New Close
Date
23 May 2010
Current
Potential
56
68
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
23 May 2010
56
68
Total Floor Area
92 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
21 New Close
Date
25 Oct 2023
Current
Potential
70
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
25 Oct 2023
70
83
Total Floor Area
100 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
22 New Close
Date
21 Jul 2015
Current
Potential
60
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
21 Jul 2015
60
83
27 Apr 2013
50
84
Total Floor Area
119 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
23 New Close
Date
23 Sep 2024
Current
Potential
68
78
Property Type
House
Built Form
Detached
Constructed
1930-1949
Certificate History
23 Sep 2024
68
78
5 Jun 2018
64
78
Total Floor Area
162 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
26 New Close
Date
20 Apr 2017
Current
Potential
66
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
20 Apr 2017
66
83
Total Floor Area
128 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
27 New Close
Date
2 Oct 2019
Current
Potential
69
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
2 Oct 2019
69
82
6 May 2014
60
82
Total Floor Area
134 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
28 New Close
Date
21 Mar 2012
Current
Potential
72
76
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Mar 2012
72
76
Total Floor Area
129 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
29 New Close
Date
10 Jul 2024
Current
Potential
62
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
10 Jul 2024
62
79
Total Floor Area
115 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
3 New Close
Date
4 Sep 2017
Current
Potential
65
83
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
4 Sep 2017
65
83
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
30 New Close
Date
15 Jun 2013
Current
Potential
63
77
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
15 Jun 2013
63
77
Total Floor Area
122 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
31 New Close
Date
28 Oct 2008
Current
Potential
57
59
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
28 Oct 2008
57
59
Total Floor Area
96 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
5.7
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
32 New Close
Date
18 Aug 2019
Current
Potential
55
77
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
18 Aug 2019
55
77
Total Floor Area
113 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
35 New Close
Date
4 Feb 2016
Current
Potential
66
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
4 Feb 2016
66
82
29 Dec 2014
63
81
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
36 New Close
Date
21 Sep 2017
Current
Potential
63
81
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Sep 2017
63
81
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
39 New Close
Date
11 Jun 2023
Current
Potential
71
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 Jun 2023
71
82
12 Jun 2012
67
83
Total Floor Area
117 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
1
Address
42 New Close
Date
7 Oct 2012
Current
Potential
64
77
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
7 Oct 2012
64
77
Total Floor Area
161 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
43 New Close
Date
11 Dec 2012
Current
Potential
64
77
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 Dec 2012
64
77
4 Oct 2009
37
58
Total Floor Area
96 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
44 New Close
Date
11 Mar 2019
Current
Potential
56
68
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 Mar 2019
56
68
11 Dec 2012
50
81
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
48 New Close
Date
2 Apr 2018
Current
Potential
67
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
2 Apr 2018
67
80
23 Feb 2016
64
84
Total Floor Area
105 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
49 New Close
Date
20 Feb 2020
Current
Potential
72
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
20 Feb 2020
72
84
Total Floor Area
112 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
50 New Close
Date
10 Jun 2019
Current
Potential
51
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
10 Jun 2019
51
75
Total Floor Area
128 sq m
Current CO2 Emissions Level
7.8
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
51 New Close
Date
22 Feb 2014
Current
Potential
68
88
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
22 Feb 2014
68
88
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
52 New Close
Date
6 Dec 2010
Current
Potential
51
57
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
Certificate History
6 Dec 2010
51
57
Total Floor Area
73 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
6.6
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
6 New Close
Date
26 Feb 2020
Current
Potential
71
78
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
26 Feb 2020
71
78
19 Jun 2011
61
71
Total Floor Area
155 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
9 New Close
Date
18 Feb 2014
Current
Potential
64
79
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
18 Feb 2014
64
79
Total Floor Area
152 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
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.