PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Watton Road, KNEBWORTH, SG3 6AH
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 Watton Road, SG3 6AH 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 Watton Road, KNEBWORTH, SG3 6AH
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Watton Road
Date
19 Jan 2022
Current
Potential
63
79
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
19 Jan 2022
63
79
Total Floor Area
232 sq m
Current CO2 Emissions Level
8.1
Potential CO2 Emissions Level
4.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
10 Watton Road
Date
27 Jun 2017
Current
Potential
46
72
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
27 Jun 2017
46
72
Total Floor Area
220 sq m
Current CO2 Emissions Level
14.0
Potential CO2 Emissions Level
7.2
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
4
Address
11 Watton Road
Date
21 Feb 2013
Current
Potential
54
80
Property Type
House
Built Form
Detached
Constructed
1930-1949
Certificate History
21 Feb 2013
54
80
Total Floor Area
125 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
12 Watton Road
Date
17 Feb 2016
Current
Potential
42
74
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
17 Feb 2016
42
74
Total Floor Area
177 sq m
Current CO2 Emissions Level
9.6
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
14 Watton Road
Date
5 Apr 2011
Current
Potential
47
51
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
5 Apr 2011
47
51
Total Floor Area
249 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
12.0
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
15 Watton Road
Date
9 May 2023
Current
Potential
56
82
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
Certificate History
9 May 2023
56
82
15 Nov 2012
74
86
Total Floor Area
99 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
16 Watton Road
Date
21 Feb 2014
Current
Potential
60
94
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
21 Feb 2014
60
94
Total Floor Area
203 sq m
Current CO2 Emissions Level
9.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
17 Watton Road
Date
23 Jul 2023
Current
Potential
79
84
Property Type
House
Built Form
Detached
Constructed
1930-1949
Certificate History
23 Jul 2023
79
84
27 May 2020
24
87
Total Floor Area
188 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
19 Watton Road
Date
10 Apr 2023
Current
Potential
72
81
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
10 Apr 2023
72
81
5 Mar 2011
61
70
Total Floor Area
244 sq m
Current CO2 Emissions Level
7.4
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
0
Address
2 Watton Road
Date
4 Jul 2024
Current
Potential
63
76
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
4 Jul 2024
63
76
16 Jul 2013
47
76
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
20 Watton Road
Date
11 Feb 2011
Current
Potential
58
66
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
11 Feb 2011
58
66
Total Floor Area
127 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
23 Watton Road
Date
13 Mar 2012
Current
Potential
69
70
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
Certificate History
13 Mar 2012
69
70
Total Floor Area
143 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
6.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
24 Watton Road
Date
10 Feb 2020
Current
Potential
58
82
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
10 Feb 2020
58
82
Total Floor Area
128 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
25 Watton Road
Date
12 Nov 2009
Current
Potential
65
71
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
Certificate History
12 Nov 2009
65
71
Total Floor Area
136 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
5.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
26a Watton Road
Date
14 Nov 2018
Current
Potential
57
71
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
14 Nov 2018
57
71
Total Floor Area
128 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
28 WATTON ROAD
Date
18 Jun 2021
Current
Potential
65
80
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
18 Jun 2021
65
80
Total Floor Area
192 sq m
Current CO2 Emissions Level
7.4
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
28 Watton Road
Date
15 Jul 2010
Current
Potential
38
52
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
15 Jul 2010
38
52
Total Floor Area
203 sq m
Current CO2 Emissions Level
15.0
Potential CO2 Emissions Level
11.0
CO2 per sq m per Year
72
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
29 Watton Road
Date
2 Mar 2016
Current
Potential
60
77
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
2 Mar 2016
60
77
Total Floor Area
192 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
30 Watton Road
Date
17 Jun 2015
Current
Potential
68
84
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
Certificate History
17 Jun 2015
68
84
27 Oct 2009
68
72
Total Floor Area
100 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
33 Watton Road
Date
9 Apr 2018
Current
Potential
46
78
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
9 Apr 2018
46
78
Total Floor Area
143 sq m
Current CO2 Emissions Level
9.2
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
39 Watton Road
Date
4 Jun 2024
Current
Potential
59
76
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
4 Jun 2024
59
76
Total Floor Area
164 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
41 Watton Road
Date
10 Apr 2015
Current
Potential
54
81
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
10 Apr 2015
54
81
Total Floor Area
118 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
4a Watton Road
Date
8 May 2014
Current
Potential
73
80
Property Type
House
Built Form
Detached
Constructed
1996-2002
Certificate History
8 May 2014
73
80
Total Floor Area
178 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
7 Watton Road
Date
22 Apr 2019
Current
Potential
65
78
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
22 Apr 2019
65
78
Total Floor Area
210 sq m
Current CO2 Emissions Level
7.9
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
9 WATTON ROAD, KNEBWORTH
Date
6 May 2021
Current
Potential
56
79
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
Certificate History
6 May 2021
56
79
Total Floor Area
135 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
9a Watton Road
Date
13 May 2021
Current
Potential
84
90
Property Type
House
Built Form
Detached
Constructed
2021
Certificate History
13 May 2021
84
90
Total Floor Area
203 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
15
Mains Gas Available
No
Habitable Rooms
0
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.