PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Harwood Close, WELWYN, AL6 0LF
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 Harwood Close, AL6 0LF 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 Harwood Close, WELWYN, AL6 0LF
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 Harwood Close, Tewin
Date
26 Jun 2019
Current
Potential
66
84
Property Type
House
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
26 Jun 2019
66
84
Total Floor Area
106 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
13 Harwood Close, Tewin
Date
25 Apr 2012
Current
Potential
61
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
25 Apr 2012
61
87
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
14 HARWOOD CLOSE, TEWIN
Date
29 Jan 2021
Current
Potential
73
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
29 Jan 2021
73
88
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
14 Harwood Close, Tewin
Date
2 Mar 2011
Current
Potential
66
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
2 Mar 2011
66
81
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
15 Harwood Close, Tewin
Date
14 Feb 2017
Current
Potential
62
83
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
14 Feb 2017
62
83
Total Floor Area
86 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
16 Harwood Close, Tewin
Date
20 Dec 2021
Current
Potential
70
95
Property Type
House
Built Form
Detached
Constructed
1950-1966
Certificate History
20 Dec 2021
70
95
3 Nov 2015
73
84
Total Floor Area
150 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
18 Harwood Close, Tewin
Date
14 Nov 2024
Current
Potential
87
99
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
14 Nov 2024
87
99
Total Floor Area
176 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
18
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
2 Harwood Close, Tewin
Date
10 May 2015
Current
Potential
69
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
10 May 2015
69
86
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
25 Harwood Close, Tewin
Date
2 Oct 2016
Current
Potential
56
84
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
2 Oct 2016
56
84
Total Floor Area
159 sq m
Current CO2 Emissions Level
8.0
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
27 Harwood Close, Tewin
Date
12 Jul 2023
Current
Potential
73
82
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
12 Jul 2023
73
82
Total Floor Area
196 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
28 Harwood Close, Tewin
Date
19 Apr 2015
Current
Potential
87
90
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
19 Apr 2015
87
90
23 Jul 2012
82
87
Total Floor Area
139 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
16
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
29 Harwood Close, Tewin
Date
6 Dec 2023
Current
Potential
65
97
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
6 Dec 2023
65
97
20 Sep 2015
70
83
Total Floor Area
123 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
32 Harwood Close, Tewin
Date
7 Jul 2013
Current
Potential
72
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
7 Jul 2013
72
87
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
33 Harwood Close, Tewin
Date
26 Sep 2010
Current
Potential
74
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
26 Sep 2010
74
79
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
4 Harwood Close, Tewin
Date
1 Dec 2009
Current
Potential
75
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
1 Dec 2009
75
80
Total Floor Area
138 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
5 Harwood Close, Tewin
Date
21 Mar 2022
Current
Potential
68
103
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
21 Mar 2022
68
103
10 Feb 2009
47
74
Total Floor Area
118 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
-0.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
6 Harwood Close, Tewin
Date
5 Aug 2021
Current
Potential
68
84
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
5 Aug 2021
68
84
Total Floor Area
125 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
7 Harwood Close, Tewin
Date
4 Apr 2022
Current
Potential
66
97
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
4 Apr 2022
66
97
4 Mar 2022
63
96
Total Floor Area
135 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
7 Harwood Close, Tewin
Date
3 Jun 2010
Current
Potential
53
70
Property Type
House
Built Form
Detached
Constructed
1967-1975
Certificate History
3 Jun 2010
53
70
Total Floor Area
127 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
8 Harwood Close, Tewin
Date
26 Apr 2023
Current
Potential
72
81
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
26 Apr 2023
72
81
28 Jun 2012
71
80
Total Floor Area
141 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
9 Harwood Close, Tewin
Date
21 Jul 2014
Current
Potential
65
83
Property Type
House
Built Form
Detached
Constructed
1976-1982
Certificate History
21 Jul 2014
65
83
15 Mar 2014
67
85
Total Floor Area
128 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
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.
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