PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Welwyn Hall Gardens, WELWYN, AL6 9LF
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 Welwyn Hall Gardens, AL6 9LF 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 Welwyn Hall Gardens, WELWYN, AL6 9LF
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Welwyn Hall Gardens
Date
15 Apr 2012
Current
Potential
67
80
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
15 Apr 2012
67
80
Total Floor Area
152 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
12 Welwyn Hall Gardens
Date
9 Sep 2013
Current
Potential
70
84
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
9 Sep 2013
70
84
Total Floor Area
127 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
13 Welwyn Hall Gardens
Date
28 Apr 2015
Current
Potential
67
82
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
28 Apr 2015
67
82
Total Floor Area
104 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
14 Welwyn Hall Gardens
Date
9 Sep 2019
Current
Potential
67
83
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
9 Sep 2019
67
83
Total Floor Area
94 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
18 Welwyn Hall Gardens
Date
26 Aug 2022
Current
Potential
73
86
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
26 Aug 2022
73
86
22 Jan 2014
71
85
Total Floor Area
123 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
19 Welwyn Hall Gardens
Date
5 Apr 2022
Current
Potential
72
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
5 Apr 2022
72
85
2 Sep 2020
69
85
20 Jan 2009
76
80
Total Floor Area
106 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
2 Welwyn Hall Gardens
Date
14 Feb 2023
Current
Potential
70
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
14 Feb 2023
70
81
26 Jul 2012
75
87
Total Floor Area
146 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
20 Welwyn Hall Gardens
Date
18 Jul 2018
Current
Potential
68
83
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
18 Jul 2018
68
83
Total Floor Area
105 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
21 Welwyn Hall Gardens
Date
13 Apr 2011
Current
Potential
70
75
Property Type
House
Built Form
Detached
Constructed
1996-2002
Certificate History
13 Apr 2011
70
75
Total Floor Area
95 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
24 Welwyn Hall Gardens
Date
12 Mar 2020
Current
Potential
71
85
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
12 Mar 2020
71
85
12 Nov 2009
71
76
Total Floor Area
93 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Welwyn Hall Gardens
Date
26 Jun 2013
Current
Potential
64
81
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
Certificate History
26 Jun 2013
64
81
Total Floor Area
99 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
26 Welwyn Hall Gardens
Date
16 Jan 2017
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
2003-2006
Certificate History
16 Jan 2017
71
86
Total Floor Area
114 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
27 Welwyn Hall Gardens
Date
16 Apr 2018
Current
Potential
68
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
16 Apr 2018
68
82
Total Floor Area
121 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
28 Welwyn Hall Gardens
Date
18 Jun 2024
Current
Potential
69
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
18 Jun 2024
69
80
12 May 2009
67
73
Total Floor Area
125 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
3 Welwyn Hall Gardens
Date
4 Apr 2011
Current
Potential
75
79
Property Type
House
Built Form
End-Terrace
Constructed
2003-2006
Certificate History
4 Apr 2011
75
79
Total Floor Area
120 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
34 WELWYN HALL GARDENS
Date
28 May 2021
Current
Potential
72
83
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
28 May 2021
72
83
Total Floor Area
114 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
34 Welwyn Hall Gardens
Date
10 Mar 2009
Current
Potential
70
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
10 Mar 2009
70
75
Total Floor Area
121 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
37 Welwyn Hall Gardens
Date
10 May 2015
Current
Potential
67
84
Property Type
House
Built Form
Semi-Detached
Constructed
1991-1995
Certificate History
10 May 2015
67
84
Total Floor Area
89 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
38 Welwyn Hall Gardens
Date
28 Dec 2023
Current
Potential
71
81
Property Type
House
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
28 Dec 2023
71
81
Total Floor Area
123 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
5 Welwyn Hall Gardens
Date
12 Apr 2023
Current
Potential
70
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
12 Apr 2023
70
82
4 May 2009
71
76
Total Floor Area
152 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
6 Welwyn Hall Gardens
Date
23 Feb 2023
Current
Potential
74
84
Property Type
House
Built Form
End-Terrace
Constructed
2003-2006
Certificate History
23 Feb 2023
74
84
14 Apr 2019
73
81
Total Floor Area
155 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
7 Welwyn Hall Gardens
Date
13 Sep 2012
Current
Potential
69
81
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
13 Sep 2012
69
81
20 Mar 2009
68
73
Total Floor Area
154 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
8 Welwyn Hall Gardens
Date
26 Jun 2018
Current
Potential
69
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
26 Jun 2018
69
80
Total Floor Area
150 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
9 Welwyn Hall Gardens
Date
12 Aug 2009
Current
Potential
63
73
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
12 Aug 2009
63
73
Total Floor Area
212 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
4.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
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.