PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
The Swallows, WELWYN GARDEN CITY, AL7 1BX
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 The Swallows, AL7 1BX 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 The Swallows, WELWYN GARDEN CITY, AL7 1BX
Period Covered:
2008 - 31 October 2024
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 The Swallows
Date
12 Nov 2009
Current
Potential
58
75
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
12 Nov 2009
58
75
Total Floor Area
51 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
70
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
11 The Swallows
Date
9 Jul 2010
Current
Potential
73
74
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
Certificate History
9 Jul 2010
73
74
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
13 The Swallows
Date
20 Feb 2013
Current
Potential
69
84
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
20 Feb 2013
69
84
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.4
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
15 The Swallows
Date
16 Sep 2012
Current
Potential
52
87
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
Certificate History
16 Sep 2012
52
87
Total Floor Area
64 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
19 The Swallows
Date
14 Mar 2020
Current
Potential
61
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
14 Mar 2020
61
82
18 Aug 2010
51
71
Total Floor Area
92 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
21 The Swallows
Date
21 Mar 2023
Current
Potential
68
83
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
21 Mar 2023
68
83
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
27 The Swallows
Date
19 Mar 2020
Current
Potential
68
88
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
Certificate History
19 Mar 2020
68
88
20 May 2009
69
71
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
33 The Swallows
Date
10 Feb 2014
Current
Potential
60
86
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
10 Feb 2014
60
86
31 Oct 2013
61
88
Total Floor Area
65 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
35 The Swallows
Date
27 Apr 2010
Current
Potential
62
76
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
Certificate History
27 Apr 2010
62
76
Total Floor Area
140 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
35 THE SWALLOWS, WELWYN GARDEN CITY
Date
21 Oct 2020
Current
Potential
69
83
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
Certificate History
21 Oct 2020
69
83
Total Floor Area
109 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
3
Address
37 The Swallows
Date
28 Jul 2009
Current
Potential
72
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
28 Jul 2009
72
78
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
39 The Swallows
Date
26 Sep 2016
Current
Potential
74
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
26 Sep 2016
74
76
Total Floor Area
56 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
45 The Swallows
Date
23 Jul 2012
Current
Potential
65
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1991-1995
Certificate History
23 Jul 2012
65
73
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
47 The Swallows
Date
24 Apr 2023
Current
Potential
71
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
24 Apr 2023
71
75
9 Feb 2012
65
72
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
49 The Swallows
Date
20 Feb 2019
Current
Potential
67
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
20 Feb 2019
67
76
6 Nov 2008
68
78
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5 The Swallows
Date
2 Mar 2010
Current
Potential
70
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
2 Mar 2010
70
78
Total Floor Area
51 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
51 The Swallows
Date
21 Oct 2015
Current
Potential
68
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
21 Oct 2015
68
75
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
53 The Swallows
Date
24 Apr 2023
Current
Potential
70
77
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
24 Apr 2023
70
77
30 Apr 2013
64
76
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
55 The Swallows
Date
9 Oct 2016
Current
Potential
73
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1983-1990
Certificate History
9 Oct 2016
73
76
27 Jan 2012
67
68
Total Floor Area
56 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
57 The Swallows
Date
9 Oct 2019
Current
Potential
74
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
9 Oct 2019
74
76
17 Jun 2009
62
81
Total Floor Area
58 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
59 The Swallows
Date
19 Oct 2021
Current
Potential
75
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1983-1990
Certificate History
19 Oct 2021
75
76
Total Floor Area
61 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
61 The Swallows
Date
27 Jan 2023
Current
Potential
72
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1983-1990
Certificate History
27 Jan 2023
72
75
1 Feb 2011
69
79
6 Jul 2009
73
80
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
63 The Swallows
Date
1 Nov 2019
Current
Potential
69
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
1 Nov 2019
69
76
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
65 The Swallows
Date
12 Oct 2023
Current
Potential
74
74
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1983-1990
Certificate History
12 Oct 2023
74
74
5 Dec 2013
74
74
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
7 The Swallows
Date
18 Feb 2009
Current
Potential
59
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
Certificate History
18 Feb 2009
59
75
Total Floor Area
51 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
71 The Swallows
Date
2 Jul 2010
Current
Potential
67
78
Property Type
Flat
Built Form
Detached
Constructed
1967-1975
Certificate History
2 Jul 2010
67
78
Total Floor Area
38 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
1
Address
73 The Swallows
Date
9 Oct 2024
Current
Potential
77
79
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
9 Oct 2024
77
79
6 Feb 2015
69
79
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
29
Mains Gas Available
Yes
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.