PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Longcroft Lane, WELWYN GARDEN CITY, AL8 6EL
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 Longcroft Lane, AL8 6EL 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 Longcroft Lane, WELWYN GARDEN CITY, AL8 6EL
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
101 Longcroft Lane
Date
8 Jul 2015
Current
Potential
74
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
Certificate History
8 Jul 2015
74
87
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
105 Longcroft Lane
Date
22 Sep 2014
Current
Potential
68
89
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
Certificate History
22 Sep 2014
68
89
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
107 Longcroft Lane
Date
18 Jan 2017
Current
Potential
68
85
Property Type
House
Built Form
Detached
Constructed
1996-2002
Certificate History
18 Jan 2017
68
85
Total Floor Area
92 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
109 Longcroft Lane
Date
11 Dec 2019
Current
Potential
54
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
11 Dec 2019
54
75
Total Floor Area
54 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
115 Longcroft Lane
Date
11 Dec 2019
Current
Potential
54
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
11 Dec 2019
54
73
28 Oct 2008
76
81
Total Floor Area
46 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
117 Longcroft Lane
Date
11 Dec 2019
Current
Potential
53
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
Certificate History
11 Dec 2019
53
73
Total Floor Area
44 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
119 Longcroft Lane
Date
17 Jul 2013
Current
Potential
64
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1991-1995
Certificate History
17 Jul 2013
64
75
Total Floor Area
44 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
123 Longcroft Lane
Date
6 Sep 2011
Current
Potential
75
76
Property Type
Flat
Built Form
N/A
Constructed
1983-1990
Certificate History
6 Sep 2011
75
76
Total Floor Area
44 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
131 Longcroft Lane
Date
11 Jan 2019
Current
Potential
71
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
11 Jan 2019
71
75
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
133 Longcroft Lane
Date
18 Jun 2012
Current
Potential
73
79
Property Type
Flat
Built Form
N/A
Constructed
2003-2006
Certificate History
18 Jun 2012
73
79
Total Floor Area
44 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
137 Longcroft Lane
Date
9 Jul 2009
Current
Potential
73
81
Property Type
Flat
Built Form
Semi-Detached
Constructed
1991-1995
Certificate History
9 Jul 2009
73
81
Total Floor Area
45 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
137 LONGCROFT LANE, WELWYN GARDEN CITY
Date
7 Dec 2020
Current
Potential
74
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
7 Dec 2020
74
74
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
141 Longcroft Lane
Date
28 May 2023
Current
Potential
78
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
2003-2006
Certificate History
28 May 2023
78
78
23 Nov 2011
68
72
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
143 Longcroft Lane
Date
10 Jan 2020
Current
Potential
70
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1976-1982
Certificate History
10 Jan 2020
70
75
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
147 Longcroft Lane
Date
19 Apr 2020
Current
Potential
77
78
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1996-2002
Certificate History
19 Apr 2020
77
78
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
149 Longcroft Lane
Date
22 Nov 2018
Current
Potential
72
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1991-1995
Certificate History
22 Nov 2018
72
73
Total Floor Area
46 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
71 Longcroft Lane
Date
16 May 2023
Current
Potential
69
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
Certificate History
16 May 2023
69
90
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
75 Longcroft Lane
Date
1 Aug 2017
Current
Potential
62
84
Property Type
House
Built Form
Detached
Constructed
1996-2002
Certificate History
1 Aug 2017
62
84
Total Floor Area
89 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
83 Longcroft Lane
Date
30 Apr 2018
Current
Potential
75
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
Certificate History
30 Apr 2018
75
86
30 Mar 2014
58
83
Total Floor Area
107 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
89 Longcroft Lane
Date
10 Oct 2021
Current
Potential
74
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
Certificate History
10 Oct 2021
74
87
27 Jun 2011
67
72
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
93 Longcroft Lane
Date
29 Aug 2019
Current
Potential
52
84
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
29 Aug 2019
52
84
Total Floor Area
80 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
95 Longcroft Lane
Date
4 May 2022
Current
Potential
60
81
Property Type
House
Built Form
Detached
Constructed
1991-1995
Certificate History
4 May 2022
60
81
24 Feb 2012
67
73
Total Floor Area
124 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
97 Longcroft Lane
Date
17 Jan 2012
Current
Potential
61
69
Property Type
House
Built Form
Detached
Constructed
1991-1995
Certificate History
17 Jan 2012
61
69
Total Floor Area
89 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
99 Longcroft Lane
Date
9 Mar 2023
Current
Potential
73
86
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
9 Mar 2023
73
86
31 Aug 2011
71
72
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
Flat 111 Longcroft Lane
Date
14 May 2023
Current
Potential
75
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
14 May 2023
75
77
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 113 Longcroft Lane
Date
30 May 2023
Current
Potential
78
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
30 May 2023
78
78
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 119 Longcroft Lane
Date
8 May 2023
Current
Potential
78
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
8 May 2023
78
78
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 121 Longcroft Lane
Date
8 May 2023
Current
Potential
78
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
8 May 2023
78
78
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 123 Longcroft Lane
Date
30 May 2023
Current
Potential
78
79
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
30 May 2023
78
79
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 125 Longcroft Lane
Date
8 May 2023
Current
Potential
76
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
8 May 2023
76
76
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 127 Longcroft Lane
Date
8 May 2023
Current
Potential
75
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
8 May 2023
75
75
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 129 Longcroft Lane
Date
30 May 2023
Current
Potential
78
79
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
30 May 2023
78
79
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 133 Longcroft Lane
Date
14 May 2023
Current
Potential
75
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
14 May 2023
75
75
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 135 Longcroft Lane
Date
14 May 2023
Current
Potential
75
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
14 May 2023
75
75
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 139 Longcroft Lane
Date
14 May 2023
Current
Potential
75
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
14 May 2023
75
75
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 141 Longcroft Lane
Date
17 May 2023
Current
Potential
74
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
17 May 2023
74
75
Total Floor Area
53 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 145 Longcroft Lane
Date
21 May 2023
Current
Potential
81
82
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
21 May 2023
81
82
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 151 Longcroft Lane
Date
21 May 2023
Current
Potential
74
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
21 May 2023
74
76
Total Floor Area
55 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 153 Longcroft Lane
Date
21 May 2023
Current
Potential
81
82
Property Type
Flat
Built Form
End-Terrace
Constructed
1996-2002
Certificate History
21 May 2023
81
82
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
19
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.