PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Boundary Lane, WELWYN GARDEN CITY, AL7 4EG
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 Boundary Lane, AL7 4EG 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 Boundary Lane, WELWYN GARDEN CITY, AL7 4EG
Period Covered:
2008 - 31 October 2024
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
101 Boundary Lane
Date
5 Dec 2018
Current
Potential
69
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
5 Dec 2018
69
83
Total Floor Area
91 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
103 Boundary Lane
Date
8 Sep 2014
Current
Potential
61
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
8 Sep 2014
61
87
12 May 2013
57
78
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
105 BOUNDARY LANE
Date
1 Jun 2021
Current
Potential
74
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
1 Jun 2021
74
84
Total Floor Area
105 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
105 Boundary Lane
Date
26 Jul 2010
Current
Potential
61
71
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
26 Jul 2010
61
71
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
107 BOUNDARY LANE
Date
21 Sep 2020
Current
Potential
70
80
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
21 Sep 2020
70
80
Total Floor Area
125 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
109 Boundary Lane
Date
14 May 2015
Current
Potential
53
81
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
14 May 2015
53
81
Total Floor Area
133 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
111 Boundary Lane
Date
19 Sep 2016
Current
Potential
63
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
19 Sep 2016
63
87
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
113 Boundary Lane
Date
8 Nov 2016
Current
Potential
62
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
8 Nov 2016
62
90
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
115 Boundary Lane
Date
11 Jan 2010
Current
Potential
76
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
11 Jan 2010
76
79
Total Floor Area
82 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
119 Boundary Lane
Date
12 Dec 2023
Current
Potential
71
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
12 Dec 2023
71
84
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
21 Boundary Lane
Date
4 Apr 2014
Current
Potential
69
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
4 Apr 2014
69
86
Total Floor Area
90 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Boundary Lane
Date
2 Oct 2013
Current
Potential
71
89
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
2 Oct 2013
71
89
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
27 Boundary Lane
Date
24 Apr 2018
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
24 Apr 2018
71
86
Total Floor Area
73 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
29 Boundary Lane
Date
18 Sep 2014
Current
Potential
73
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
18 Sep 2014
73
91
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
31 Boundary Lane
Date
7 Jan 2015
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
7 Jan 2015
71
86
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
33 Boundary Lane
Date
26 Sep 2016
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
26 Sep 2016
71
86
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
37 Boundary Lane
Date
29 Jul 2019
Current
Potential
65
84
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
29 Jul 2019
65
84
30 Apr 2019
67
87
Total Floor Area
70 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
43 Boundary Lane
Date
10 Jun 2020
Current
Potential
64
80
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
10 Jun 2020
64
80
27 Mar 2012
62
67
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
45 Boundary Lane
Date
21 Jun 2023
Current
Potential
56
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Jun 2023
56
79
28 Feb 2011
51
77
Total Floor Area
73 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
51 Boundary Lane
Date
16 Aug 2020
Current
Potential
69
83
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
Certificate History
16 Aug 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
1
Address
53 Boundary Lane
Date
7 Oct 2019
Current
Potential
71
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Oct 2019
71
84
22 Oct 2008
64
70
Total Floor Area
104 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
57 Boundary Lane
Date
13 Jul 2016
Current
Potential
68
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
13 Jul 2016
68
86
Total Floor Area
93 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
59 Boundary Lane
Date
25 Jan 2020
Current
Potential
70
86
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
25 Jan 2020
70
86
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.7
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
61 Boundary Lane
Date
22 Dec 2021
Current
Potential
72
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
22 Dec 2021
72
85
2 May 2011
60
71
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
63 Boundary Lane
Date
11 Sep 2017
Current
Potential
67
84
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
11 Sep 2017
67
84
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
67 Boundary Lane
Date
8 Nov 2022
Current
Potential
71
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
8 Nov 2022
71
84
29 Jan 2012
63
69
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
69 Boundary Lane
Date
29 Sep 2013
Current
Potential
61
76
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
29 Sep 2013
61
76
Total Floor Area
133 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
3
Address
75 Boundary Lane
Date
16 Mar 2010
Current
Potential
54
70
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
16 Mar 2010
54
70
Total Floor Area
97 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
77 Boundary Lane
Date
9 Feb 2022
Current
Potential
52
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
9 Feb 2022
52
86
16 Mar 2010
51
76
Total Floor Area
86 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
79 Boundary Lane
Date
19 Oct 2016
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
19 Oct 2016
71
86
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
81 Boundary Lane
Date
31 Oct 2024
Current
Potential
72
87
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
31 Oct 2024
72
87
Total Floor Area
90 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
89 Boundary Lane
Date
13 Apr 2011
Current
Potential
54
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
13 Apr 2011
54
75
Total Floor Area
82 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
91 Boundary Lane
Date
13 Mar 2017
Current
Potential
71
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
13 Mar 2017
71
88
9 Sep 2016
71
88
Total Floor Area
81 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
97 Boundary Lane
Date
2 Aug 2024
Current
Potential
72
86
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
2 Aug 2024
72
86
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
99 Boundary Lane
Date
7 Mar 2024
Current
Potential
71
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
7 Mar 2024
71
85
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
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.