PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Kilworth Close, WELWYN GARDEN CITY, AL7 3HR

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 Kilworth Close, AL7 3HR 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 Kilworth Close, WELWYN GARDEN CITY, AL7 3HR
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Kilworth Close
Date
12 Jul 2024
Current
Potential
66
83
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
12 Jul 2024
66
83
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
10 Kilworth Close
Date
21 Jun 2023
Current
Potential
75
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
21 Jun 2023
75
89
Total Floor Area
75 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
12 Kilworth Close
Date
11 Nov 2019
Current
Potential
70
88
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
11 Nov 2019
70
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
14 KILWORTH CLOSE
Date
19 May 2021
Current
Potential
71
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
19 May 2021
71
87
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
15 Kilworth Close
Date
1 Jul 2019
Current
Potential
72
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
1 Jul 2019
72
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
16 Kilworth Close
Date
4 Aug 2013
Current
Potential
65
88
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
4 Aug 2013
65
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
17 Kilworth Close
Date
10 Feb 2017
Current
Potential
71
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
10 Feb 2017
71
87
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
24 Kilworth Close
Date
25 Apr 2010
Current
Potential
78
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
25 Apr 2010
78
80
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
27 KILWORTH CLOSE, WELWYN GARDEN CITY
Date
5 Oct 2020
Current
Potential
71
85
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1991-1995
+
Certificate History
5 Oct 2020
71
85
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
28 Kilworth Close
Date
6 Jun 2010
Current
Potential
63
76
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
6 Jun 2010
63
76
20 Jan 2010
59
72
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
29 Kilworth Close
Date
22 Apr 2022
Current
Potential
56
76
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
22 Apr 2022
56
76
Total Floor Area
52 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
33 Kilworth Close
Date
11 Oct 2011
Current
Potential
58
70
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
11 Oct 2011
58
70
Total Floor Area
55 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
35 Kilworth Close
Date
23 Nov 2021
Current
Potential
72
91
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1983-1990
+
Certificate History
23 Nov 2021
72
91
Total Floor Area
54 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
36 Kilworth Close
Date
6 Sep 2022
Current
Potential
71
87
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1991-1995
+
Certificate History
6 Sep 2022
71
87
17 Apr 2012
67
91
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
37 Kilworth Close
Date
8 May 2016
Current
Potential
66
86
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
8 May 2016
66
86
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
38 Kilworth Close
Date
14 Feb 2019
Current
Potential
67
88
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
14 Feb 2019
67
88
Total Floor Area
54 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
39 Kilworth Close
Date
9 Jul 2009
Current
Potential
72
78
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
9 Jul 2009
72
78
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.3
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
40 Kilworth Close
Date
2 Jun 2017
Current
Potential
68
88
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
2 Jun 2017
68
88
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
41 Kilworth Close
Date
8 May 2016
Current
Potential
66
86
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
8 May 2016
66
86
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
44 Kilworth Close
Date
11 Mar 2024
Current
Potential
70
87
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
11 Mar 2024
70
87
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
6 Kilworth Close
Date
23 Sep 2013
Current
Potential
61
89
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
23 Sep 2013
61
89
23 Sep 2013
61
89
Total Floor Area
64 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
7 Kilworth Close
Date
26 Feb 2009
Current
Potential
73
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
26 Feb 2009
73
79
Total Floor Area
73 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
8 Kilworth Close
Date
18 Aug 2010
Current
Potential
72
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
18 Aug 2010
72
79
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
9 Kilworth Close
Date
9 Mar 2022
Current
Potential
70
109
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
9 Mar 2022
70
109
28 Jul 2010
76
77
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
-0.6
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Bands

A
92 - 100
B
81 - 91
C
69 - 80
D
55 -68
E
39 -54
F
54 -38
G
0 - 20

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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Contains Royal Mail data © Royal Mail copyright and Database right 2025.