PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Windermere Avenue, WARRINGTON, WA2 0ND
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 Windermere Avenue, WA2 0ND 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 Windermere Avenue, WARRINGTON, WA2 0ND
Period Covered:
2008 - 31 October 2024
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
100 Windermere Avenue
Date
29 Jan 2009
Current
Potential
54
69
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
29 Jan 2009
54
69
Total Floor Area
89 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
68
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
101 Windermere Avenue
Date
21 Jun 2009
Current
Potential
79
79
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Jun 2009
79
79
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
101a Windermere Avenue
Date
15 Nov 2019
Current
Potential
57
60
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
15 Nov 2019
57
60
13 Aug 2009
79
79
18 Dec 2008
68
68
Total Floor Area
40 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
101A Windermere Avenue, Orford
Date
7 Aug 2023
Current
Potential
87
89
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
7 Aug 2023
87
89
7 Aug 2023
88
90
Total Floor Area
43 sq m
Current CO2 Emissions Level
0.8
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
103 Windermere Avenue
Date
3 Feb 2022
Current
Potential
70
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
3 Feb 2022
70
73
20 Oct 2008
63
74
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
103a Windermere Avenue
Date
26 Nov 2013
Current
Potential
73
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
26 Nov 2013
73
73
4 Jun 2009
64
64
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
103A Windermere Avenue, Orford
Date
9 Oct 2023
Current
Potential
66
72
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
9 Oct 2023
66
72
Total Floor Area
42 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
105 Windermere Avenue
Date
12 Mar 2009
Current
Potential
68
70
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
12 Mar 2009
68
70
14 Nov 2023
60
71
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
105a Windermere Avenue
Date
2 Nov 2023
Current
Potential
79
83
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
2 Nov 2023
79
83
Total Floor Area
36 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
105A Windermere Avenue, Orford
Date
7 Aug 2023
Current
Potential
88
88
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
7 Aug 2023
88
88
Total Floor Area
44 sq m
Current CO2 Emissions Level
0.8
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
18
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
107 Windermere Avenue
Date
14 Oct 2009
Current
Potential
73
74
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
14 Oct 2009
73
74
9 Oct 2023
58
68
Total Floor Area
41 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
107A WINDERMERE AVENUE
Date
17 Jun 2021
Current
Potential
81
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
17 Jun 2021
81
83
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
107A Windermere Avenue, Orford
Date
27 Apr 2023
Current
Potential
92
95
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
27 Apr 2023
92
95
Total Floor Area
45 sq m
Current CO2 Emissions Level
0.6
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
12
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
109 Windermere Avenue
Date
19 Nov 2009
Current
Potential
41
48
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
19 Nov 2009
41
48
Total Floor Area
41 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
109 WINDERMERE AVENUE, POPLARS AND HULME
Date
7 Jan 2021
Current
Potential
59
70
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
7 Jan 2021
59
70
Total Floor Area
39 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
109a Windermere Avenue
Date
11 Jul 2022
Current
Potential
72
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 Jul 2022
72
74
13 Oct 2008
71
71
Total Floor Area
53 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
109A Windermere Avenue, Orford
Date
9 Oct 2023
Current
Potential
74
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
9 Oct 2023
74
78
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
111 WINDERMERE AVENUE
Date
11 Jul 2021
Current
Potential
80
82
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 Jul 2021
80
82
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
111 Windermere Avenue
Date
5 Nov 2008
Current
Potential
76
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
5 Nov 2008
76
78
14 Nov 2023
65
74
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
111a Windermere Avenue
Date
14 Oct 2009
Current
Potential
76
78
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
14 Oct 2009
76
78
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
113 Windermere Avenue
Date
29 Jun 2023
Current
Potential
71
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
29 Jun 2023
71
73
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
115 Windermere Avenue
Date
14 Oct 2009
Current
Potential
74
74
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
14 Oct 2009
74
74
9 Nov 2023
60
70
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
115a, Windermere Avenue
Date
26 Nov 2013
Current
Potential
74
74
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
26 Nov 2013
74
74
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
115a Windermere Avenue
Date
17 May 2023
Current
Potential
62
62
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
17 May 2023
62
62
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
64 Windermere Avenue
Date
27 Jul 2010
Current
Potential
64
70
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
27 Jul 2010
64
70
Total Floor Area
73 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
66 Windermere Avenue
Date
13 Oct 2009
Current
Potential
70
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
13 Oct 2009
70
75
22 Oct 2023
61
81
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
68 Windermere Avenue, Orford
Date
27 Apr 2023
Current
Potential
67
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
27 Apr 2023
67
86
27 Apr 2023
69
87
Total Floor Area
72 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
72 Windermere Avenue
Date
4 Jun 2014
Current
Potential
64
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
4 Jun 2014
64
87
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
74 Windermere Avenue
Date
16 Jul 2014
Current
Potential
11
85
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
16 Jul 2014
11
85
29 Jun 2014
14
83
13 Mar 2014
59
87
Total Floor Area
75 sq m
Current CO2 Emissions Level
8.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
111
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
74 WINDERMERE AVENUE, POPLARS AND HULME
Date
23 Nov 2020
Current
Potential
68
82
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
23 Nov 2020
68
82
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
76 WINDERMERE AVENUE
Date
6 Jul 2021
Current
Potential
67
82
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
6 Jul 2021
67
82
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
80 Windermere Avenue
Date
12 Oct 2009
Current
Potential
76
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2009
76
77
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
82 Windermere Avenue
Date
21 Oct 2009
Current
Potential
70
76
Property Type
House
Built Form
Mid-Terrace
Constructed
N/A
Certificate History
21 Oct 2009
70
76
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
82 WINDERMERE AVENUE, POPLARS AND HULME
Date
14 Oct 2020
Current
Potential
67
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
14 Oct 2020
67
83
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
84 Windermere Avenue
Date
10 Jan 2015
Current
Potential
61
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
10 Jan 2015
61
84
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
85 Windermere Avenue
Date
15 Oct 2009
Current
Potential
70
75
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
15 Oct 2009
70
75
9 Nov 2023
62
83
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
86 Windermere Avenue
Date
6 Mar 2014
Current
Potential
58
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
6 Mar 2014
58
82
16 Oct 2013
60
84
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
87 Windermere Avenue
Date
6 Apr 2022
Current
Potential
64
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
6 Apr 2022
64
86
Total Floor Area
64 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
89 Windermere Avenue
Date
12 Oct 2009
Current
Potential
69
71
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2009
69
71
9 Nov 2023
61
82
Total Floor Area
79 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
90 Windermere Avenue
Date
9 Feb 2022
Current
Potential
64
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
9 Feb 2022
64
84
11 Jul 2011
28
46
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
91 Windermere Avenue
Date
12 Oct 2009
Current
Potential
64
71
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2009
64
71
Total Floor Area
65 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
92, Windermere Avenue
Date
29 Jul 2020
Current
Potential
68
84
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
29 Jul 2020
68
84
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
93 Windermere Avenue
Date
26 Aug 2021
Current
Potential
73
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
26 Aug 2021
73
87
Total Floor Area
75 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
94 WINDERMERE AVENUE
Date
1 Jul 2021
Current
Potential
70
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
1 Jul 2021
70
88
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
94 Windermere Avenue
Date
13 Oct 2009
Current
Potential
75
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
13 Oct 2009
75
77
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
95 Windermere Avenue
Date
2 Dec 2021
Current
Potential
70
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
2 Dec 2021
70
87
6 Apr 2010
72
77
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
96 Windermere Avenue
Date
12 Oct 2009
Current
Potential
72
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2009
72
77
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
97 Windermere Avenue
Date
1 Jul 2022
Current
Potential
71
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
1 Jul 2022
71
88
13 Oct 2009
59
69
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
98 Windermere Avenue
Date
12 Oct 2009
Current
Potential
76
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2009
76
77
14 Nov 2023
69
87
Total Floor Area
65 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
99 Windermere Avenue
Date
2 Jun 2011
Current
Potential
59
72
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
2 Jun 2011
59
72
Total Floor Area
73 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
5
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.
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