PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Ffynnon Wen, SWANSEA, SA6 5EQ

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 Ffynnon Wen, SA6 5EQ 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 Ffynnon Wen, SWANSEA, SA6 5EQ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Ffynnon Wen, Clydach
Date
7 Feb 2018
Current
Potential
72
89
Property Type
House
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
7 Feb 2018
72
89
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
10 Ffynnon Wen, Clydach
Date
12 Jul 2023
Current
Potential
75
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
12 Jul 2023
75
90
30 May 2023
74
90
11 Apr 2017
72
90
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
11 Ffynnon Wen, Clydach
Date
18 Apr 2018
Current
Potential
75
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
18 Apr 2018
75
91
23 Sep 2013
66
93
19 Sep 2013
67
92
12 Jun 2013
61
69
5 Nov 2008
66
76
Total Floor Area
58 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
13 Ffynnon Wen, Clydach
Date
6 Feb 2019
Current
Potential
71
88
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
6 Feb 2019
71
88
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
14 Ffynnon Wen, Clydach
Date
16 Feb 2022
Current
Potential
64
86
Property Type
House
Built Form
End-Terrace
Constructed
1996-2002
+
Certificate History
16 Feb 2022
64
86
Total Floor Area
58 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
15 Ffynnon Wen, Clydach
Date
25 Jun 2019
Current
Potential
73
90
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
25 Jun 2019
73
90
8 May 2009
74
78
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
16 Ffynnon Wen, Clydach
Date
11 Feb 2016
Current
Potential
74
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
11 Feb 2016
74
89
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.8
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
17 Ffynnon Wen, Clydach
Date
17 Jul 2023
Current
Potential
69
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
17 Jul 2023
69
85
4 Mar 2020
67
85
Total Floor Area
56 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
18 Ffynnon Wen, Clydach
Date
19 Aug 2014
Current
Potential
69
92
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
19 Aug 2014
69
92
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
19 Ffynnon Wen, Clydach
Date
3 Mar 2015
Current
Potential
65
113
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
3 Mar 2015
65
113
Total Floor Area
61 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
-1.1
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
2 Ffynnon Wen, Clydach
Date
18 Jan 2023
Current
Potential
73
88
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
18 Jan 2023
73
88
2 Jul 2013
69
89
Total Floor Area
61 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
20 Ffynnon Wen, Clydach
Date
3 Dec 2016
Current
Potential
74
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
3 Dec 2016
74
91
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
21 Ffynnon Wen, Clydach
Date
7 Oct 2010
Current
Potential
70
78
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
7 Oct 2010
70
78
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
22 Ffynnon Wen, Clydach
Date
23 Sep 2009
Current
Potential
73
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
23 Sep 2009
73
80
Total Floor Area
58 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
23 Ffynnon Wen, Clydach
Date
17 Sep 2019
Current
Potential
70
88
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
17 Sep 2019
70
88
6 Sep 2009
72
79
6 Sep 2009
71
79
6 Sep 2009
68
76
6 Sep 2009
69
78
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
24 Ffynnon Wen, Clydach
Date
27 Sep 2011
Current
Potential
64
70
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
27 Sep 2011
64
70
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
27 Ffynnon Wen, Clydach
Date
18 Sep 2019
Current
Potential
71
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
18 Sep 2019
71
86
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
28 Ffynnon Wen, Clydach
Date
13 Sep 2018
Current
Potential
76
92
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
13 Sep 2018
76
92
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
29 Ffynnon Wen, Clydach
Date
16 Dec 2008
Current
Potential
74
76
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
16 Dec 2008
74
76
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.1
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
3 Ffynnon Wen, Clydach
Date
1 Apr 2010
Current
Potential
69
75
Property Type
House
Built Form
Enclosed Mid-Terrace
Constructed
1967-1975
+
Certificate History
1 Apr 2010
69
75
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
32 Ffynnon Wen, Clydach
Date
2 Jul 2023
Current
Potential
77
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
2 Jul 2023
77
91
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
34 Ffynnon Wen, Clydach
Date
21 Dec 2024
Current
Potential
72
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
21 Dec 2024
72
89
17 Mar 2014
74
93
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
35 FFYNNON WEN, CLYDACH
Date
2 Aug 2021
Current
Potential
70
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
2 Aug 2021
70
87
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
36 Ffynnon Wen, Clydach
Date
2 Oct 2018
Current
Potential
76
90
Property Type
House
Built Form
Enclosed End-Terrace
Constructed
2003-2006
+
Certificate History
2 Oct 2018
76
90
3 Oct 2008
71
78
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
38 Ffynnon Wen, Clydach
Date
5 Nov 2015
Current
Potential
61
90
Property Type
House
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
5 Nov 2015
61
90
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
39 Ffynnon Wen, Clydach
Date
21 Dec 2023
Current
Potential
72
88
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
21 Dec 2023
72
88
Total Floor Area
58 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
4 Ffynnon Wen, Clydach
Date
10 Sep 2018
Current
Potential
73
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
10 Sep 2018
73
90
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
41 Ffynnon Wen, Clydach
Date
26 Jun 2014
Current
Potential
73
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
26 Jun 2014
73
91
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
42 Ffynnon Wen, Clydach
Date
24 Jun 2019
Current
Potential
75
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
24 Jun 2019
75
91
27 May 2009
74
80
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
43 Ffynnon Wen, Clydach
Date
27 Jul 2020
Current
Potential
72
93
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Jul 2020
72
93
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
44 Ffynnon Wen, Clydach
Date
21 Dec 2021
Current
Potential
75
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
21 Dec 2021
75
91
27 Sep 2011
68
73
10 Nov 2008
75
80
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
45 Ffynnon Wen, Clydach
Date
18 Apr 2023
Current
Potential
75
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
18 Apr 2023
75
90
24 Aug 2011
73
74
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
46 Ffynnon Wen, Clydach
Date
8 Jul 2014
Current
Potential
74
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
8 Jul 2014
74
91
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
49 Ffynnon Wen, Clydach
Date
21 Jul 2015
Current
Potential
70
87
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
21 Jul 2015
70
87
Total Floor Area
53 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5 Ffynnon Wen, Clydach
Date
30 Sep 2012
Current
Potential
75
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
30 Sep 2012
75
89
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
50 Ffynnon Wen, Clydach
Date
15 Mar 2024
Current
Potential
73
88
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
15 Mar 2024
73
88
21 Jun 2010
68
76
Total Floor Area
61 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
51 Ffynnon Wen, Clydach
Date
15 Jun 2017
Current
Potential
72
89
Property Type
House
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
15 Jun 2017
72
89
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
52 Ffynnon Wen, Clydach
Date
8 Jul 2010
Current
Potential
72
77
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
8 Jul 2010
72
77
Total Floor Area
53 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
52 FFYNNON WEN, CLYDACH
Date
7 May 2021
Current
Potential
73
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
7 May 2021
73
90
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
53 Ffynnon Wen, Clydach
Date
15 Jun 2017
Current
Potential
74
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
15 Jun 2017
74
91
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
54 Ffynnon Wen, Clydach
Date
5 Feb 2010
Current
Potential
77
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
5 Feb 2010
77
79
5 Oct 2008
73
81
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
55 Ffynnon Wen, Clydach
Date
9 May 2010
Current
Potential
72
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
9 May 2010
72
79
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
56 Ffynnon Wen, Clydach
Date
14 Dec 2015
Current
Potential
67
86
Property Type
House
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
14 Dec 2015
67
86
Total Floor Area
53 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
57 Ffynnon Wen, Clydach
Date
18 Apr 2018
Current
Potential
68
88
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
18 Apr 2018
68
88
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
6 Ffynnon Wen, Clydach
Date
20 May 2018
Current
Potential
72
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
20 May 2018
72
89
Total Floor Area
52 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
7 Ffynnon Wen, Clydach
Date
17 Mar 2018
Current
Potential
68
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
17 Mar 2018
68
89
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
8 Ffynnon Wen, Clydach
Date
23 Nov 2022
Current
Potential
76
93
Property Type
House
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
23 Nov 2022
76
93
Total Floor Area
53 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
9 Ffynnon Wen, Clydach
Date
2 Oct 2018
Current
Potential
76
91
Property Type
House
Built Form
Mid-Terrace
Constructed
1996-2002
+
Certificate History
2 Oct 2018
76
91
3 Oct 2008
73
78
Total Floor Area
59 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
26
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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