PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Crowhall Lane, GATESHEAD, NE10 0NF

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 Crowhall Lane, NE10 0NF 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 Crowhall Lane, GATESHEAD, NE10 0NF
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Crowhall Towers, Crowhall Lane
Date
15 Sep 2014
Current
Potential
55
60
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Sep 2014
55
60
18 Jan 2014
49
60
Total Floor Area
69 sq m
Current CO2 Emissions Level
7.0
Potential CO2 Emissions Level
6.5
CO2 per sq m per Year
102
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
10 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
65
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
65
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
77
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
11 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
61
69
22 Sep 2010
58
60
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
12 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
61
69
8 Jun 2011
66
70
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
86
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
13 Crowhall Towers, Crowhall Lane
Date
18 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
18 Jan 2014
64
72
13 Aug 2011
69
71
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
14 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
57
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
57
66
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
96
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
15 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
61
69
1 Feb 2011
46
50
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
16 Crowhall Towers, Crowhall Lane
Date
12 Aug 2016
Current
Potential
66
72
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
12 Aug 2016
66
72
14 Jan 2014
64
72
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
71
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
17 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
56
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
56
66
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
97
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
18 Crowhall Towers, Crowhall Lane
Date
28 Apr 2015
Current
Potential
62
70
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
28 Apr 2015
62
70
16 Jan 2014
60
69
Total Floor Area
69 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
19 Crowhall Towers, Crowhall Lane
Date
15 Sep 2014
Current
Potential
70
73
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
15 Sep 2014
70
73
16 Jan 2014
64
72
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
68
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
2 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
55
66
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
55
66
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
5.4
CO2 per sq m per Year
95
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
20 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
68
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
68
14 Jan 2013
63
68
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
89
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
21 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
69
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
22 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
23 Crowhall Towers, Crowhall Lane
Date
3 Sep 2015
Current
Potential
61
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
3 Sep 2015
61
73
16 Jan 2014
60
68
Total Floor Area
69 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
24 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
61
69
1 Feb 2011
58
62
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
25 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
26 Crowhall Towers, Crowhall Lane
Date
9 Jun 2015
Current
Potential
57
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
9 Jun 2015
57
66
18 Jan 2014
57
66
Total Floor Area
69 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
27 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
28 Crowhall Towers, Crowhall Lane
Date
18 Jan 2014
Current
Potential
57
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
18 Jan 2014
57
66
1 Feb 2011
57
61
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
97
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
29 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
69
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
3 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
47
59
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
47
59
Total Floor Area
70 sq m
Current CO2 Emissions Level
8.0
Potential CO2 Emissions Level
6.5
CO2 per sq m per Year
115
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
30 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
31 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
68
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
68
5 Dec 2012
62
67
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
89
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
32 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
69
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
33 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
64
72
10 Jul 2013
68
71
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
34 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
68
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
68
28 May 2013
68
74
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
89
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
35 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
61
69
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
36 Crowhall Towers, Crowhall Lane
Date
18 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
18 Jan 2014
64
72
5 Jul 2012
70
74
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
37 Crowhall Towers, Crowhall Lane
Date
18 Jan 2014
Current
Potential
56
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
18 Jan 2014
56
66
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
97
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
38 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
61
69
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
39 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
4 Crowhall Towers, Crowhall Lane
Date
15 Jan 2014
Current
Potential
49
60
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2014
49
60
10 Jul 2013
56
60
Total Floor Area
70 sq m
Current CO2 Emissions Level
8.0
Potential CO2 Emissions Level
6.7
CO2 per sq m per Year
114
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
40 Crowhall Towers, Crowhall Lane
Date
14 Jan 2014
Current
Potential
56
66
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
14 Jan 2014
56
66
14 Jan 2013
63
68
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
97
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
41 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
69
29 Jan 2009
53
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
42 Crowhall Towers, Crowhall Lane
Date
10 Nov 2014
Current
Potential
68
73
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
10 Nov 2014
68
73
16 Jan 2014
64
72
Total Floor Area
69 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
72
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
43 Crowhall Towers, Crowhall Lane
Date
31 Mar 2015
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
31 Mar 2015
61
69
16 Jan 2014
60
68
Total Floor Area
69 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.6
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
44 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
69
13 Aug 2011
65
67
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
88
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
45 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
64
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
64
72
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
46 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
60
68
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
60
68
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
89
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
5 Crowhall Towers, Crowhall Lane
Date
15 Jan 2016
Current
Potential
52
62
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1950-1966
+
Certificate History
15 Jan 2016
52
62
18 Jan 2014
53
62
Total Floor Area
69 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
98
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
6 Crowhall Towers, Crowhall Lane
Date
26 Feb 2014
Current
Potential
53
59
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
26 Feb 2014
53
59
15 Jan 2014
45
56
Total Floor Area
69 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
6.7
CO2 per sq m per Year
106
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
7 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
61
69
8 Jun 2011
66
70
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
86
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
8 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
65
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
65
72
13 Jan 2014
69
73
Total Floor Area
70 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
77
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
9 Crowhall Towers, Crowhall Lane
Date
16 Jan 2014
Current
Potential
61
69
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Jan 2014
61
69
19 Jun 2012
66
71
Total Floor Area
70 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
The Greyhound, Crowhall Lane
Date
20 May 2013
Current
Potential
26
51
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
20 May 2013
26
51
Total Floor Area
98 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
9.9
CO2 per sq m per Year
108
Mains Gas Available
No
Habitable Rooms
5
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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