PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Sotheby Rise, NORTHAMPTON, NN3 5EH

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 Sotheby Rise, NN3 5EH 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 Sotheby Rise, NORTHAMPTON, NN3 5EH
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Sotheby Rise
Date
21 Apr 2016
Current
Potential
69
87
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
21 Apr 2016
69
87
25 Nov 2015
71
88
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
10 Sotheby Rise
Date
6 Jan 2011
Current
Potential
71
76
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
6 Jan 2011
71
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
11 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
12 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
76
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
15
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
13 Sotheby Rise
Date
11 Mar 2014
Current
Potential
63
79
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
11 Mar 2014
63
79
22 Jun 2011
65
70
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
14 Sotheby Rise
Date
21 Oct 2015
Current
Potential
69
87
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
21 Oct 2015
69
87
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
15 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
16 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
17 Sotheby Rise
Date
30 Jul 2012
Current
Potential
69
86
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
30 Jul 2012
69
86
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
18 Sotheby Rise
Date
11 Aug 2014
Current
Potential
71
89
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
11 Aug 2014
71
89
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
19 Sotheby Rise
Date
25 Apr 2012
Current
Potential
64
89
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
25 Apr 2012
64
89
Total Floor Area
52 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
2 Sotheby Rise
Date
9 Apr 2011
Current
Potential
73
79
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
9 Apr 2011
73
79
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
20 Sotheby Rise
Date
1 Sep 2013
Current
Potential
67
84
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
1 Sep 2013
67
84
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
21 Sotheby Rise
Date
18 Sep 2011
Current
Potential
71
72
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
18 Sep 2011
71
72
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
22 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
23 Sotheby Rise
Date
11 Dec 2024
Current
Potential
87
90
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
11 Dec 2024
87
90
26 Jul 2014
71
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
18
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
24 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
25 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
26 Sotheby Rise
Date
30 Oct 2008
Current
Potential
66
74
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
30 Oct 2008
66
74
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
27 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
28 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
29 Sotheby Rise
Date
13 Feb 2012
Current
Potential
58
69
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
13 Feb 2012
58
69
Total Floor Area
62 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
3 Sotheby Rise
Date
16 Jan 2025
Current
Potential
85
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
16 Jan 2025
85
88
7 Jan 2010
58
70
Total Floor Area
61 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
21
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
30 Sotheby Rise
Date
27 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
31 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
32 Sotheby Rise
Date
27 Apr 2015
Current
Potential
68
86
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
27 Apr 2015
68
86
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
33 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
34 Sotheby Rise
Date
26 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
35 Sotheby Rise
Date
11 Dec 2015
Current
Potential
66
85
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
11 Dec 2015
66
85
26 Nov 2015
71
88
Total Floor Area
59 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
36 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
37 Sotheby Rise
Date
17 Jul 2014
Current
Potential
61
79
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
17 Jul 2014
61
79
2 Dec 2008
71
78
Total Floor Area
63 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
38 Sotheby Rise
Date
27 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Nov 2015
72
89
27 Nov 2015
72
89
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
39 Sotheby Rise
Date
27 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
4 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
40 Sotheby Rise
Date
27 Nov 2015
Current
Potential
72
89
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.1
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
41 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
42 Sotheby Rise
Date
11 Dec 2024
Current
Potential
81
85
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
11 Dec 2024
81
85
12 Jan 2012
62
67
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
43 Sotheby Rise
Date
27 Nov 2015
Current
Potential
91
95
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
27 Nov 2015
91
95
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.7
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
12
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
44 Sotheby Rise
Date
7 Jun 2016
Current
Potential
70
74
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
7 Jun 2016
70
74
11 Mar 2009
71
79
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
45 Sotheby Rise
Date
6 Aug 2024
Current
Potential
88
92
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1983-1990
+
Certificate History
6 Aug 2024
88
92
26 Nov 2015
71
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
14
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
46 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
76
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.4
CO2 per sq m per Year
15
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
47 Sotheby Rise
Date
19 Aug 2024
Current
Potential
72
77
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
19 Aug 2024
72
77
27 Jul 2011
72
73
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.9
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
15
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
48 Sotheby Rise
Date
18 Oct 2024
Current
Potential
89
92
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
18 Oct 2024
89
92
31 Mar 2012
64
68
Total Floor Area
62 sq m
Current CO2 Emissions Level
0.8
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
13
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
49 Sotheby Rise
Date
12 Nov 2013
Current
Potential
58
77
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
12 Nov 2013
58
77
Total Floor Area
61 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
5 Sotheby Rise
Date
23 Apr 2010
Current
Potential
73
78
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
23 Apr 2010
73
78
11 Apr 2010
67
76
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
6 Sotheby Rise
Date
24 Jan 2014
Current
Potential
72
90
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
24 Jan 2014
72
90
Total Floor Area
63 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
7 Sotheby Rise
Date
29 Mar 2017
Current
Potential
84
88
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1983-1990
+
Certificate History
29 Mar 2017
84
88
26 Nov 2015
72
89
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
20
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
8 Sotheby Rise
Date
1 Oct 2013
Current
Potential
70
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
1 Oct 2013
70
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
9 Sotheby Rise
Date
26 Nov 2015
Current
Potential
71
88
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
26 Nov 2015
71
88
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
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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