PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Lexham Gardens, LONDON, W8 5JA

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 Lexham Gardens, W8 5JA 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 Lexham Gardens, LONDON, W8 5JA
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
48 Lexham Gardens
Date
11 Mar 2011
Current
Potential
62
71
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
11 Mar 2011
62
71
Total Floor Area
82 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
50b Lexham Gardens
Date
10 Apr 2018
Current
Potential
74
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
10 Apr 2018
74
80
Total Floor Area
69 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
52a Lexham Gardens
Date
4 May 2011
Current
Potential
58
68
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
4 May 2011
58
68
Total Floor Area
124 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
52A LEXHAM GARDENS, LONDON
Date
8 Apr 2021
Current
Potential
76
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
8 Apr 2021
76
78
Total Floor Area
124 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
58 Lexham Gardens
Date
4 Feb 2013
Current
Potential
67
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
4 Feb 2013
67
83
Total Floor Area
75 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Basement Flat, 58, Lexham Gardens
Date
13 Jan 2008
Current
Potential
77
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
13 Jan 2008
77
79
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Basement Flat (Rear), 58 Lexham Gardens
Date
13 Jul 2022
Current
Potential
78
78
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
before 1900
+
Certificate History
13 Jul 2022
78
78
Total Floor Area
78 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
First Floor Flat, 58
Date
26 Mar 2023
Current
Potential
75
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
26 Mar 2023
75
83
Total Floor Area
88 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
First Floor Flat, 58 Lexham Gardens
Date
12 Jul 2011
Current
Potential
69
72
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
12 Jul 2011
69
72
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
First Floor Flat, 64 Lexham Gardens
Date
26 Jan 2015
Current
Potential
53
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
26 Jan 2015
53
76
Total Floor Area
90 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 1, 48 Lexham Gardens
Date
31 May 2023
Current
Potential
62
75
Property Type
Maisonette
Built Form
Enclosed End-Terrace
Constructed
before 1900
+
Certificate History
31 May 2023
62
75
29 May 2013
67
81
Total Floor Area
106 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat 1, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
65
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
65
79
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 1, 56 Lexham Gardens
Date
29 Jun 2011
Current
Potential
55
66
Property Type
Maisonette
Built Form
Enclosed Mid-Terrace
Constructed
before 1900
+
Certificate History
29 Jun 2011
55
66
Total Floor Area
96 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 10, 50 Lexham Gardens
Date
28 Nov 2019
Current
Potential
70
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
28 Nov 2019
70
79
24 Oct 2009
56
68
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 12, 50 Lexham Gardens
Date
11 Dec 2023
Current
Potential
77
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
11 Dec 2023
77
81
27 Jun 2013
70
74
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 1a, 60 Lexham Gardens
Date
19 Feb 2015
Current
Potential
65
78
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
before 1900
+
Certificate History
19 Feb 2015
65
78
Total Floor Area
39 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 1b, 60 Lexham Gardens
Date
19 Feb 2015
Current
Potential
67
77
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
before 1900
+
Certificate History
19 Feb 2015
67
77
Total Floor Area
73 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 2, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
69
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
69
78
Total Floor Area
113 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
Flat 2, 56 Lexham Gardens
Date
21 Apr 2022
Current
Potential
71
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
21 Apr 2022
71
79
13 Aug 2012
70
74
Total Floor Area
115 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
Flat 2, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
65
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
65
78
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 3, 48 Lexham Gardens
Date
17 May 2017
Current
Potential
66
80
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
+
Certificate History
17 May 2017
66
80
Total Floor Area
51 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 3, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
77
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
77
82
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3, 56 Lexham Gardens
Date
20 Sep 2010
Current
Potential
67
69
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
20 Sep 2010
67
69
7 Sep 2009
64
73
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 3, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
69
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
69
79
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 4, 50 Lexham Gardens
Date
4 Sep 2022
Current
Potential
77
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
4 Sep 2022
77
83
20 Aug 2012
57
79
Total Floor Area
72 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 4, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
72
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
72
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 4, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
68
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
68
80
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 5, 50 Lexham Gardens
Date
29 Sep 2013
Current
Potential
68
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
29 Sep 2013
68
76
Total Floor Area
109 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
Flat 5, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
71
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
71
83
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 5, 56 Lexham Gardens
Date
1 Oct 2008
Current
Potential
77
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
1 Oct 2008
77
79
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
Flat 5, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
63
77
Property Type
Flat
Built Form
Enclosed Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
63
77
Total Floor Area
11 sq m
Current CO2 Emissions Level
0.8
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
79
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
Flat 5, 62 Lexham Gardens
Date
18 Dec 2008
Current
Potential
58
71
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Dec 2008
58
71
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 6, 48 Lexham Gardens
Date
11 Feb 2019
Current
Potential
71
82
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
+
Certificate History
11 Feb 2019
71
82
1 Oct 2008
72
79
Total Floor Area
89 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 6, 50 Lexham Gardens
Date
4 Sep 2018
Current
Potential
66
72
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
4 Sep 2018
66
72
Total Floor Area
100 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 6, 54 Lexham Gardens
Date
17 Jun 2019
Current
Potential
70
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
17 Jun 2019
70
82
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 6, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
69
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
69
82
Total Floor Area
93 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 7, 50 Lexham Gardens
Date
12 Apr 2018
Current
Potential
74
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
12 Apr 2018
74
81
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
Flat 7, 54 Lexham Gardens
Date
20 Nov 2018
Current
Potential
59
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
20 Nov 2018
59
79
Total Floor Area
86 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 7, 60 Lexham Gardens
Date
18 Feb 2015
Current
Potential
57
59
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Feb 2015
57
59
Total Floor Area
92 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 8, 50 Lexham Gardens
Date
21 Mar 2024
Current
Potential
71
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
21 Mar 2024
71
76
10 Oct 2011
71
72
Total Floor Area
79 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat 9, 50 Lexham Gardens
Date
2 Jun 2020
Current
Potential
74
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
2 Jun 2020
74
83
22 Jun 2010
75
81
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Flat B, 62 Lexham Gardens
Date
15 Oct 2017
Current
Potential
48
73
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
15 Oct 2017
48
73
Total Floor Area
88 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat C, 62 Lexham Gardens
Date
19 Apr 2023
Current
Potential
78
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
19 Apr 2023
78
83
29 Jan 2009
70
76
Total Floor Area
64 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
Front Lower Ground Floor Flat, 58 Lexham Gardens
Date
16 Jun 2019
Current
Potential
68
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
16 Jun 2019
68
78
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
Ground Floor Flat, 58 Lexham Gardens
Date
14 Jan 2022
Current
Potential
76
82
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
14 Jan 2022
76
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Raised Ground Floor Flat, 58 Lexham Gardens
Date
10 Feb 2012
Current
Potential
66
71
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
10 Feb 2012
66
71
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Second Floor Flat, 64 Lexham Gardens
Date
6 Sep 2024
Current
Potential
70
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
6 Sep 2024
70
81
1 Mar 2010
73
79
Total Floor Area
81 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Top Floor Flat, 58 Lexham Gardens
Date
5 Jul 2012
Current
Potential
76
83
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
5 Jul 2012
76
83
Total Floor Area
153 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
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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