PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
St. James Avenue, ONGAR, CM5 9EL

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 St. James Avenue, CM5 9EL 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 St. James Avenue, ONGAR, CM5 9EL
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 St. James Avenue
Date
4 Jul 2011
Current
Potential
58
61
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
4 Jul 2011
58
61
Total Floor Area
118 sq m
Current CO2 Emissions Level
8.5
Potential CO2 Emissions Level
8.1
CO2 per sq m per Year
72
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
10 ST. JAMES AVENUE
Date
2 Aug 2021
Current
Potential
63
84
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
2 Aug 2021
63
84
Total Floor Area
106 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
10 St. James Avenue
Date
9 Jun 2009
Current
Potential
34
71
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
9 Jun 2009
34
71
Total Floor Area
141 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
84
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
12 St. James Avenue
Date
21 Nov 2013
Current
Potential
49
81
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
21 Nov 2013
49
81
Total Floor Area
100 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
13 St. James Avenue
Date
17 Mar 2019
Current
Potential
60
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
17 Mar 2019
60
84
22 Jan 2009
57
73
Total Floor Area
108 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
15 St. James Avenue
Date
24 Oct 2019
Current
Potential
53
85
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
24 Oct 2019
53
85
Total Floor Area
105 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
17 St. James Avenue
Date
23 Jul 2015
Current
Potential
53
75
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
23 Jul 2015
53
75
Total Floor Area
134 sq m
Current CO2 Emissions Level
7.4
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
4
Address
18 St. James Avenue
Date
8 May 2014
Current
Potential
62
78
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
8 May 2014
62
78
Total Floor Area
151 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
4
Address
19 St. James Avenue
Date
13 Apr 2016
Current
Potential
59
82
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
13 Apr 2016
59
82
Total Floor Area
127 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
2 St. James Avenue
Date
25 Jan 2010
Current
Potential
72
77
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
25 Jan 2010
72
77
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
21 St. James Avenue
Date
29 Apr 2015
Current
Potential
44
85
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
29 Apr 2015
44
85
Total Floor Area
92 sq m
Current CO2 Emissions Level
6.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
75
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
24 St. James Avenue
Date
15 Jun 2020
Current
Potential
62
82
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
15 Jun 2020
62
82
Total Floor Area
117 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
26 St. James Avenue
Date
2 Nov 2015
Current
Potential
62
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
2 Nov 2015
62
80
26 Aug 2009
47
54
Total Floor Area
147 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
2a St. James Avenue
Date
21 Jun 2023
Current
Potential
76
80
Property Type
Flat
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
21 Jun 2023
76
80
19 Apr 2015
66
79
Total Floor Area
62 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
2c St. James Avenue
Date
11 Nov 2014
Current
Potential
56
77
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
11 Nov 2014
56
77
30 Mar 2009
61
80
Total Floor Area
61 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
3 St. James Avenue
Date
26 Jan 2016
Current
Potential
66
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
26 Jan 2016
66
86
29 Jun 2012
56
87
Total Floor Area
94 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
37 ST JAMES AVENUE, ONGAR
Date
21 Jan 2021
Current
Potential
74
74
Property Type
Flat
Built Form
Detached
Constructed
2003-2006
+
Certificate History
21 Jan 2021
74
74
Total Floor Area
50 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
37 St. James Avenue
Date
10 Jan 2011
Current
Potential
74
80
Property Type
Flat
Built Form
Detached
Constructed
1996-2002
+
Certificate History
10 Jan 2011
74
80
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
37a St. James Avenue
Date
27 Apr 2016
Current
Potential
65
73
Property Type
Maisonette
Built Form
Detached
Constructed
1996-2002
+
Certificate History
27 Apr 2016
65
73
5 Aug 2009
71
74
Total Floor Area
62 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
67
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
39 St. James Avenue
Date
31 May 2023
Current
Potential
69
78
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
31 May 2023
69
78
21 Oct 2017
59
74
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
39a St. James Avenue
Date
4 Jun 2019
Current
Potential
68
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
4 Jun 2019
68
74
14 Jul 2009
68
69
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
4 St. James Avenue
Date
29 Aug 2016
Current
Potential
68
77
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
29 Aug 2016
68
77
Total Floor Area
60 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
47 St. James Avenue
Date
17 Sep 2019
Current
Potential
66
77
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
17 Sep 2019
66
77
Total Floor Area
154 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
4
Address
4b St. James Avenue
Date
3 Apr 2017
Current
Potential
63
78
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
3 Apr 2017
63
78
14 Oct 2009
68
74
Total Floor Area
60 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
52
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.

Contains public sector information licensed under the Open Government Licence v3.0.
Contains Royal Mail data © Royal Mail copyright and Database right 2025.