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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Observatory Close, WALLINGFORD, OX10 6NU

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 Observatory Close, OX10 6NU 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 Observatory Close, WALLINGFORD, OX10 6NU
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Observatory Close, Benson
Date
7 May 2015
Current
Potential
59
83
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
7 May 2015
59
83
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
3
Address
12 OBSERVATORY CLOSE, BENSON
Date
10 Jan 2021
Current
Potential
75
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
10 Jan 2021
75
86
Total Floor Area
92 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
13 Observatory Close, Benson
Date
6 Aug 2024
Current
Potential
74
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
6 Aug 2024
74
88
25 Sep 2013
57
88
Total Floor Area
84 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
16 Observatory Close, Benson
Date
8 May 2014
Current
Potential
59
81
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
8 May 2014
59
81
Total Floor Area
102 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
17 Observatory Close, Benson
Date
5 Dec 2022
Current
Potential
88
91
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
5 Dec 2022
88
91
9 Jul 2012
71
82
Total Floor Area
148 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
15
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
2 Observatory Close, Benson
Date
6 Jul 2014
Current
Potential
66
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
6 Jul 2014
66
89
14 Sep 2009
77
80
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
20 Observatory Close, Benson
Date
6 Nov 2008
Current
Potential
70
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
6 Nov 2008
70
79
Total Floor Area
85 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
22 Observatory Close, Benson
Date
5 May 2014
Current
Potential
72
89
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
+
Certificate History
5 May 2014
72
89
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.7
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
24 Observatory Close, Benson
Date
19 May 2019
Current
Potential
71
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
19 May 2019
71
83
Total Floor Area
104 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Observatory Close, Benson
Date
18 Aug 2009
Current
Potential
69
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
18 Aug 2009
69
79
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
27 Observatory Close, Benson
Date
4 Feb 2020
Current
Potential
69
86
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
4 Feb 2020
69
86
17 Jun 2010
74
78
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
28 Observatory Close, Benson
Date
11 Apr 2024
Current
Potential
39
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
11 Apr 2024
39
86
8 May 2011
63
76
Total Floor Area
83 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
62
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
1
Address
3 Observatory Close, Benson
Date
19 Jun 2017
Current
Potential
74
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
19 Jun 2017
74
89
Total Floor Area
82 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
30 Observatory Close, Benson
Date
17 Apr 2024
Current
Potential
72
78
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
17 Apr 2024
72
78
18 Jun 2012
61
85
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
35 Observatory Close, Benson
Date
13 Oct 2009
Current
Potential
45
54
Property Type
House
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
13 Oct 2009
45
54
Total Floor Area
203 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
8.5
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
4 Observatory Close, Benson
Date
9 Jan 2015
Current
Potential
63
83
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
9 Jan 2015
63
83
11 Aug 2013
56
80
Total Floor Area
102 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
6 Observatory Close, Benson
Date
10 Mar 2011
Current
Potential
71
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
10 Mar 2011
71
80
Total Floor Area
82 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
38
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.

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