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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Trefonnen Estate, HOLYHEAD, LL65 1AJ

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 Trefonnen Estate, LL65 1AJ 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 Trefonnen Estate, HOLYHEAD, LL65 1AJ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Trefonnen Estate
Date
14 May 2015
Current
Potential
64
83
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
14 May 2015
64
83
Total Floor Area
112 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
10 Trefonnen Estate
Date
17 Apr 2016
Current
Potential
63
81
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
17 Apr 2016
63
81
Total Floor Area
95 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
11 Trefonnen Estate
Date
17 Oct 2019
Current
Potential
66
76
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
17 Oct 2019
66
76
Total Floor Area
129 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
12 Trefonnen Estate
Date
10 Dec 2013
Current
Potential
69
82
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
10 Dec 2013
69
82
Total Floor Area
108 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
14 Trefonnen Estate
Date
15 Oct 2019
Current
Potential
68
83
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
15 Oct 2019
68
83
Total Floor Area
101 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
15 Trefonnen Estate
Date
10 May 2015
Current
Potential
70
83
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
10 May 2015
70
83
Total Floor Area
104 sq m
Current CO2 Emissions Level
3.7
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
2 Trefonnen Estate
Date
5 Mar 2009
Current
Potential
53
70
Property Type
Bungalow
Built Form
Detached
Constructed
1976-1982
+
Certificate History
5 Mar 2009
53
70
Total Floor Area
93 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
62
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
20 Trefonnen Estate
Date
5 Sep 2019
Current
Potential
55
80
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
5 Sep 2019
55
80
Total Floor Area
81 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
20a Trefonnen Estate
Date
27 Jul 2016
Current
Potential
66
77
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
27 Jul 2016
66
77
Total Floor Area
148 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
22 Trefonnen Estate
Date
18 Jan 2023
Current
Potential
59
82
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
18 Jan 2023
59
82
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
24 TREFONNEN ESTATE
Date
23 Jun 2021
Current
Potential
56
81
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
23 Jun 2021
56
81
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
27 Trefonnen Estate
Date
3 Nov 2011
Current
Potential
48
69
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
3 Nov 2011
48
69
Total Floor Area
104 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
28 Trefonnen Estate
Date
12 Sep 2023
Current
Potential
60
83
Property Type
Bungalow
Built Form
Detached
Constructed
1976-1982
+
Certificate History
12 Sep 2023
60
83
16 Jul 2009
58
71
Total Floor Area
76 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
29 Trefonnen Estate
Date
7 Oct 2010
Current
Potential
56
67
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
7 Oct 2010
56
67
Total Floor Area
99 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
5 Trefonnen Estate
Date
8 Oct 2008
Current
Potential
37
69
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
8 Oct 2008
37
69
Total Floor Area
124 sq m
Current CO2 Emissions Level
8.2
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
76
Mains Gas Available
Yes
Habitable Rooms
6
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.
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