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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Groeslon, CAERNARFON, LL54 7DN

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 LL54 7DN 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 Groeslon, CAERNARFON, LL54 7DN
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
Bryn Afon, Groeslon
Date
15 Jun 2009
Current
Potential
13
39
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
15 Jun 2009
13
39
Total Floor Area
78 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
7.6
CO2 per sq m per Year
137
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
Flat 1, Penfforddelen
Date
18 May 2023
Current
Potential
33
72
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
+
Certificate History
18 May 2023
33
72
Total Floor Area
44 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
122
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 2, Penfforddelen
Date
5 Sep 2022
Current
Potential
25
73
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
before 1900
+
Certificate History
5 Sep 2022
25
73
Total Floor Area
39 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
109
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
2
Address
Flat 3, Penfforddelen
Date
5 Sep 2022
Current
Potential
40
61
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
before 1900
+
Certificate History
5 Sep 2022
40
61
Total Floor Area
34 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
107
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 4, Penfforddelen
Date
5 Sep 2022
Current
Potential
42
67
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
5 Sep 2022
42
67
Total Floor Area
81 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
79
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
1
Address
Flat 5, Penfforddelen
Date
5 Sep 2022
Current
Potential
59
67
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
5 Sep 2022
59
67
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
55
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
1
Address
Flat 6 Penfforddelen, Groeslon
Date
17 Jul 2018
Current
Potential
45
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
17 Jul 2018
45
76
Total Floor Area
71 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
73
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
0
Address
Flat 7, Penfforddelen
Date
5 Sep 2022
Current
Potential
37
59
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
5 Sep 2022
37
59
Total Floor Area
37 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
149
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
Flat 8, Penfforddelen
Date
5 Sep 2022
Current
Potential
38
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
5 Sep 2022
38
73
Total Floor Area
48 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
104
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
1
Address
Fron Heulog, Groeslon
Date
11 May 2010
Current
Potential
21
28
Property Type
Bungalow
Built Form
Detached
Constructed
before 1900
+
Certificate History
11 May 2010
21
28
Total Floor Area
110 sq m
Current CO2 Emissions Level
8.4
Potential CO2 Emissions Level
7.2
CO2 per sq m per Year
60
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
1
Address
Tyr Ysgol, Penfforddelen
Date
13 Jan 2025
Current
Potential
72
101
Property Type
House
Built Form
Detached
Constructed
before 1900
+
Certificate History
13 Jan 2025
72
101
30 Jul 2024
10
98
Total Floor Area
107 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
-0.3
CO2 per sq m per Year
26
Mains Gas Available
No
Habitable Rooms
6
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.

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