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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Bontnewydd, CAERNARFON, LL54 7YG

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 7YG 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 Bontnewydd, CAERNARFON, LL54 7YG
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
ALLT WEN FFRWD CAE DU
Date
10 Dec 2020
Current
Potential
37
78
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
10 Dec 2020
37
78
Total Floor Area
102 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
103
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
0
Address
Bodgipris, Bontnewydd
Date
13 Dec 2017
Current
Potential
41
77
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
13 Dec 2017
41
77
Total Floor Area
136 sq m
Current CO2 Emissions Level
15.0
Potential CO2 Emissions Level
7.0
CO2 per sq m per Year
108
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
0
Address
Bryn, Bontnewydd
Date
15 Apr 2014
Current
Potential
44
72
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
15 Apr 2014
44
72
Total Floor Area
126 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
6.8
CO2 per sq m per Year
83
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
1
Address
Cae Helygen, Bontnewydd
Date
21 Jun 2018
Current
Potential
67
106
Property Type
Bungalow
Built Form
Detached
Constructed
before 1900
+
Certificate History
21 Jun 2018
67
106
Total Floor Area
90 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
-0.7
CO2 per sq m per Year
32
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
Cefn Farm, Bontnewydd
Date
27 Apr 2014
Current
Potential
25
85
Property Type
House
Built Form
Semi-Detached
Constructed
before 1900
+
Certificate History
27 Apr 2014
25
85
Total Floor Area
162 sq m
Current CO2 Emissions Level
14.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
87
Mains Gas Available
No
Habitable Rooms
7
Number of Extensions
0
Address
Ceiri, Bontnewydd
Date
18 Apr 2022
Current
Potential
53
69
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
18 Apr 2022
53
69
Total Floor Area
108 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
52
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
0
Address
Derwin, Bontnewydd
Date
29 Sep 2016
Current
Potential
25
76
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
29 Sep 2016
25
76
29 Sep 2016
29
75
Total Floor Area
184 sq m
Current CO2 Emissions Level
16.0
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
85
Mains Gas Available
No
Habitable Rooms
13
Number of Extensions
0
Address
Glasfryn, Bontnewydd
Date
11 Apr 2010
Current
Potential
37
69
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
11 Apr 2010
37
69
7 Jan 2009
34
69
Total Floor Area
106 sq m
Current CO2 Emissions Level
9.6
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
91
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
Glenydd, Bontnewydd
Date
26 Mar 2018
Current
Potential
55
78
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
26 Mar 2018
55
78
Total Floor Area
130 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
Gwenfro, Bontnewydd
Date
14 May 2015
Current
Potential
38
79
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
14 May 2015
38
79
Total Floor Area
111 sq m
Current CO2 Emissions Level
8.7
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
78
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
0
Address
Gwynfa, Bontnewydd
Date
28 Jul 2014
Current
Potential
41
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Jul 2014
41
80
Total Floor Area
103 sq m
Current CO2 Emissions Level
9.4
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
91
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
Llys y Grug, Bontnewydd
Date
15 Sep 2016
Current
Potential
21
43
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
15 Sep 2016
21
43
Total Floor Area
141 sq m
Current CO2 Emissions Level
8.1
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
57
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
1
Address
Maes Y Coed, Bontnewydd
Date
3 Oct 2023
Current
Potential
57
68
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
3 Oct 2023
57
68
Total Floor Area
173 sq m
Current CO2 Emissions Level
8.3
Potential CO2 Emissions Level
6.4
CO2 per sq m per Year
48
Mains Gas Available
No
Habitable Rooms
7
Number of Extensions
1
Address
Padog, Bontnewydd
Date
4 Mar 2020
Current
Potential
84
98
Property Type
House
Built Form
Detached
Constructed
N/A
+
Certificate History
4 Mar 2020
84
98
21 Mar 2019
70
90
Total Floor Area
182 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
0.0
CO2 per sq m per Year
12
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Tyddyn Berth, Bontnewydd
Date
20 Nov 2014
Current
Potential
28
80
Property Type
House
Built Form
Detached
Constructed
before 1900
+
Certificate History
20 Nov 2014
28
80
26 Apr 2012
1
39
Total Floor Area
101 sq m
Current CO2 Emissions Level
7.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
69
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
0
Address
Y Gorlan, Bontnewydd
Date
28 Sep 2022
Current
Potential
44
71
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Sep 2022
44
71
Total Floor Area
123 sq m
Current CO2 Emissions Level
8.3
Potential CO2 Emissions Level
4.7
CO2 per sq m per Year
68
Mains Gas Available
No
Habitable Rooms
7
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.