PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Knowles Avenue, RHYL, LL18 3TU

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 Knowles Avenue, LL18 3TU 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 Knowles Avenue, RHYL, LL18 3TU
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 KNOWLES AVENUE
Date
1 Jul 2021
Current
Potential
73
86
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
1 Jul 2021
73
86
Total Floor Area
76 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
1 Knowles Avenue
Date
6 Jun 2016
Current
Potential
42
86
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
6 Jun 2016
42
86
Total Floor Area
48 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
93
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
1 KNOWLES AVENUE, RHYL
Date
8 Mar 2021
Current
Potential
54
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
8 Mar 2021
54
85
Total Floor Area
76 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
10 Knowles Avenue
Date
18 Aug 2020
Current
Potential
61
89
Property Type
Bungalow
Built Form
Detached
Constructed
1900-1929
+
Certificate History
18 Aug 2020
61
89
23 Mar 2009
64
73
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
11 Knowles Avenue
Date
2 Aug 2021
Current
Potential
67
87
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
2 Aug 2021
67
87
29 Mar 2019
52
85
Total Floor Area
63 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
11 KNOWLES AVENUE, RHYL
Date
25 Mar 2021
Current
Potential
52
84
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
25 Mar 2021
52
84
Total Floor Area
63 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
12 Knowles Avenue
Date
2 Mar 2012
Current
Potential
58
60
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
2 Mar 2012
58
60
Total Floor Area
55 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
12 KNOWLES AVENUE, RHYL
Date
5 Mar 2021
Current
Potential
54
86
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
5 Mar 2021
54
86
Total Floor Area
56 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
14 KNOWLES AVENUE, RHYL
Date
15 Dec 2020
Current
Potential
64
87
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
15 Dec 2020
64
87
Total Floor Area
62 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
15 Knowles Avenue
Date
22 Jul 2024
Current
Potential
55
85
Property Type
Bungalow
Built Form
Detached
Constructed
1900-1929
+
Certificate History
22 Jul 2024
55
85
Total Floor Area
57 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
16 Knowles Avenue
Date
13 Sep 2021
Current
Potential
48
79
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
13 Sep 2021
48
79
31 Oct 2014
51
86
Total Floor Area
853 sq m
Current CO2 Emissions Level
44.0
Potential CO2 Emissions Level
18.0
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
17 Knowles Avenue
Date
25 Mar 2015
Current
Potential
1
54
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
25 Mar 2015
1
54
Total Floor Area
56 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
202
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
1
Address
18 Knowles Avenue
Date
1 Sep 2014
Current
Potential
56
87
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
1 Sep 2014
56
87
Total Floor Area
47 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
19 Knowles Avenue
Date
27 Feb 2019
Current
Potential
59
83
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
27 Feb 2019
59
83
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
20 Knowles Avenue
Date
11 Jul 2022
Current
Potential
45
68
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
11 Jul 2022
45
68
4 Dec 2009
54
64
Total Floor Area
95 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
21 Knowles Avenue
Date
17 Dec 2021
Current
Potential
77
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
17 Dec 2021
77
85
22 Sep 2021
54
80
14 Jul 2010
66
68
Total Floor Area
70 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
22 Knowles Avenue
Date
11 Sep 2014
Current
Potential
52
75
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
11 Sep 2014
52
75
Total Floor Area
85 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
23 Knowles Avenue
Date
12 Oct 2021
Current
Potential
67
82
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
12 Oct 2021
67
82
Total Floor Area
48 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
24 Knowles Avenue
Date
18 Nov 2016
Current
Potential
35
83
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
18 Nov 2016
35
83
Total Floor Area
71 sq m
Current CO2 Emissions Level
6.2
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
87
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
25 KNOWLES AVENUE
Date
29 Jun 2021
Current
Potential
66
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
29 Jun 2021
66
85
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
25 Knowles Avenue
Date
17 Sep 2014
Current
Potential
61
80
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
17 Sep 2014
61
80
Total Floor Area
74 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
26 Knowles Avenue
Date
21 Oct 2021
Current
Potential
73
88
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
21 Oct 2021
73
88
13 Feb 2013
57
85
Total Floor Area
57 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
26 KNOWLES AVENUE, RHYL
Date
8 Mar 2021
Current
Potential
46
73
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
8 Mar 2021
46
73
Total Floor Area
53 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
74
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
27 KNOWLES AVENUE
Date
15 Jun 2021
Current
Potential
57
83
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
15 Jun 2021
57
83
Total Floor Area
70 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
27 Knowles Avenue
Date
3 Apr 2013
Current
Potential
42
73
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
3 Apr 2013
42
73
Total Floor Area
65 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
85
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
28 Knowles Avenue
Date
16 Nov 2021
Current
Potential
76
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
16 Nov 2021
76
85
14 Aug 2015
54
83
Total Floor Area
73 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
28 KNOWLES AVENUE, RHYL
Date
11 Mar 2021
Current
Potential
64
83
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
11 Mar 2021
64
83
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
29 Knowles Avenue
Date
21 Oct 2021
Current
Potential
72
81
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
21 Oct 2021
72
81
26 May 2010
60
73
Total Floor Area
78 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
29 KNOWLES AVENUE, RHYL
Date
12 Mar 2021
Current
Potential
55
76
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
12 Mar 2021
55
76
Total Floor Area
75 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
3 Knowles Avenue
Date
27 Feb 2015
Current
Potential
55
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
27 Feb 2015
55
85
Total Floor Area
56 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
30 Knowles Avenue
Date
8 Apr 2015
Current
Potential
58
63
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
8 Apr 2015
58
63
14 Dec 2012
69
80
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
31 Knowles Avenue
Date
9 Sep 2021
Current
Potential
67
84
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
9 Sep 2021
67
84
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
32 Knowles Avenue
Date
20 Oct 2022
Current
Potential
52
84
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
20 Oct 2022
52
84
Total Floor Area
64 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
61
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
2
Address
33 Knowles Avenue
Date
21 Nov 2023
Current
Potential
49
69
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
21 Nov 2023
49
69
27 Nov 2008
39
62
Total Floor Area
70 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
34 Knowles Avenue
Date
8 Dec 2022
Current
Potential
69
87
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
8 Dec 2022
69
87
Total Floor Area
77 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
34 KNOWLES AVENUE, RHYL
Date
13 Mar 2021
Current
Potential
65
87
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
13 Mar 2021
65
87
Total Floor Area
75 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
35 Knowles Avenue
Date
28 Sep 2021
Current
Potential
68
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
28 Sep 2021
68
85
6 Jun 2017
47
82
Total Floor Area
70 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
35 KNOWLES AVENUE, RHYL
Date
22 Mar 2021
Current
Potential
52
84
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
22 Mar 2021
52
84
Total Floor Area
70 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
4 Knowles Avenue
Date
15 Jul 2013
Current
Potential
59
87
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
15 Jul 2013
59
87
Total Floor Area
66 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
4 KNOWLES AVENUE, RHYL
Date
17 Mar 2021
Current
Potential
67
85
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
17 Mar 2021
67
85
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
5 Knowles Avenue
Date
2 Jul 2019
Current
Potential
65
85
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
2 Jul 2019
65
85
11 Jan 2017
33
88
11 Jan 2017
33
87
20 Jun 2016
47
86
Total Floor Area
49 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
6 Knowles Avenue
Date
11 Nov 2008
Current
Potential
52
58
Property Type
Bungalow
Built Form
Detached
Constructed
1930-1949
+
Certificate History
11 Nov 2008
52
58
Total Floor Area
85 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
6.3
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
7 Knowles Avenue
Date
5 Mar 2015
Current
Potential
55
85
Property Type
Bungalow
Built Form
Detached
Constructed
1900-1929
+
Certificate History
5 Mar 2015
55
85
20 Jan 2012
32
66
Total Floor Area
51 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
8 Knowles Avenue
Date
14 Jun 2016
Current
Potential
59
84
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
14 Jun 2016
59
84
3 Feb 2014
44
88
Total Floor Area
65 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
9 Knowles Avenue
Date
17 Jun 2016
Current
Potential
29
80
Property Type
Bungalow
Built Form
Detached
Constructed
1900-1929
+
Certificate History
17 Jun 2016
29
80
Total Floor Area
60 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
114
Mains Gas Available
Yes
Habitable Rooms
3
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.