PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
William Street, HELENSBURGH, G84 8BD
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 William Street, G84 8BD 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 William Street, HELENSBURGH, G84 8BD
Period Covered:
2012 - 30 September 2023
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 WILLIAM STREET
Date
28 Jan 2022
Current
Potential
66
75
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
28 Jan 2022
66
75
Total Floor Area
127 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
45
Mains Gas Available
No
Habitable Rooms
6
Number of Extensions
1
Address
14 WILLIAM STREET
Date
6 Sep 2021
Current
Potential
63
76
Property Type
Flat
Built Form
Detached
Constructed
before 1919
Certificate History
6 Sep 2021
63
76
5 Sep 2021
63
76
4 Sep 2021
63
76
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
56
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
15 WILLIAM STREET
Date
29 Sep 2019
Current
Potential
61
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1919
Certificate History
29 Sep 2019
61
73
30 Sep 2019
61
73
28 Sep 2019
61
73
Total Floor Area
82 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
59
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
2
Address
3 WILLIAM STREET
Date
8 Mar 2016
Current
Potential
63
78
Property Type
Flat
Built Form
Detached
Constructed
before 1919
Certificate History
8 Mar 2016
63
78
Total Floor Area
110 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
50
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
4 WILLIAM STREET
Date
14 Jul 2014
Current
Potential
52
69
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
14 Jul 2014
52
69
15 Jul 2014
52
69
13 Jul 2014
52
69
Total Floor Area
82 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
5 WILLIAM STREET
Date
18 Oct 2022
Current
Potential
64
79
Property Type
House
Built Form
End-Terrace
Constructed
before 1919
Certificate History
18 Oct 2022
64
79
19 Oct 2022
64
79
17 Oct 2022
64
79
Total Floor Area
146 sq m
Current CO2 Emissions Level
7.5
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
51
Mains Gas Available
No
Habitable Rooms
7
Number of Extensions
3
Address
8 WILLIAM STREET
Date
13 Jul 2023
Current
Potential
69
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
13 Jul 2023
69
78
14 Jul 2023
69
78
6 Sep 2022
31
70
Total Floor Area
86 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
44
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
9 WILLIAM STREET
Date
2 Jun 2019
Current
Potential
53
72
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
2 Jun 2019
53
72
3 Jun 2019
53
72
1 Jun 2019
53
72
Total Floor Area
232 sq m
Current CO2 Emissions Level
17.0
Potential CO2 Emissions Level
7.3
CO2 per sq m per Year
71
Mains Gas Available
No
Habitable Rooms
9
Number of Extensions
2
Address
FLAT 1 , CLYDE VIEW
Date
9 Feb 2012
Current
Potential
78
80
Property Type
N/A
Built Form
N/A
Constructed
N/A
Certificate History
9 Feb 2012
78
80
Total Floor Area
63 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 1/1 , 12 WILLIAM STREET
Date
25 Mar 2012
Current
Potential
69
70
Property Type
N/A
Built Form
N/A
Constructed
N/A
Certificate History
25 Mar 2012
69
70
Total Floor Area
64 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
0.1
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 1/1 , 13 WILLIAM STREET
Date
29 May 2023
Current
Potential
72
80
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1919
Certificate History
29 May 2023
72
80
30 May 2023
72
80
19 Oct 2013
65
78
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
40
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
0
Address
FLAT 1/1 , 6 WILLIAM STREET
Date
12 Jun 2023
Current
Potential
68
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
12 Jun 2023
68
80
13 Jun 2023
68
80
Total Floor Area
97 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
41
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
FLAT 1/2 , 12 WILLIAM STREET
Date
19 Sep 2013
Current
Potential
58
78
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1919
Certificate History
19 Sep 2013
58
78
18 Sep 2013
58
78
17 Sep 2013
58
78
Total Floor Area
79 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 1/2 , 6 WILLIAM STREET
Date
9 Mar 2021
Current
Potential
72
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
9 Mar 2021
72
80
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
37
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 2 , CLYDE VIEW
Date
9 Feb 2012
Current
Potential
76
78
Property Type
N/A
Built Form
N/A
Constructed
N/A
Certificate History
9 Feb 2012
76
78
17 Sep 2024
82
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.1
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 2/1 , 12 WILLIAM STREET
Date
10 Jul 2022
Current
Potential
67
74
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
10 Jul 2022
67
74
11 Jul 2022
67
74
9 Jul 2022
67
74
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
50
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 2/1 , 13 WILLIAM STREET
Date
15 Mar 2022
Current
Potential
66
69
Property Type
Flat
Built Form
Detached
Constructed
before 1919
Certificate History
15 Mar 2022
66
69
Total Floor Area
53 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
55
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 2/1 , 6 WILLIAM STREET
Date
24 Sep 2013
Current
Potential
51
78
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
24 Sep 2013
51
78
23 Sep 2013
51
78
22 Sep 2013
51
78
Total Floor Area
149 sq m
Current CO2 Emissions Level
8.6
Potential CO2 Emissions Level
5.2
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
FLAT 2/2 , 12 WILLIAM STREET
Date
1 Dec 2022
Current
Potential
68
77
Property Type
Flat
Built Form
Semi-Detached
Constructed
before 1919
Certificate History
1 Dec 2022
68
77
9 Jun 2012
58
59
Total Floor Area
82 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
46
Mains Gas Available
No
Habitable Rooms
4
Number of Extensions
0
Address
FLAT 2/2 , 6 WILLIAM STREET
Date
12 Jun 2019
Current
Potential
61
65
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1919
Certificate History
12 Jun 2019
61
65
11 Jun 2019
61
65
10 Jun 2019
61
65
Total Floor Area
78 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
0.5
CO2 per sq m per Year
58
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 3 , CLYDE VIEW
Date
9 Feb 2012
Current
Potential
81
83
Property Type
N/A
Built Form
N/A
Constructed
N/A
Certificate History
9 Feb 2012
81
83
Total Floor Area
86 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
17
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT 4 , CLYDE VIEW
Date
9 Feb 2012
Current
Potential
80
82
Property Type
N/A
Built Form
N/A
Constructed
N/A
Certificate History
9 Feb 2012
80
82
26 Mar 2024
82
82
Total Floor Area
86 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
0.2
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
FLAT GROUND/1 , 7 WILLIAM STREET
Date
26 Jun 2023
Current
Potential
67
76
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1919
Certificate History
26 Jun 2023
67
76
27 Jun 2023
67
76
28 Jun 2022
64
75
Total Floor Area
58 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
54
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
1
Bands
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.