PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Southgate Street, WINCHESTER, SO23 9DT
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 Southgate Street, SO23 9DT 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 Southgate Street, WINCHESTER, SO23 9DT
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
Flat 1, Black Swan Buildings
Date
9 Mar 2023
Current
Potential
62
81
Property Type
Flat
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
9 Mar 2023
62
81
9 Mar 2023
73
83
Total Floor Area
53 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
84
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
Flat 1 Black Swan Buildings, Southgate Street
Date
2 May 2012
Current
Potential
76
82
Property Type
Flat
Built Form
Semi-Detached
Constructed
1996-2002
Certificate History
2 May 2012
76
82
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
45
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
Flat 10, Black Swan Buildings
Date
12 Dec 2022
Current
Potential
47
60
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
12 Dec 2022
47
60
12 Dec 2022
47
60
Total Floor Area
44 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
120
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 10 Black Swan Buildings, Southgate Street
Date
1 Jun 2011
Current
Potential
43
44
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
1 Jun 2011
43
44
1 Jun 2011
29
31
Total Floor Area
43 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
105
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 11, Black Swan Buildings
Date
27 Oct 2021
Current
Potential
32
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
27 Oct 2021
32
80
Total Floor Area
38 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
95
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 11 Black Swan Buildings, Southgate Street
Date
23 Dec 2010
Current
Potential
19
49
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
23 Dec 2010
19
49
Total Floor Area
43 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
96
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 12, Black Swan Buildings
Date
27 Oct 2021
Current
Potential
16
75
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
27 Oct 2021
16
75
Total Floor Area
55 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
109
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 12 Black Swan Buildings, Southgate Street
Date
5 Jul 2009
Current
Potential
22
50
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
5 Jul 2009
22
50
Total Floor Area
44 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
91
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 13, Black Swan Buildings
Date
8 Mar 2023
Current
Potential
57
60
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Mar 2023
57
60
27 Oct 2021
16
81
27 Oct 2021
16
75
Total Floor Area
47 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
102
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 13 Black Swan Buildings, Southgate Street
Date
28 May 2009
Current
Potential
13
40
Property Type
Flat
Built Form
Enclosed End-Terrace
Constructed
1900-1929
Certificate History
28 May 2009
13
40
Total Floor Area
55 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
6.0
CO2 per sq m per Year
96
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 15, Black Swan Buildings
Date
21 Aug 2024
Current
Potential
34
74
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
21 Aug 2024
34
74
28 Oct 2021
32
80
Total Floor Area
39 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
110
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
1
Address
Flat 15 Black Swan Buildings, Southgate Street
Date
1 Feb 2017
Current
Potential
23
73
Property Type
Flat
Built Form
Mid-Terrace
Constructed
before 1900
Certificate History
1 Feb 2017
23
73
Total Floor Area
39 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
112
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 2 Black Swan Buildings, Southgate Street
Date
22 Aug 2013
Current
Potential
52
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
22 Aug 2013
52
76
9 Jun 2010
48
72
Total Floor Area
42 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
62
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3, Black Swan Buildings
Date
7 Mar 2023
Current
Potential
67
85
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
7 Mar 2023
67
85
Total Floor Area
45 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
69
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 3 Black Swan Buildings, Southgate Street
Date
27 Feb 2015
Current
Potential
73
84
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
27 Feb 2015
73
84
Total Floor Area
41 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
35
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 4 Black Swan Buildings, Southgate Street
Date
24 May 2017
Current
Potential
63
75
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
24 May 2017
63
75
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
59
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 5, Black Swan Buildings
Date
8 Mar 2023
Current
Potential
56
84
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Mar 2023
56
84
13 Oct 2021
34
70
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
61
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 6 Black Swan Buildings, Southgate Street
Date
9 Jun 2011
Current
Potential
76
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1900-1929
Certificate History
9 Jun 2011
76
78
9 Jun 2011
76
78
Total Floor Area
53 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat 7, Black Swan Buildings
Date
8 Mar 2023
Current
Potential
67
85
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
8 Mar 2023
67
85
Total Floor Area
28 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
70
Mains Gas Available
No
Habitable Rooms
1
Number of Extensions
0
Address
Flat 7 Black Swan Buildings, Southgate Street
Date
5 Sep 2013
Current
Potential
44
75
Property Type
Flat
Built Form
End-Terrace
Constructed
1900-1929
Certificate History
5 Sep 2013
44
75
25 Jul 2012
41
66
Total Floor Area
27 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
95
Mains Gas Available
No
Habitable Rooms
1
Number of Extensions
0
Address
Flat 8 Black Swan Buildings, Southgate Street
Date
17 Jul 2013
Current
Potential
45
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
17 Jul 2013
45
76
27 Nov 2009
12
50
Total Floor Area
32 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
111
Mains Gas Available
No
Habitable Rooms
1
Number of Extensions
0
Address
Flat 9, Black Swan Buildings
Date
21 Aug 2024
Current
Potential
29
81
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
21 Aug 2024
29
81
Total Floor Area
42 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
97
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
Flat 9 Black Swan Buildings, Southgate Street
Date
8 Dec 2016
Current
Potential
71
80
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1996-2002
Certificate History
8 Dec 2016
71
80
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
45
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
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.