PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Allaway Avenue, PORTSMOUTH, PO6 4HG
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 Allaway Avenue, PO6 4HG 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 Allaway Avenue, PORTSMOUTH, PO6 4HG
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
183 Allaway Avenue
Date
29 Mar 2022
Current
Potential
71
74
Property Type
Maisonette
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
29 Mar 2022
71
74
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
185 Allaway Avenue
Date
11 Jan 2015
Current
Potential
74
77
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
11 Jan 2015
74
77
16 Dec 2014
60
79
3 Apr 2011
77
82
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
187 Allaway Avenue
Date
25 Jan 2011
Current
Potential
36
42
Property Type
Maisonette
Built Form
Detached
Constructed
1950-1966
Certificate History
25 Jan 2011
36
42
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
189 Allaway Avenue
Date
5 Feb 2014
Current
Potential
59
76
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
5 Feb 2014
59
76
Total Floor Area
82 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
193 Allaway Avenue
Date
7 Feb 2024
Current
Potential
76
76
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
7 Feb 2024
76
76
19 Oct 2015
70
74
13 Jan 2015
54
81
Total Floor Area
83 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
203 Allaway Avenue
Date
8 Jan 2015
Current
Potential
63
82
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
8 Jan 2015
63
82
11 Jun 2013
66
76
8 Oct 2009
63
78
Total Floor Area
128 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
203 ALLAWAY AVENUE, PORTSMOUTH
Date
14 Apr 2021
Current
Potential
74
79
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
14 Apr 2021
74
79
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
205 Allaway Avenue
Date
10 Feb 2014
Current
Potential
70
78
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
10 Feb 2014
70
78
26 Jul 2011
73
76
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
209 Allaway Avenue
Date
30 Aug 2023
Current
Potential
44
44
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
30 Aug 2023
44
44
12 May 2013
45
73
5 Aug 2009
38
52
Total Floor Area
89 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
39
Mains Gas Available
No
Habitable Rooms
5
Number of Extensions
1
Address
211 Allaway Avenue
Date
9 Jan 2014
Current
Potential
72
77
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
9 Jan 2014
72
77
Total Floor Area
85 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
213 Allaway Avenue
Date
4 Dec 2024
Current
Potential
67
71
Property Type
Maisonette
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
4 Dec 2024
67
71
4 Feb 2014
69
75
Total Floor Area
74 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
223 Allaway Avenue
Date
6 Jul 2022
Current
Potential
75
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
6 Jul 2022
75
79
Total Floor Area
75 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
237 Allaway Avenue
Date
8 Nov 2022
Current
Potential
69
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
69
73
23 Mar 2012
72
72
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
239 Allaway Avenue
Date
8 Nov 2022
Current
Potential
70
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
70
74
23 Sep 2012
72
76
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
241 Allaway Avenue
Date
7 Nov 2022
Current
Potential
69
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
69
72
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
243 Allaway Avenue
Date
23 Nov 2022
Current
Potential
73
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
23 Nov 2022
73
76
17 Jan 2012
73
73
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
245 Allaway Avenue
Date
15 Nov 2022
Current
Potential
75
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
15 Nov 2022
75
76
Total Floor Area
56 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
247 Allaway Avenue
Date
30 May 2024
Current
Potential
63
63
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
30 May 2024
63
63
11 Dec 2008
65
72
Total Floor Area
43 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
251 Allaway Avenue
Date
8 Nov 2022
Current
Potential
73
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
73
75
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
253 Allaway Avenue
Date
24 Jan 2023
Current
Potential
74
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
24 Jan 2023
74
76
29 Dec 2008
74
77
Total Floor Area
39 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
255 Allaway Avenue
Date
7 Nov 2022
Current
Potential
71
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
71
74
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
257 Allaway Avenue
Date
21 Dec 2023
Current
Potential
74
77
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
21 Dec 2023
74
77
22 Jun 2011
73
74
Total Floor Area
40 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
259 Allaway Avenue
Date
8 Nov 2022
Current
Potential
69
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
69
72
17 May 2012
71
74
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
261 Allaway Avenue
Date
7 Nov 2022
Current
Potential
72
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
72
74
3 May 2017
74
75
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
263 Allaway Avenue
Date
2 Dec 2015
Current
Potential
73
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
2 Dec 2015
73
74
Total Floor Area
46 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
265 Allaway Avenue
Date
8 Nov 2022
Current
Potential
74
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
74
75
3 Jun 2019
62
67
26 Mar 2009
82
82
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
267 Allaway Avenue
Date
9 Apr 2013
Current
Potential
76
77
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
9 Apr 2013
76
77
Total Floor Area
32 sq m
Current CO2 Emissions Level
1.0
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
269 Allaway Avenue
Date
7 Nov 2022
Current
Potential
67
71
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
67
71
7 Mar 2018
69
75
7 Mar 2018
69
75
28 Jan 2011
74
78
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
271 Allaway Avenue
Date
7 Nov 2022
Current
Potential
71
74
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
71
74
7 Aug 2012
68
74
Total Floor Area
42 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
273 Allaway Avenue
Date
14 Jul 2010
Current
Potential
77
80
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
14 Jul 2010
77
80
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
275 Allaway Avenue
Date
7 Nov 2022
Current
Potential
49
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
49
75
Total Floor Area
35 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
277 Allaway Avenue
Date
8 Nov 2022
Current
Potential
70
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
70
72
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
279 Allaway Avenue
Date
7 Nov 2022
Current
Potential
69
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
7 Nov 2022
69
72
19 Mar 2015
70
72
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
281 Allaway Avenue
Date
31 Jul 2024
Current
Potential
66
66
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
31 Jul 2024
66
66
Total Floor Area
33 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
283 Allaway Avenue
Date
8 Nov 2022
Current
Potential
74
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
74
75
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
1
Number of Extensions
0
Address
285 Allaway Avenue
Date
24 Jan 2023
Current
Potential
73
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
24 Jan 2023
73
76
6 Feb 2013
70
74
6 Feb 2013
71
75
Total Floor Area
39 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
287 Allaway Avenue
Date
23 Jan 2009
Current
Potential
73
73
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
23 Jan 2009
73
73
Total Floor Area
48 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
289 Allaway Avenue
Date
8 May 2024
Current
Potential
71
75
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
8 May 2024
71
75
15 Jan 2009
75
77
Total Floor Area
43 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
291 Allaway Avenue
Date
10 Jan 2015
Current
Potential
74
75
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
10 Jan 2015
74
75
20 Dec 2014
56
78
21 Jan 2011
78
81
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
293 Allaway Avenue
Date
8 Nov 2022
Current
Potential
68
72
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
8 Nov 2022
68
72
13 Jun 2011
73
76
Total Floor Area
45 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
295 Allaway Avenue
Date
19 Oct 2015
Current
Potential
64
73
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
19 Oct 2015
64
73
9 Jan 2015
44
75
24 Jan 2012
72
74
Total Floor Area
45 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
47
Mains Gas Available
Yes
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.