PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Trelawney Avenue, SLOUGH, SL3 7UF
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 Trelawney Avenue, SL3 7UF 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 Trelawney Avenue, SLOUGH, SL3 7UF
Period Covered:
2008 - 31 October 2024
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
247 Trelawney Avenue
Date
11 Mar 2022
Current
Potential
69
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
11 Mar 2022
69
86
11 Aug 2021
24
88
Total Floor Area
75 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
249 Trelawney Avenue
Date
28 Jun 2019
Current
Potential
67
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
28 Jun 2019
67
88
Total Floor Area
71 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
251 Trelawney Avenue
Date
21 Dec 2015
Current
Potential
65
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
Certificate History
21 Dec 2015
65
80
Total Floor Area
76 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
253 Trelawney Avenue
Date
4 Feb 2022
Current
Potential
66
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
4 Feb 2022
66
82
30 Jan 2012
61
71
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
255 Trelawney Avenue
Date
16 Jan 2019
Current
Potential
39
90
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
16 Jan 2019
39
90
24 Jul 2012
47
89
Total Floor Area
70 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
259 Trelawney Avenue
Date
16 Jul 2014
Current
Potential
59
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
16 Jul 2014
59
89
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
0.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
261 Trelawney Avenue
Date
22 May 2024
Current
Potential
74
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
22 May 2024
74
86
Total Floor Area
72 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
263 TRELAWNEY AVENUE
Date
14 Sep 2020
Current
Potential
64
82
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
14 Sep 2020
64
82
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
263 Trelawney Avenue
Date
13 Oct 2010
Current
Potential
69
72
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
13 Oct 2010
69
72
Total Floor Area
87 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
265 Trelawney Avenue
Date
12 Oct 2024
Current
Potential
70
73
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
12 Oct 2024
70
73
18 Jan 2011
81
81
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
267 Trelawney Avenue
Date
5 Jan 2024
Current
Potential
73
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
5 Jan 2024
73
77
5 Jul 2009
72
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
269 Trelawney Avenue
Date
1 Mar 2013
Current
Potential
74
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
1 Mar 2013
74
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
273 Trelawney Avenue
Date
28 Dec 2011
Current
Potential
76
76
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
28 Dec 2011
76
76
Total Floor Area
49 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
275 Trelawney Avenue
Date
12 Sep 2010
Current
Potential
85
85
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
12 Sep 2010
85
85
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
277 Trelawney Avenue
Date
3 May 2009
Current
Potential
74
85
Property Type
Flat
Built Form
N/A
Constructed
1950-1966
Certificate History
3 May 2009
74
85
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
279 Trelawney Avenue
Date
21 May 2013
Current
Potential
75
77
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
21 May 2013
75
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
281 Trelawney Avenue
Date
11 May 2023
Current
Potential
58
63
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
11 May 2023
58
63
16 Jun 2009
42
65
Total Floor Area
52 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
287 Trelawney Avenue
Date
6 May 2024
Current
Potential
63
63
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
6 May 2024
63
63
21 Jul 2009
57
62
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
289 Trelawney Avenue
Date
15 Jun 2012
Current
Potential
71
74
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
15 Jun 2012
71
74
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.8
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
291 Trelawney Avenue
Date
29 Nov 2018
Current
Potential
75
76
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
29 Nov 2018
75
76
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
295 Trelawney Avenue
Date
20 Feb 2010
Current
Potential
57
77
Property Type
Flat
Built Form
Detached
Constructed
1950-1966
Certificate History
20 Feb 2010
57
77
Total Floor Area
47 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
73
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
297 Trelawney Avenue
Date
9 Jan 2019
Current
Potential
72
77
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
Certificate History
9 Jan 2019
72
77
1 Oct 2008
73
83
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
299 Trelawney Avenue
Date
15 Jun 2024
Current
Potential
79
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
15 Jun 2024
79
79
14 Feb 2012
79
80
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
301 Trelawney Avenue
Date
17 Jun 2024
Current
Potential
79
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
17 Jun 2024
79
79
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.1
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
303 TRELAWNEY AVENUE, SLOUGH
Date
25 Nov 2020
Current
Potential
77
77
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
25 Nov 2020
77
77
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
305 Trelawney Avenue
Date
16 Feb 2015
Current
Potential
62
63
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
16 Feb 2015
62
63
Total Floor Area
48 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
307 Trelawney Avenue
Date
27 Nov 2018
Current
Potential
60
62
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
27 Nov 2018
60
62
11 Oct 2008
54
59
Total Floor Area
44 sq m
Current CO2 Emissions Level
2.7
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
60
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
309 Trelawney Avenue
Date
1 Jul 2024
Current
Potential
65
65
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
1 Jul 2024
65
65
15 Jan 2010
66
69
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.3
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
311 Trelawney Avenue
Date
14 Oct 2018
Current
Potential
62
63
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
14 Oct 2018
62
63
Total Floor Area
47 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
313 Trelawney Avenue
Date
23 Sep 2009
Current
Potential
68
73
Property Type
Bungalow
Built Form
End-Terrace
Constructed
1950-1966
Certificate History
23 Sep 2009
68
73
Total Floor Area
35 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
63
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
317 Trelawney Avenue
Date
20 Jan 2014
Current
Potential
65
90
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
20 Jan 2014
65
90
Total Floor Area
35 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
0.3
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
321 Trelawney Avenue
Date
3 Nov 2010
Current
Potential
78
78
Property Type
Bungalow
Built Form
Mid-Terrace
Constructed
1950-1966
Certificate History
3 Nov 2010
78
78
Total Floor Area
34 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
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.