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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Trelawney Avenue, SLOUGH, SL3 7TU

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 7TU 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 7TU
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
385 Trelawney Avenue
Date
10 May 2011
Current
Potential
70
70
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
10 May 2011
70
70
Total Floor Area
68 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
391 Trelawney Avenue
Date
1 Jul 2018
Current
Potential
63
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
1 Jul 2018
63
87
Total Floor Area
67 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
399 Trelawney Avenue
Date
21 Aug 2013
Current
Potential
63
68
Property Type
Flat
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
21 Aug 2013
63
68
Total Floor Area
47 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
67
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
401 Trelawney Avenue
Date
10 Feb 2020
Current
Potential
68
73
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
10 Feb 2020
68
73
Total Floor Area
46 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
46
Mains Gas Available
No
Habitable Rooms
2
Number of Extensions
0
Address
405 Trelawney Avenue
Date
24 Jun 2023
Current
Potential
74
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
24 Jun 2023
74
76
Total Floor Area
47 sq m
Current CO2 Emissions Level
1.7
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
407 Trelawney Avenue
Date
31 May 2013
Current
Potential
68
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
31 May 2013
68
80
Total Floor Area
119 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
409 Trelawney Avenue
Date
22 Apr 2020
Current
Potential
72
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
22 Apr 2020
72
87
14 Sep 2017
39
85
Total Floor Area
67 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
413 TRELAWNEY AVENUE, SLOUGH
Date
3 Nov 2020
Current
Potential
63
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
3 Nov 2020
63
80
Total Floor Area
68 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
421 Trelawney Avenue
Date
8 Jun 2017
Current
Potential
62
88
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
8 Jun 2017
62
88
Total Floor Area
73 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
0.8
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
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.