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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Willian Way, LETCHWORTH GARDEN CITY, SG6 2HQ

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 Willian Way, SG6 2HQ 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 Willian Way, LETCHWORTH GARDEN CITY, SG6 2HQ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Willian Way
Date
31 Aug 2023
Current
Potential
50
77
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
31 Aug 2023
50
77
Total Floor Area
141 sq m
Current CO2 Emissions Level
8.2
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
15 Willian Way
Date
14 Aug 2016
Current
Potential
49
70
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
14 Aug 2016
49
70
14 Aug 2016
52
76
Total Floor Area
221 sq m
Current CO2 Emissions Level
14.0
Potential CO2 Emissions Level
8.5
CO2 per sq m per Year
65
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
0
Address
17 Willian Way
Date
14 Sep 2009
Current
Potential
36
60
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
14 Sep 2009
36
60
Total Floor Area
158 sq m
Current CO2 Emissions Level
13.0
Potential CO2 Emissions Level
7.6
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
19 Willian Way
Date
31 Aug 2009
Current
Potential
42
51
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
31 Aug 2009
42
51
Total Floor Area
128 sq m
Current CO2 Emissions Level
9.7
Potential CO2 Emissions Level
8.1
CO2 per sq m per Year
76
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
23 Willian Way
Date
17 Jul 2018
Current
Potential
53
75
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
17 Jul 2018
53
75
Total Floor Area
131 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
25 Willian Way
Date
15 May 2017
Current
Potential
58
68
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
15 May 2017
58
68
Total Floor Area
229 sq m
Current CO2 Emissions Level
9.0
Potential CO2 Emissions Level
6.9
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
29 Willian Way
Date
17 Jul 2020
Current
Potential
72
78
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
17 Jul 2020
72
78
26 Aug 2010
39
60
Total Floor Area
221 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
4.4
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
31 Willian Way
Date
15 Jan 2019
Current
Potential
43
84
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
15 Jan 2019
43
84
Total Floor Area
146 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
68
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
33 Willian Way
Date
14 Jun 2020
Current
Potential
50
84
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
14 Jun 2020
50
84
Total Floor Area
163 sq m
Current CO2 Emissions Level
9.5
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
8
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.