PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Blythway, WELWYN GARDEN CITY, AL7 1DL

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 Blythway, AL7 1DL 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 Blythway, WELWYN GARDEN CITY, AL7 1DL
Period Covered: 2008 - 31 October 2024

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
107 Blythway
Date
29 Mar 2022
Current
Potential
61
81
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
29 Mar 2022
61
81
Total Floor Area
99 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
109 Blythway
Date
4 Jun 2023
Current
Potential
64
82
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
4 Jun 2023
64
82
Total Floor Area
65 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
111 Blythway
Date
20 Jan 2010
Current
Potential
77
80
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
20 Jan 2010
77
80
Total Floor Area
36 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
113 Blythway
Date
18 Nov 2014
Current
Potential
65
71
Property Type
Flat
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
18 Nov 2014
65
71
Total Floor Area
90 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
117 Blythway
Date
31 May 2015
Current
Potential
56
75
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
31 May 2015
56
75
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
39 Blythway
Date
15 Mar 2019
Current
Potential
15
70
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
15 Mar 2019
15
70
Total Floor Area
53 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
195
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
41 Blythway
Date
10 Dec 2021
Current
Potential
62
77
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
10 Dec 2021
62
77
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
45 Blythway
Date
10 Apr 2018
Current
Potential
64
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
10 Apr 2018
64
85
10 Apr 2018
66
84
Total Floor Area
105 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
49 Blythway
Date
27 Nov 2014
Current
Potential
49
74
Property Type
Bungalow
Built Form
Detached
Constructed
1950-1966
+
Certificate History
27 Nov 2014
49
74
27 Nov 2014
60
84
10 Dec 2012
46
70
Total Floor Area
54 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
73
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
57 Blythway
Date
2 Mar 2017
Current
Potential
43
79
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
2 Mar 2017
43
79
Total Floor Area
72 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
82
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
63 Blythway
Date
11 Jun 2018
Current
Potential
63
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
11 Jun 2018
63
85
Total Floor Area
84 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
73 Blythway
Date
13 Feb 2024
Current
Potential
72
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
13 Feb 2024
72
88
Total Floor Area
86 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
77 Blythway
Date
2 Nov 2016
Current
Potential
59
83
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
2 Nov 2016
59
83
Total Floor Area
71 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
81 Blythway
Date
15 Sep 2022
Current
Potential
52
82
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
15 Sep 2022
52
82
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
89 Blythway
Date
27 Jan 2009
Current
Potential
44
50
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
27 Jan 2009
44
50
Total Floor Area
45 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
101
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
95 Blythway
Date
8 Feb 2012
Current
Potential
59
67
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
8 Feb 2012
59
67
Total Floor Area
85 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
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.