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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Portman Close, ST. ALBANS, AL4 9TW

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 Portman Close, AL4 9TW 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 Portman Close, ST. ALBANS, AL4 9TW
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Portman Close
Date
17 Dec 2014
Current
Potential
64
78
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
17 Dec 2014
64
78
Total Floor Area
158 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
12 PORTMAN CLOSE
Date
7 Jun 2021
Current
Potential
63
84
Property Type
Bungalow
Built Form
Detached
Constructed
1983-1990
+
Certificate History
7 Jun 2021
63
84
Total Floor Area
73 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
13 Portman Close
Date
19 Nov 2010
Current
Potential
58
72
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
19 Nov 2010
58
72
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
2 Portman Close
Date
23 Apr 2014
Current
Potential
57
86
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
23 Apr 2014
57
86
4 Mar 2014
58
84
22 Aug 2013
61
87
Total Floor Area
101 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
20 Portman Close
Date
21 Mar 2018
Current
Potential
62
81
Property Type
House
Built Form
Detached
Constructed
1967-1975
+
Certificate History
21 Mar 2018
62
81
Total Floor Area
110 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
22 Portman Close
Date
5 Feb 2016
Current
Potential
54
84
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
5 Feb 2016
54
84
Total Floor Area
100 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
23 Portman Close
Date
1 Mar 2017
Current
Potential
60
83
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
1 Mar 2017
60
83
Total Floor Area
105 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
3 Portman Close
Date
10 Jan 2015
Current
Potential
63
77
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
10 Jan 2015
63
77
Total Floor Area
156 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
4.0
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
4 Portman Close
Date
7 Jun 2015
Current
Potential
58
80
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
7 Jun 2015
58
80
Total Floor Area
119 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
8 Portman Close
Date
14 Aug 2015
Current
Potential
68
85
Property Type
House
Built Form
Detached
Constructed
1976-1982
+
Certificate History
14 Aug 2015
68
85
Total Floor Area
102 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
9 Portman Close
Date
20 May 2024
Current
Potential
69
84
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
20 May 2024
69
84
Total Floor Area
105 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
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.