PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Napsbury Avenue, ST. ALBANS, AL2 1LS
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 Napsbury Avenue, AL2 1LS 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 Napsbury Avenue, ST. ALBANS, AL2 1LS
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
36 Napsbury Avenue, London Colney
Date
19 Sep 2024
Current
Potential
57
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
19 Sep 2024
57
78
4 Jul 2014
65
86
16 Jul 2009
72
73
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
42 Napsbury Avenue, London Colney
Date
16 May 2013
Current
Potential
63
87
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
16 May 2013
63
87
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
44 NAPSBURY AVENUE, LONDON COLNEY
Date
26 Feb 2021
Current
Potential
60
84
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
26 Feb 2021
60
84
Total Floor Area
81 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
48 Napsbury Avenue, London Colney
Date
5 May 2020
Current
Potential
55
81
Property Type
House
Built Form
Detached
Constructed
1930-1949
Certificate History
5 May 2020
55
81
10 Dec 2008
33
46
Total Floor Area
118 sq m
Current CO2 Emissions Level
6.4
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
52 Napsbury Avenue, London Colney
Date
23 Nov 2015
Current
Potential
61
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
23 Nov 2015
61
81
Total Floor Area
96 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
54 Napsbury Avenue, London Colney
Date
6 Apr 2009
Current
Potential
41
47
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
6 Apr 2009
41
47
Total Floor Area
91 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
4.8
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
56 NAPSBURY AVENUE, LONDON COLNEY
Date
11 Jun 2021
Current
Potential
59
81
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
11 Jun 2021
59
81
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
56 Napsbury Avenue, London Colney
Date
13 Apr 2009
Current
Potential
41
57
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
13 Apr 2009
41
57
Total Floor Area
82 sq m
Current CO2 Emissions Level
6.1
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
74
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
60 Napsbury Avenue, London Colney
Date
2 Jun 2014
Current
Potential
57
70
Property Type
Maisonette
Built Form
Detached
Constructed
1930-1949
Certificate History
2 Jun 2014
57
70
Total Floor Area
56 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
62 Napsbury Avenue, London Colney
Date
8 Jul 2025
Current
Potential
63
75
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
8 Jul 2025
63
75
Total Floor Area
137 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
66 Napsbury Avenue, London Colney
Date
30 Apr 2024
Current
Potential
63
79
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
30 Apr 2024
63
79
23 May 2010
53
61
Total Floor Area
100 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
68 Napsbury Avenue, London Colney
Date
11 Jul 2023
Current
Potential
31
71
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
Certificate History
11 Jul 2023
31
71
Total Floor Area
122 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
86
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
Address
68a Napsbury Avenue, London Colney
Date
30 Apr 2024
Current
Potential
72
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
30 Apr 2024
72
80
Total Floor Area
130 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
70 Napsbury Avenue, London Colney
Date
21 Jul 2014
Current
Potential
50
75
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
21 Jul 2014
50
75
Total Floor Area
116 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
72 Napsbury Avenue, London Colney
Date
15 Nov 2017
Current
Potential
61
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
Certificate History
15 Nov 2017
61
84
28 Aug 2017
61
84
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
82 Napsbury Avenue, London Colney
Date
31 Mar 2015
Current
Potential
53
84
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
Certificate History
31 Mar 2015
53
84
Total Floor Area
81 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
56
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
86 Napsbury Avenue, London Colney
Date
16 Jan 2018
Current
Potential
64
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
16 Jan 2018
64
86
Total Floor Area
91 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
88 Napsbury Avenue, London Colney
Date
25 Mar 2024
Current
Potential
58
80
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
25 Mar 2024
58
80
Total Floor Area
118 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
90 Napsbury Avenue, London Colney
Date
2 Jun 2015
Current
Potential
64
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
Certificate History
2 Jun 2015
64
87
26 Jan 2015
30
76
26 Jan 2015
53
75
Total Floor Area
91 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
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.
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