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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Napsbury Avenue, ST. ALBANS, AL2 1LT

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 1LT 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 1LT
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
29 Napsbury Avenue, London Colney
Date
7 Aug 2016
Current
Potential
30
78
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
7 Aug 2016
30
78
Total Floor Area
92 sq m
Current CO2 Emissions Level
9.1
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
99
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
29a Napsbury Avenue, London Colney
Date
13 May 2018
Current
Potential
83
95
Property Type
House
Built Form
End-Terrace
Constructed
N/A
+
Certificate History
13 May 2018
83
95
16 Feb 2018
83
95
Total Floor Area
78 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
0.1
CO2 per sq m per Year
16
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
37 Napsbury Avenue, London Colney
Date
15 Sep 2022
Current
Potential
67
85
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
15 Sep 2022
67
85
3 Nov 2011
34
35
Total Floor Area
103 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
49 Napsbury Avenue, London Colney
Date
15 Jan 2010
Current
Potential
78
79
Property Type
House
Built Form
End-Terrace
Constructed
2003-2006
+
Certificate History
15 Jan 2010
78
79
Total Floor Area
78 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
63 Napsbury Avenue, London Colney
Date
27 Feb 2012
Current
Potential
63
67
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
27 Feb 2012
63
67
19 May 2010
61
69
Total Floor Area
112 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
81 Napsbury Avenue, London Colney
Date
29 Dec 2017
Current
Potential
58
81
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
29 Dec 2017
58
81
Total Floor Area
80 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
85 Napsbury Avenue, London Colney
Date
18 Mar 2015
Current
Potential
75
85
Property Type
House
Built Form
End-Terrace
Constructed
1991-1995
+
Certificate History
18 Mar 2015
75
85
12 Jun 2013
72
84
Total Floor Area
123 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
27
Mains Gas Available
Yes
Habitable Rooms
7
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.