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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
St. Marys Avenue, NORTHWOOD, HA6 3AY

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 St. Marys Avenue, HA6 3AY 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 St. Marys Avenue, NORTHWOOD, HA6 3AY
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
13 St. Marys Avenue
Date
30 Jan 2023
Current
Potential
59
84
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
30 Jan 2023
59
84
Total Floor Area
154 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
15 St. Marys Avenue
Date
26 Jul 2012
Current
Potential
72
80
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
26 Jul 2012
72
80
Total Floor Area
385 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
7.3
CO2 per sq m per Year
26
Mains Gas Available
Yes
Habitable Rooms
12
Number of Extensions
1
Address
17 St. Marys Avenue
Date
18 Jul 2018
Current
Potential
73
83
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
18 Jul 2018
73
83
Total Floor Area
207 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
25 St. Marys Avenue
Date
16 Aug 2024
Current
Potential
63
85
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
16 Aug 2024
63
85
18 May 2012
59
85
Total Floor Area
145 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
29 St. Marys Avenue
Date
25 Oct 2024
Current
Potential
55
83
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
25 Oct 2024
55
83
24 Oct 2024
55
84
Total Floor Area
148 sq m
Current CO2 Emissions Level
7.6
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
31 St. Marys Avenue
Date
3 Jun 2019
Current
Potential
63
83
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
3 Jun 2019
63
83
Total Floor Area
183 sq m
Current CO2 Emissions Level
7.4
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
33 St. Marys Avenue
Date
15 May 2012
Current
Potential
58
82
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
15 May 2012
58
82
Total Floor Area
166 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
35 St. Marys Avenue
Date
8 Sep 2020
Current
Potential
40
81
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
8 Sep 2020
40
81
Total Floor Area
172 sq m
Current CO2 Emissions Level
12.0
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
69
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
41 St. Marys Avenue
Date
12 Jun 2023
Current
Potential
44
73
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
12 Jun 2023
44
73
Total Floor Area
150 sq m
Current CO2 Emissions Level
9.8
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
43 St. Marys Avenue
Date
12 Jun 2023
Current
Potential
66
86
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
12 Jun 2023
66
86
Total Floor Area
144 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
5 St. Marys Avenue
Date
15 Feb 2013
Current
Potential
64
83
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
15 Feb 2013
64
83
Total Floor Area
179 sq m
Current CO2 Emissions Level
6.5
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
51 St. Marys Avenue
Date
7 Aug 2024
Current
Potential
80
83
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
7 Aug 2024
80
83
25 Apr 2014
58
83
Total Floor Area
292 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
4.8
CO2 per sq m per Year
20
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
53 St. Marys Avenue
Date
17 Jan 2025
Current
Potential
73
80
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
17 Jan 2025
73
80
8 Aug 2014
62
80
Total Floor Area
205 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
2
Address
7 St. Marys Avenue
Date
5 Sep 2024
Current
Potential
70
81
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
5 Sep 2024
70
81
Total Floor Area
189 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
3.8
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
8
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.