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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Onslow Gardens, LONDON, N21 1DX

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 Onslow Gardens, N21 1DX 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 Onslow Gardens, LONDON, N21 1DX
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 Onslow Gardens
Date
11 May 2022
Current
Potential
62
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
11 May 2022
62
80
Total Floor Area
111 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
3
Address
12 ONSLOW GARDENS
Date
22 Jun 2021
Current
Potential
66
84
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
22 Jun 2021
66
84
Total Floor Area
141 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
14 Onslow Gardens
Date
9 Aug 2013
Current
Potential
66
86
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
9 Aug 2013
66
86
Total Floor Area
126 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
16 Onslow Gardens
Date
7 Oct 2024
Current
Potential
63
86
Property Type
House
Built Form
Semi-Detached
Constructed
1900-1929
+
Certificate History
7 Oct 2024
63
86
Total Floor Area
107 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
18 Onslow Gardens
Date
12 Oct 2021
Current
Potential
63
83
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
12 Oct 2021
63
83
Total Floor Area
124 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
20 Onslow Gardens
Date
28 Apr 2024
Current
Potential
53
73
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Apr 2024
53
73
Total Floor Area
108 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
22 Onslow Gardens
Date
25 Jun 2019
Current
Potential
1
77
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
25 Jun 2019
1
77
Total Floor Area
111 sq m
Current CO2 Emissions Level
12.0
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
111
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
30 Onslow Gardens
Date
30 Jan 2025
Current
Potential
59
85
Property Type
Bungalow
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
30 Jan 2025
59
85
Total Floor Area
78 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
32 Onslow Gardens
Date
4 Nov 2024
Current
Potential
56
77
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
4 Nov 2024
56
77
Total Floor Area
151 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
34 Onslow Gardens
Date
28 Sep 2017
Current
Potential
66
82
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Sep 2017
66
82
Total Floor Area
209 sq m
Current CO2 Emissions Level
7.0
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
1
Address
36 Onslow Gardens
Date
17 Mar 2023
Current
Potential
65
82
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
17 Mar 2023
65
82
23 Feb 2012
58
63
Total Floor Area
125 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
2
Address
38 Onslow Gardens
Date
28 Nov 2023
Current
Potential
58
74
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
28 Nov 2023
58
74
Total Floor Area
140 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
42 Onslow Gardens
Date
1 Nov 2017
Current
Potential
62
86
Property Type
Bungalow
Built Form
Detached
Constructed
1967-1975
+
Certificate History
1 Nov 2017
62
86
21 Apr 2017
65
86
15 Sep 2010
65
72
Total Floor Area
89 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
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.

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