PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Dollis Avenue, LONDON, N3 1BY
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 Dollis Avenue, N3 1BY 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 Dollis Avenue, LONDON, N3 1BY
Period Covered:
2008 - 31 January 2025
Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
31a Dollis Avenue
Date
11 Jun 2009
Current
Potential
64
73
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
11 Jun 2009
64
73
Total Floor Area
148 sq m
Current CO2 Emissions Level
5.9
Potential CO2 Emissions Level
4.5
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
31b Dollis Avenue
Date
22 Oct 2008
Current
Potential
66
74
Property Type
House
Built Form
Semi-Detached
Constructed
1983-1990
Certificate History
22 Oct 2008
66
74
Total Floor Area
143 sq m
Current CO2 Emissions Level
5.4
Potential CO2 Emissions Level
4.3
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
33 Dollis Avenue
Date
12 Nov 2021
Current
Potential
88
89
Property Type
House
Built Form
Semi-Detached
Constructed
2020
Certificate History
12 Nov 2021
88
89
Total Floor Area
169 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
33A Dollis Avenue
Date
12 Nov 2021
Current
Potential
88
89
Property Type
House
Built Form
Mid-Terrace
Constructed
2020
Certificate History
12 Nov 2021
88
89
Total Floor Area
162 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
33B Dollis Avenue
Date
12 Nov 2021
Current
Potential
88
89
Property Type
House
Built Form
Semi-Detached
Constructed
2020
Certificate History
12 Nov 2021
88
89
Total Floor Area
166 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
37 Dollis Avenue
Date
6 Jul 2023
Current
Potential
54
78
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
6 Jul 2023
54
78
Total Floor Area
432 sq m
Current CO2 Emissions Level
23.0
Potential CO2 Emissions Level
11.0
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
0
Address
39 Dollis Avenue
Date
21 Dec 2018
Current
Potential
43
72
Property Type
House
Built Form
Detached
Constructed
1900-1929
Certificate History
21 Dec 2018
43
72
Total Floor Area
386 sq m
Current CO2 Emissions Level
22.0
Potential CO2 Emissions Level
10.0
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
0
Address
43 Dollis Avenue
Date
7 Sep 2022
Current
Potential
70
80
Property Type
House
Built Form
Detached
Constructed
1930-1949
Certificate History
7 Sep 2022
70
80
8 Aug 2008
38
55
Total Floor Area
341 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
7.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
4
Address
43a Dollis Avenue
Date
21 Oct 2014
Current
Potential
63
73
Property Type
Flat
Built Form
Detached
Constructed
1930-1949
Certificate History
21 Oct 2014
63
73
Total Floor Area
108 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
3.1
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
45 Dollis Avenue
Date
24 Apr 2022
Current
Potential
71
78
Property Type
House
Built Form
Detached
Constructed
1983-1990
Certificate History
24 Apr 2022
71
78
Total Floor Area
519 sq m
Current CO2 Emissions Level
15.0
Potential CO2 Emissions Level
11.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
19
Number of Extensions
2
Address
49 Dollis Avenue
Date
8 May 2024
Current
Potential
88
90
Property Type
House
Built Form
Semi-Detached
Constructed
2024
Certificate History
8 May 2024
88
90
Total Floor Area
421 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
3.7
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
First Floor Flat, 35 Dollis Avenue
Date
27 Nov 2017
Current
Potential
73
84
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
27 Nov 2017
73
84
2 Apr 2014
64
82
11 Dec 2012
6
72
Total Floor Area
100 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat 1 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
85
85
Property Type
Flat
Built Form
Detached
Constructed
N/A
Certificate History
27 Aug 2020
85
85
Total Floor Area
203 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
14
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 3 Halley House, 31, Dollis Avenue
Date
3 Aug 2020
Current
Potential
86
86
Property Type
Flat
Built Form
Semi-Detached
Constructed
N/A
Certificate History
3 Aug 2020
86
86
Total Floor Area
208 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
13
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 4 Halley House, 31, Dollis Avenue
Date
4 Aug 2020
Current
Potential
86
86
Property Type
Flat
Built Form
Semi-Detached
Constructed
N/A
Certificate History
4 Aug 2020
86
86
Total Floor Area
167 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
12
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 5 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
87
87
Property Type
Flat
Built Form
Mid-Terrace
Constructed
N/A
Certificate History
27 Aug 2020
87
87
Total Floor Area
107 sq m
Current CO2 Emissions Level
1.2
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
12
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 6 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
87
87
Property Type
Flat
Built Form
Mid-Terrace
Constructed
N/A
Certificate History
27 Aug 2020
87
87
Total Floor Area
116 sq m
Current CO2 Emissions Level
1.3
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 7 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
88
88
Property Type
Flat
Built Form
End-Terrace
Constructed
N/A
Certificate History
27 Aug 2020
88
88
Total Floor Area
162 sq m
Current CO2 Emissions Level
1.7
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
10
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 8 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
87
87
Property Type
Flat
Built Form
Semi-Detached
Constructed
N/A
Certificate History
27 Aug 2020
87
87
Total Floor Area
166 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
12
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat 9 Halley House, 31, Dollis Avenue
Date
27 Aug 2020
Current
Potential
86
86
Property Type
Flat
Built Form
Semi-Detached
Constructed
N/A
Certificate History
27 Aug 2020
86
86
Total Floor Area
143 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
12
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Flat A, 33 Dollis Avenue
Date
22 Oct 2008
Current
Potential
82
84
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
22 Oct 2008
82
84
Total Floor Area
57 sq m
Current CO2 Emissions Level
1.4
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
1
Address
Flat B, 33 Dollis Avenue
Date
23 Jun 2009
Current
Potential
80
83
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
23 Jun 2009
80
83
Total Floor Area
80 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat C, 33 Dollis Avenue
Date
23 Jun 2009
Current
Potential
70
73
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
23 Jun 2009
70
73
Total Floor Area
49 sq m
Current CO2 Emissions Level
2.4
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
Flat D, 33 Dollis Avenue
Date
22 Oct 2008
Current
Potential
74
76
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
22 Oct 2008
74
76
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
Address
Flat E, 33 Dollis Avenue
Date
22 Oct 2008
Current
Potential
83
86
Property Type
Flat
Built Form
Detached
Constructed
2007 onwards
Certificate History
22 Oct 2008
83
86
Total Floor Area
87 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
Flat F, 33 Dollis Avenue
Date
22 Oct 2008
Current
Potential
79
81
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
22 Oct 2008
79
81
Total Floor Area
87 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
Ground Floor Flat, 35 Dollis Avenue
Date
27 Nov 2017
Current
Potential
43
81
Property Type
Flat
Built Form
Detached
Constructed
1900-1929
Certificate History
27 Nov 2017
43
81
8 Jun 2016
21
71
Total Floor Area
100 sq m
Current CO2 Emissions Level
8.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
82
Mains Gas Available
Yes
Habitable Rooms
3
Number of Extensions
0
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.
Contains public sector information licensed under the Open Government Licence v3.0.
Contains Royal Mail data © Royal Mail copyright and Database right 2025.