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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Jeffreys Street, LONDON, NW1 9PS

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 Jeffreys Street, NW1 9PS 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 Jeffreys Street, LONDON, NW1 9PS
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
11 Jeffreys Street
Date
24 Apr 2023
Current
Potential
63
86
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
24 Apr 2023
63
86
Total Floor Area
111 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
13 Jeffreys Street
Date
18 Apr 2010
Current
Potential
38
54
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
18 Apr 2010
38
54
Total Floor Area
114 sq m
Current CO2 Emissions Level
9.1
Potential CO2 Emissions Level
6.6
CO2 per sq m per Year
80
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
1a Jeffreys Street
Date
13 Mar 2019
Current
Potential
57
74
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
13 Mar 2019
57
74
3 Dec 2012
58
76
10 Aug 2009
36
39
Total Floor Area
50 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
80
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
1b Jeffreys Street
Date
2 Aug 2022
Current
Potential
51
78
Property Type
Flat
Built Form
End-Terrace
Constructed
before 1900
+
Certificate History
2 Aug 2022
51
78
4 May 2011
50
60
Total Floor Area
55 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
52
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
1c Jeffreys Street
Date
3 Dec 2013
Current
Potential
69
79
Property Type
Flat
Built Form
End-Terrace
Constructed
1900-1929
+
Certificate History
3 Dec 2013
69
79
Total Floor Area
37 sq m
Current CO2 Emissions Level
1.6
Potential CO2 Emissions Level
0.9
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
1d Jeffreys Street
Date
13 Mar 2019
Current
Potential
57
74
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
13 Mar 2019
57
74
25 Sep 2012
35
81
19 Oct 2008
38
48
Total Floor Area
50 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
80
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
1e Jeffreys Street
Date
15 Jun 2020
Current
Potential
65
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
15 Jun 2020
65
79
27 Sep 2016
21
70
6 Oct 2008
17
55
Total Floor Area
66 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
76
Mains Gas Available
No
Habitable Rooms
3
Number of Extensions
0
Address
21 Jeffreys Street
Date
17 May 2023
Current
Potential
67
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
17 May 2023
67
83
24 Nov 2008
40
51
Total Floor Area
128 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
27 Jeffreys Street
Date
8 Oct 2015
Current
Potential
58
82
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
8 Oct 2015
58
82
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.0
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
45
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
29 Jeffreys Street
Date
11 Jun 2024
Current
Potential
60
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
11 Jun 2024
60
78
7 May 2014
60
83
25 Jun 2013
58
78
Total Floor Area
141 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
3 Jeffreys Street
Date
6 Jul 2017
Current
Potential
59
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
6 Jul 2017
59
83
Total Floor Area
118 sq m
Current CO2 Emissions Level
5.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
33 Jeffreys Street
Date
22 Jun 2022
Current
Potential
57
83
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
22 Jun 2022
57
83
Total Floor Area
126 sq m
Current CO2 Emissions Level
5.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
35 Jeffreys Street, London
Date
16 Jan 2024
Current
Potential
73
82
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
16 Jan 2024
73
82
Total Floor Area
165 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
37 Jeffreys Street
Date
1 Jun 2015
Current
Potential
73
83
Property Type
House
Built Form
Mid-Terrace
Constructed
1991-1995
+
Certificate History
1 Jun 2015
73
83
Total Floor Area
168 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
25
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
5 Jeffreys Street
Date
11 Apr 2024
Current
Potential
53
78
Property Type
House
Built Form
Mid-Terrace
Constructed
1900-1929
+
Certificate History
11 Apr 2024
53
78
Total Floor Area
124 sq m
Current CO2 Emissions Level
5.7
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
46
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
7 Jeffreys Street
Date
27 Mar 2019
Current
Potential
68
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
27 Mar 2019
68
88
Total Floor Area
112 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
9 Jeffreys Street
Date
16 Oct 2024
Current
Potential
71
88
Property Type
House
Built Form
Mid-Terrace
Constructed
before 1900
+
Certificate History
16 Oct 2024
71
88
9 Jan 2014
42
87
Total Floor Area
120 sq m
Current CO2 Emissions Level
3.6
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
30
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
3
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 2026.