Advanced

PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Williamson Street, LONDON, N7 0SQ

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 Williamson Street, N7 0SQ 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 Williamson Street, LONDON, N7 0SQ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Williamson Street
Date
16 Mar 2015
Current
Potential
59
74
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
16 Mar 2015
59
74
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
11 Williamson Street
Date
27 Jun 2020
Current
Potential
56
83
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
27 Jun 2020
56
83
11 May 2010
77
78
Total Floor Area
91 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
15 Williamson Street
Date
6 Apr 2021
Current
Potential
77
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
6 Apr 2021
77
87
Total Floor Area
123 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
22
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
17 Williamson Street
Date
8 Sep 2015
Current
Potential
66
84
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
8 Sep 2015
66
84
Total Floor Area
117 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
18 Williamson Street
Date
25 Jan 2017
Current
Potential
69
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
25 Jan 2017
69
85
Total Floor Area
107 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
19 Williamson Street
Date
24 May 2022
Current
Potential
72
89
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
24 May 2022
72
89
Total Floor Area
107 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
29
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
27 Williamson Street
Date
18 Jan 2024
Current
Potential
77
87
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
18 Jan 2024
77
87
22 Dec 2015
46
71
Total Floor Area
95 sq m
Current CO2 Emissions Level
2.2
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
23
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
4 Williamson Street
Date
22 Dec 2021
Current
Potential
62
83
Property Type
House
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
22 Dec 2021
62
83
Total Floor Area
94 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
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.