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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Castle Hill Avenue, BERKHAMSTED, HP4 1HJ

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 Castle Hill Avenue, HP4 1HJ 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 Castle Hill Avenue, BERKHAMSTED, HP4 1HJ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 Castle Hill Avenue
Date
13 Dec 2023
Current
Potential
82
85
Property Type
House
Built Form
Detached
Constructed
2007-2011
+
Certificate History
13 Dec 2023
82
85
25 Oct 2011
84
85
Total Floor Area
407 sq m
Current CO2 Emissions Level
7.6
Potential CO2 Emissions Level
6.6
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
2
Address
13 Castle Hill Avenue
Date
17 Sep 2019
Current
Potential
64
75
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
17 Sep 2019
64
75
Total Floor Area
190 sq m
Current CO2 Emissions Level
7.3
Potential CO2 Emissions Level
5.1
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
3
Address
16 Castle Hill Avenue
Date
19 Apr 2023
Current
Potential
67
80
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
19 Apr 2023
67
80
Total Floor Area
125 sq m
Current CO2 Emissions Level
4.9
Potential CO2 Emissions Level
3.0
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
17 Castle Hill Avenue
Date
20 Sep 2016
Current
Potential
66
81
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
20 Sep 2016
66
81
Total Floor Area
143 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
18 Castle Hill Avenue
Date
1 Oct 2015
Current
Potential
54
85
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
1 Oct 2015
54
85
Total Floor Area
121 sq m
Current CO2 Emissions Level
7.1
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
59
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
20 Castle Hill Avenue
Date
8 Nov 2022
Current
Potential
70
82
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
8 Nov 2022
70
82
Total Floor Area
110 sq m
Current CO2 Emissions Level
4.0
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
0
Address
21 CASTLE HILL AVENUE, BERKHAMSTED
Date
12 Jan 2021
Current
Potential
71
77
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
12 Jan 2021
71
77
Total Floor Area
222 sq m
Current CO2 Emissions Level
7.2
Potential CO2 Emissions Level
5.8
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
2
Address
22 Castle Hill Avenue
Date
29 Aug 2013
Current
Potential
65
76
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
29 Aug 2013
65
76
Total Floor Area
139 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
23 Castle Hill Avenue
Date
16 Sep 2020
Current
Potential
50
76
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
16 Sep 2020
50
76
16 Sep 2020
50
76
24 Apr 2018
44
66
Total Floor Area
142 sq m
Current CO2 Emissions Level
7.8
Potential CO2 Emissions Level
3.5
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
1
Address
25 Castle Hill Avenue
Date
13 Sep 2020
Current
Potential
64
78
Property Type
House
Built Form
Detached
Constructed
1991-1995
+
Certificate History
13 Sep 2020
64
78
Total Floor Area
115 sq m
Current CO2 Emissions Level
4.4
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
27 Castle Hill Avenue
Date
30 Jul 2019
Current
Potential
63
75
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
30 Jul 2019
63
75
Total Floor Area
230 sq m
Current CO2 Emissions Level
9.5
Potential CO2 Emissions Level
6.8
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
1
Address
3 Castle Hill Avenue
Date
2 Jan 2023
Current
Potential
79
87
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
2 Jan 2023
79
87
24 Mar 2015
66
81
Total Floor Area
194 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
17
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
30 Castle Hill Avenue
Date
4 Jun 2024
Current
Potential
72
72
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
4 Jun 2024
72
72
5 Mar 2018
65
77
Total Floor Area
431 sq m
Current CO2 Emissions Level
8.0
Potential CO2 Emissions Level
8.0
CO2 per sq m per Year
19
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
2
Address
32 Castle Hill Avenue
Date
3 Feb 2020
Current
Potential
67
69
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
3 Feb 2020
67
69
Total Floor Area
753 sq m
Current CO2 Emissions Level
26.0
Potential CO2 Emissions Level
25.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
9
Number of Extensions
4
Address
34 Castle Hill Avenue
Date
9 Oct 2023
Current
Potential
65
72
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
9 Oct 2023
65
72
Total Floor Area
248 sq m
Current CO2 Emissions Level
8.6
Potential CO2 Emissions Level
7.0
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
4
Address
38 Castle Hill Avenue
Date
11 Sep 2019
Current
Potential
60
80
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
11 Sep 2019
60
80
Total Floor Area
111 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.9
CO2 per sq m per Year
51
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
48 Castle Hill Avenue
Date
16 Mar 2010
Current
Potential
69
72
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
16 Mar 2010
69
72
Total Floor Area
155 sq m
Current CO2 Emissions Level
5.1
Potential CO2 Emissions Level
4.9
CO2 per sq m per Year
33
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
50 Castle Hill Avenue
Date
31 Aug 2022
Current
Potential
61
72
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
31 Aug 2022
61
72
Total Floor Area
162 sq m
Current CO2 Emissions Level
7.6
Potential CO2 Emissions Level
5.6
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
8 Castle Hill Avenue
Date
22 Jan 2015
Current
Potential
74
82
Property Type
House
Built Form
Detached
Constructed
1930-1949
+
Certificate History
22 Jan 2015
74
82
15 Mar 2011
41
64
Total Floor Area
198 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
4.2
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
8
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.