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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Park Avenue South, HARPENDEN, AL5 2DZ

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 Park Avenue South, AL5 2DZ 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 Park Avenue South, HARPENDEN, AL5 2DZ
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
1 Park Avenue South
Date
13 Sep 2018
Current
Potential
57
74
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
13 Sep 2018
57
74
Total Floor Area
208 sq m
Current CO2 Emissions Level
9.9
Potential CO2 Emissions Level
6.0
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
1
Address
11 Park Avenue South
Date
25 Jun 2013
Current
Potential
46
73
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
25 Jun 2013
46
73
Total Floor Area
389 sq m
Current CO2 Emissions Level
20.0
Potential CO2 Emissions Level
10.0
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
1
Address
11a Park Avenue South
Date
31 Jul 2020
Current
Potential
70
74
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
31 Jul 2020
70
74
Total Floor Area
327 sq m
Current CO2 Emissions Level
10.0
Potential CO2 Emissions Level
9.0
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
11
Number of Extensions
4
Address
15a Park Avenue South
Date
18 Oct 2015
Current
Potential
83
87
Property Type
House
Built Form
Detached
Constructed
N/A
+
Certificate History
18 Oct 2015
83
87
24 Jun 2010
32
61
Total Floor Area
1,086 sq m
Current CO2 Emissions Level
16.0
Potential CO2 Emissions Level
13.0
CO2 per sq m per Year
15
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
17 Park Avenue South
Date
28 Jul 2014
Current
Potential
61
71
Property Type
House
Built Form
Detached
Constructed
1983-1990
+
Certificate History
28 Jul 2014
61
71
Total Floor Area
298 sq m
Current CO2 Emissions Level
11.0
Potential CO2 Emissions Level
8.3
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
10
Number of Extensions
1
Address
19a Park Avenue South
Date
30 Jul 2023
Current
Potential
90
90
Property Type
House
Built Form
Detached
Constructed
2022
+
Certificate History
30 Jul 2023
90
90
18 Aug 2019
51
71
Total Floor Area
367 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
3.9
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
23a Park Avenue South
Date
2 May 2023
Current
Potential
81
88
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
2 May 2023
81
88
Total Floor Area
365 sq m
Current CO2 Emissions Level
8.7
Potential CO2 Emissions Level
5.7
CO2 per sq m per Year
24
Mains Gas Available
Yes
Habitable Rooms
11
Number of Extensions
1
Address
5 Park Avenue South
Date
27 Feb 2024
Current
Potential
46
71
Property Type
House
Built Form
Detached
Constructed
1900-1929
+
Certificate History
27 Feb 2024
46
71
Total Floor Area
194 sq m
Current CO2 Emissions Level
0.2
Potential CO2 Emissions Level
-0.4
CO2 per sq m per Year
1
Mains Gas Available
No
Habitable Rooms
7
Number of Extensions
2
Address
7 Park Avenue South
Date
18 Jun 2013
Current
Potential
58
71
Property Type
House
Built Form
Detached
Constructed
1950-1966
+
Certificate History
18 Jun 2013
58
71
Total Floor Area
365 sq m
Current CO2 Emissions Level
15.0
Potential CO2 Emissions Level
10.0
CO2 per sq m per Year
41
Mains Gas Available
Yes
Habitable Rooms
12
Number of Extensions
2
Address
9 Park Avenue South
Date
8 Feb 2019
Current
Potential
86
88
Property Type
House
Built Form
Detached
Constructed
N/A
+
Certificate History
8 Feb 2019
86
88
5 Apr 2016
69
82
Total Floor Area
597 sq m
Current CO2 Emissions Level
6.6
Potential CO2 Emissions Level
5.7
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
Carmyle House, Park Avenue South
Date
18 Mar 2014
Current
Potential
86
86
Property Type
House
Built Form
Detached
Constructed
N/A
+
Certificate History
18 Mar 2014
86
86
Total Floor Area
708 sq m
Current CO2 Emissions Level
7.9
Potential CO2 Emissions Level
7.9
CO2 per sq m per Year
11
Mains Gas Available
No
Habitable Rooms
0
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.

Contains public sector information licensed under the Open Government Licence v3.0.
Contains Royal Mail data © Royal Mail copyright and Database right 2026.