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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Heol Tai Mawr, MERTHYR TYDFIL, CF48 1NF

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 Heol Tai Mawr, CF48 1NF 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 Heol Tai Mawr, MERTHYR TYDFIL, CF48 1NF
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
38 Heol Tai Mawr
Date
11 Sep 2019
Current
Potential
66
85
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
11 Sep 2019
66
85
13 Jul 2009
63
74
Total Floor Area
83 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
42 Heol Tai Mawr
Date
6 Dec 2011
Current
Potential
72
73
Property Type
House
Built Form
Mid-Terrace
Constructed
1930-1949
+
Certificate History
6 Dec 2011
72
73
Total Floor Area
81 sq m
Current CO2 Emissions Level
2.6
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
44 Heol Tai Mawr
Date
6 May 2025
Current
Potential
71
87
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
6 May 2025
71
87
14 Jul 2009
64
75
Total Floor Area
88 sq m
Current CO2 Emissions Level
3.4
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
46 Heol Tai Mawr
Date
31 Jul 2013
Current
Potential
45
81
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
31 Jul 2013
45
81
Total Floor Area
107 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
48 Heol Tai Mawr
Date
22 Jan 2025
Current
Potential
73
86
Property Type
House
Built Form
End-Terrace
Constructed
1950-1966
+
Certificate History
22 Jan 2025
73
86
13 Feb 2020
65
85
27 Jun 2019
62
85
14 Jul 2009
54
75
Total Floor Area
84 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
50 Heol Tai Mawr
Date
11 May 2014
Current
Potential
63
86
Property Type
House
Built Form
End-Terrace
Constructed
1930-1949
+
Certificate History
11 May 2014
63
86
7 Jun 2009
59
74
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
52 Heol Tai Mawr
Date
13 Jul 2009
Current
Potential
65
75
Property Type
House
Built Form
Mid-Terrace
Constructed
N/A
+
Certificate History
13 Jul 2009
65
75
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.1
Potential CO2 Emissions Level
2.8
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
52 HEOL TAI MAWR, SWANSEA ROAD
Date
10 May 2021
Current
Potential
72
85
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
10 May 2021
72
85
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
54 Heol Tai Mawr
Date
29 Apr 2024
Current
Potential
75
88
Property Type
House
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
29 Apr 2024
75
88
21 Apr 2024
75
88
16 Oct 2019
67
85
13 Jul 2009
65
75
8 Jan 2009
63
75
Total Floor Area
89 sq m
Current CO2 Emissions Level
2.8
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
56 Heol Tai Mawr
Date
11 Sep 2019
Current
Potential
61
79
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
11 Sep 2019
61
79
13 Jul 2009
67
77
Total Floor Area
76 sq m
Current CO2 Emissions Level
4.3
Potential CO2 Emissions Level
2.4
CO2 per sq m per Year
57
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
58 Heol Tai Mawr
Date
7 Nov 2014
Current
Potential
64
86
Property Type
House
Built Form
Mid-Terrace
Constructed
1950-1966
+
Certificate History
7 Nov 2014
64
86
Total Floor Area
84 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.0
CO2 per sq m per Year
39
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
60 Heol Tai Mawr
Date
17 Dec 2014
Current
Potential
46
80
Property Type
House
Built Form
Semi-Detached
Constructed
1930-1949
+
Certificate History
17 Dec 2014
46
80
Total Floor Area
83 sq m
Current CO2 Emissions Level
6.8
Potential CO2 Emissions Level
2.5
CO2 per sq m per Year
82
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
62 Heol Tai Mawr
Date
11 Sep 2019
Current
Potential
66
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
11 Sep 2019
66
86
13 Jul 2009
55
75
Total Floor Area
68 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
64 Heol Tai Mawr
Date
13 Feb 2020
Current
Potential
65
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
13 Feb 2020
65
86
13 Jul 2009
65
75
Total Floor Area
76 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
49
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
Ar-y-Bryn Bungalow, Heol Tai Mawr
Date
24 Jun 2012
Current
Potential
72
73
Property Type
Bungalow
Built Form
Detached
Constructed
N/A
+
Certificate History
24 Jun 2012
72
73
Total Floor Area
124 sq m
Current CO2 Emissions Level
3.7
Potential CO2 Emissions Level
3.6
CO2 per sq m per Year
30
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.