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PROPERTY ENERGY EFFICIENCY CERTIFICATE DETAILS
Chiltern Avenue, NORTHAMPTON, NN5 6AP

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 Chiltern Avenue, NN5 6AP 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 Chiltern Avenue, NORTHAMPTON, NN5 6AP
Period Covered: 2008 - 31 January 2025

Address
Inspection Date
Current
Potential
Property Type
Built Form
Constructed
Address
10 CHILTERN AVENUE, NORTHAMPTON
Date
4 Oct 2020
Current
Potential
51
73
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
4 Oct 2020
51
73
Total Floor Area
109 sq m
Current CO2 Emissions Level
6.3
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
58
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
1
Address
12 CHILTERN AVENUE
Date
13 Sep 2020
Current
Potential
63
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
13 Sep 2020
63
83
Total Floor Area
89 sq m
Current CO2 Emissions Level
4.2
Potential CO2 Emissions Level
1.9
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
13 Chiltern Avenue
Date
8 Jan 2019
Current
Potential
46
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
8 Jan 2019
46
80
Total Floor Area
79 sq m
Current CO2 Emissions Level
6.0
Potential CO2 Emissions Level
2.1
CO2 per sq m per Year
76
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
15 Chiltern Avenue
Date
6 Apr 2010
Current
Potential
67
74
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
6 Apr 2010
67
74
Total Floor Area
78 sq m
Current CO2 Emissions Level
3.5
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
44
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
2 Chiltern Avenue
Date
8 Aug 2022
Current
Potential
70
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
8 Aug 2022
70
83
3 Dec 2011
65
68
8 Mar 2010
71
73
Total Floor Area
81 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
20 Chiltern Avenue
Date
12 Jan 2024
Current
Potential
83
86
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
12 Jan 2024
83
86
16 Mar 2009
63
72
Total Floor Area
96 sq m
Current CO2 Emissions Level
2.1
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
21
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
21 CHILTERN AVENUE, NORTHAMPTON
Date
24 Mar 2021
Current
Potential
68
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
24 Mar 2021
68
82
Total Floor Area
80 sq m
Current CO2 Emissions Level
3.0
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
25 Chiltern Avenue
Date
29 Jan 2019
Current
Potential
65
76
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
29 Jan 2019
65
76
Total Floor Area
111 sq m
Current CO2 Emissions Level
4.8
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
2
Address
27 Chiltern Avenue
Date
17 Apr 2016
Current
Potential
62
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
17 Apr 2016
62
82
Total Floor Area
97 sq m
Current CO2 Emissions Level
4.6
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
28 Chiltern Avenue
Date
30 May 2017
Current
Potential
73
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
30 May 2017
73
86
Total Floor Area
90 sq m
Current CO2 Emissions Level
2.8
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
29 Chiltern Avenue
Date
20 Aug 2017
Current
Potential
58
71
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
20 Aug 2017
58
71
Total Floor Area
112 sq m
Current CO2 Emissions Level
5.8
Potential CO2 Emissions Level
4.1
CO2 per sq m per Year
52
Mains Gas Available
Yes
Habitable Rooms
6
Number of Extensions
0
Address
3 Chiltern Avenue
Date
10 Mar 2014
Current
Potential
69
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
10 Mar 2014
69
84
Total Floor Area
103 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.6
CO2 per sq m per Year
32
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
34 Chiltern Avenue
Date
17 Feb 2015
Current
Potential
59
88
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
17 Feb 2015
59
88
Total Floor Area
88 sq m
Current CO2 Emissions Level
4.7
Potential CO2 Emissions Level
1.2
CO2 per sq m per Year
53
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
37 Chiltern Avenue
Date
21 Apr 2013
Current
Potential
73
87
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
21 Apr 2013
73
87
Total Floor Area
80 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
1.1
CO2 per sq m per Year
31
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
38 Chiltern Avenue
Date
9 Oct 2018
Current
Potential
69
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
9 Oct 2018
69
79
Total Floor Area
102 sq m
Current CO2 Emissions Level
3.8
Potential CO2 Emissions Level
2.6
CO2 per sq m per Year
38
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
1
Address
39 Chiltern Avenue
Date
13 Apr 2010
Current
Potential
46
73
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
13 Apr 2010
46
73
Total Floor Area
94 sq m
Current CO2 Emissions Level
6.7
Potential CO2 Emissions Level
3.3
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
4 Chiltern Avenue
Date
29 Mar 2023
Current
Potential
49
71
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
29 Mar 2023
49
71
Total Floor Area
77 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
3.2
CO2 per sq m per Year
71
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
40 Chiltern Avenue
Date
2 Jul 2018
Current
Potential
65
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
2 Jul 2018
65
86
Total Floor Area
89 sq m
Current CO2 Emissions Level
3.9
Potential CO2 Emissions Level
1.5
CO2 per sq m per Year
43
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
41 Chiltern Avenue
Date
3 Sep 2016
Current
Potential
67
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
3 Sep 2016
67
79
27 Oct 2011
70
72
Total Floor Area
210 sq m
Current CO2 Emissions Level
7.6
Potential CO2 Emissions Level
5.0
CO2 per sq m per Year
36
Mains Gas Available
Yes
Habitable Rooms
8
Number of Extensions
3
Address
42 Chiltern Avenue
Date
8 Apr 2024
Current
Potential
72
86
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
8 Apr 2024
72
86
Total Floor Area
84 sq m
Current CO2 Emissions Level
2.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
34
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
44 Chiltern Avenue
Date
30 Jun 2016
Current
Potential
60
84
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
30 Jun 2016
60
84
Total Floor Area
113 sq m
Current CO2 Emissions Level
5.5
Potential CO2 Emissions Level
2.2
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
2
Address
44A Chiltern Avenue, Duston
Date
27 Sep 2021
Current
Potential
81
97
Property Type
House
Built Form
End-Terrace
Constructed
2021
+
Certificate History
27 Sep 2021
81
97
Total Floor Area
53 sq m
Current CO2 Emissions Level
1.0
Potential CO2 Emissions Level
-0.1
CO2 per sq m per Year
20
Mains Gas Available
No
Habitable Rooms
0
Number of Extensions
0
Address
45 Chiltern Avenue
Date
4 Mar 2013
Current
Potential
58
79
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
4 Mar 2013
58
79
Total Floor Area
119 sq m
Current CO2 Emissions Level
5.6
Potential CO2 Emissions Level
2.7
CO2 per sq m per Year
47
Mains Gas Available
Yes
Habitable Rooms
7
Number of Extensions
2
Address
49 Chiltern Avenue
Date
12 Apr 2024
Current
Potential
71
77
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
12 Apr 2024
71
77
Total Floor Area
50 sq m
Current CO2 Emissions Level
2.0
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
49a Chiltern Avenue
Date
20 Mar 2024
Current
Potential
73
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
20 Mar 2024
73
78
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
5 Chiltern Avenue
Date
16 Jan 2017
Current
Potential
69
83
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
16 Jan 2017
69
83
Total Floor Area
89 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
37
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
0
Address
51 Chiltern Avenue
Date
9 Nov 2022
Current
Potential
46
73
Property Type
Maisonette
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
9 Nov 2022
46
73
5 Jun 2022
36
73
Total Floor Area
49 sq m
Current CO2 Emissions Level
3.2
Potential CO2 Emissions Level
1.8
CO2 per sq m per Year
66
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
51a Chiltern Avenue
Date
30 Aug 2014
Current
Potential
60
66
Property Type
Flat
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
30 Aug 2014
60
66
3 May 2012
69
73
Total Floor Area
46 sq m
Current CO2 Emissions Level
2.5
Potential CO2 Emissions Level
2.0
CO2 per sq m per Year
55
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
53 Chiltern Avenue
Date
19 Oct 2010
Current
Potential
63
72
Property Type
Flat
Built Form
End-Terrace
Constructed
1967-1975
+
Certificate History
19 Oct 2010
63
72
Total Floor Area
48 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
2.3
CO2 per sq m per Year
64
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
55 Chiltern Avenue
Date
20 Mar 2024
Current
Potential
77
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
20 Mar 2024
77
79
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
57 Chiltern Avenue
Date
20 Mar 2024
Current
Potential
77
79
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1976-1982
+
Certificate History
20 Mar 2024
77
79
24 Mar 2011
78
82
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.5
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
28
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
57a Chiltern Avenue
Date
30 Sep 2019
Current
Potential
69
70
Property Type
Flat
Built Form
Mid-Terrace
Constructed
1967-1975
+
Certificate History
30 Sep 2019
69
70
15 Oct 2009
57
65
Total Floor Area
36 sq m
Current CO2 Emissions Level
1.8
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
50
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
59 Chiltern Avenue
Date
29 Apr 2014
Current
Potential
68
76
Property Type
Flat
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
29 Apr 2014
68
76
13 Mar 2009
73
78
Total Floor Area
48 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.3
CO2 per sq m per Year
40
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
59a Chiltern Avenue
Date
20 Mar 2024
Current
Potential
73
78
Property Type
Flat
Built Form
End-Terrace
Constructed
1976-1982
+
Certificate History
20 Mar 2024
73
78
Total Floor Area
54 sq m
Current CO2 Emissions Level
1.9
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
2
Number of Extensions
0
Address
6 Chiltern Avenue
Date
30 Aug 2020
Current
Potential
67
85
Property Type
House
Built Form
Semi-Detached
Constructed
1976-1982
+
Certificate History
30 Aug 2020
67
85
25 Mar 2010
50
72
Total Floor Area
77 sq m
Current CO2 Emissions Level
3.3
Potential CO2 Emissions Level
1.4
CO2 per sq m per Year
42
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
7 Chiltern Avenue
Date
13 Jul 2020
Current
Potential
71
85
Property Type
House
Built Form
Semi-Detached
Constructed
1967-1975
+
Certificate History
13 Jul 2020
71
85
Total Floor Area
90 sq m
Current CO2 Emissions Level
3.1
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
35
Mains Gas Available
Yes
Habitable Rooms
5
Number of Extensions
0
Address
8 Chiltern Avenue
Date
20 Dec 2013
Current
Potential
56
82
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
20 Dec 2013
56
82
Total Floor Area
83 sq m
Current CO2 Emissions Level
4.5
Potential CO2 Emissions Level
1.7
CO2 per sq m per Year
54
Mains Gas Available
Yes
Habitable Rooms
4
Number of Extensions
1
Address
9 Chiltern Avenue
Date
23 Feb 2016
Current
Potential
55
80
Property Type
House
Built Form
Semi-Detached
Constructed
1950-1966
+
Certificate History
23 Feb 2016
55
80
Total Floor Area
144 sq m
Current CO2 Emissions Level
6.9
Potential CO2 Emissions Level
3.4
CO2 per sq m per Year
48
Mains Gas Available
Yes
Habitable Rooms
6
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.