EPC Ratings in ST21
Postcode area ST21 — 841 Energy Performance Certificates on record
841
Certificates
801
Properties
D (62)
Average Rating
£1,632
Avg Energy Cost/yr
EPC Rating
A92+
5.8%B81–91
10.6%C69–80
24.0%D55–68
30.1%62
E39–54
19.4%F21–38
7.8%G1–20
2.3%ST21 is 6.5 points worse than the national average (D, 68.5/100).
62
ST21
68.5
National average
82
Potential (with improvements)
Rating Distribution
A
495.8%
B89
10.6%
C202
24.0%
D253
30.1%
E163
19.4%
F
667.8%
G
192.3%
Average Annual Energy Costs
| Cost Type | ST21 | National Avg | Difference |
|---|---|---|---|
| Heating | £1,278/yr | £782/yr | ▲ £496 |
| Hot water | £236/yr | £184/yr | ▲ £52 |
| Lighting | £118/yr | £95/yr | ▲ £23 |
| Total | £1,632/yr | £1,061/yr | ▲ £571 |
Property Types
House
64576.7%
Bungalow
10412.4%
Flat
8910.6%
Maisonette
30.4%
Main Heating Fuel
Mains gas
40247.9%
Oil
18522.1%
Electric
14517.3%
LPG
738.7%
Other
344.1%
CO₂ Emissions
5.3 tonnes/yr
Current average
2.7 tonnes/yr
Potential (with improvements)
Average floor area: 117 m²
Construction Age
Pre-1900
184
1900–1929
61
1930–1949
39
1950–1966
134
1967–1975
96
1976–1982
35
1983–1990
39
1991–1995
29
1996–2002
30
2003–2006
41
2007–2011
26
2012+
71
Efficiency Trend Over Time
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The postcode area ST21 has 841 Energy Performance Certificates on record, covering 801 properties. The average EPC rating is D with an efficiency score of 62 out of 100. Annual energy costs average £1,632, comprising £1,278 for heating, £236 for hot water and £118 for lighting. Average CO₂ emissions are 5.3 tonnes per year, with the potential to reduce to 2.7 tonnes through energy efficiency improvements.