EPC Ratings in ST11
Postcode area ST11 — 1,250 Energy Performance Certificates on record
1K
Certificates
1K
Properties
C (69)
Average Rating
£1,300
Avg Energy Cost/yr
EPC Rating
A92+
8.6%B81–91
13.8%C69–80
29.3%69
D55–68
35.9%E39–54
9.5%F21–38
2.5%G1–20
0.4%ST11 is 0.5 points better than the national average (D, 68.5/100).
69
ST11
68.5
National average
84
Potential (with improvements)
Rating Distribution
A107
8.6%
B173
13.8%
C366
29.3%
D449
35.9%
E119
9.5%
F
312.5%
G
50.4%
Average Annual Energy Costs
| Cost Type | ST11 | National Avg | Difference |
|---|---|---|---|
| Heating | £1,017/yr | £782/yr | ▲ £235 |
| Hot water | £177/yr | £184/yr | ▼ £7 |
| Lighting | £106/yr | £95/yr | ▲ £11 |
| Total | £1,300/yr | £1,061/yr | ▲ £239 |
Property Types
House
96477.1%
Bungalow
18815.0%
Flat
977.8%
Maisonette
10.1%
Main Heating Fuel
Mains gas
1,11589.2%
Oil
594.7%
Electric
564.5%
LPG
100.8%
Other
100.8%
CO₂ Emissions
4.2 tonnes/yr
Current average
2.3 tonnes/yr
Potential (with improvements)
Average floor area: 102 m²
Construction Age
Pre-1900
71
1900–1929
85
1930–1949
124
1950–1966
286
1967–1975
178
1976–1982
59
1983–1990
49
1991–1995
18
1996–2002
16
2003–2006
70
2007–2011
23
2012+
222
Efficiency Trend Over Time
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The postcode area ST11 has 1,250 Energy Performance Certificates on record, covering 1,209 properties. The average EPC rating is C with an efficiency score of 69 out of 100. Annual energy costs average £1,300, comprising £1,017 for heating, £177 for hot water and £106 for lighting. Average CO₂ emissions are 4.2 tonnes per year, with the potential to reduce to 2.3 tonnes through energy efficiency improvements.