EPC Ratings in SN4
Postcode area SN4 — 3,938 Energy Performance Certificates on record
4K
Certificates
4K
Properties
D (67)
Average Rating
£1,217
Avg Energy Cost/yr
EPC Rating
A92+
0.7%B81–91
10.5%C69–80
40.6%D55–68
36.9%67
E39–54
9.1%F21–38
1.6%G1–20
0.5%SN4 is 1.5 points worse than the national average (D, 68.5/100).
67
SN4
68.5
National average
83
Potential (with improvements)
Rating Distribution
A
260.7%
B415
10.5%
C1,600
40.6%
D1,455
36.9%
E359
9.1%
F
631.6%
G
200.5%
Average Annual Energy Costs
| Cost Type | SN4 | National Avg | Difference |
|---|---|---|---|
| Heating | £932/yr | £782/yr | ▲ £150 |
| Hot water | £187/yr | £184/yr | ▲ £3 |
| Lighting | £99/yr | £95/yr | ▲ £4 |
| Total | £1,217/yr | £1,061/yr | ▲ £156 |
Property Types
House
2,74669.7%
Bungalow
57114.5%
Flat
49312.5%
Maisonette
1102.8%
Park home
180.5%
Main Heating Fuel
Mains gas
2,93874.6%
Electric
64016.3%
Oil
2867.3%
LPG
521.3%
Other
200.5%
CO₂ Emissions
3.9 tonnes/yr
Current average
2.1 tonnes/yr
Potential (with improvements)
Average floor area: 100 m²
Construction Age
Pre-1900
292
1900–1929
184
1930–1949
195
1950–1966
745
1967–1975
615
1976–1982
332
1983–1990
272
1991–1995
251
1996–2002
180
2003–2006
205
2007–2011
205
2012+
388
Efficiency Trend Over Time
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The postcode area SN4 has 3,938 Energy Performance Certificates on record, covering 3,763 properties. The average EPC rating is D with an efficiency score of 67 out of 100. Annual energy costs average £1,217, comprising £932 for heating, £187 for hot water and £99 for lighting. Average CO₂ emissions are 3.9 tonnes per year, with the potential to reduce to 2.1 tonnes through energy efficiency improvements.