What insulation adds in OX26, Bicester
The realistic uplift
Each energy certificate lists the improvements an assessor recommends and the rating the home would reach if they were done. Averaged across 2920 certificates in OX26, the current rating of 70.8 could rise to about 84.9 out of 100. The estimated annual heating cost averages £511 now, and about £432 after the recommended work – an estimated saving of roughly £79 a year.
These are the register's own estimates, averaged across many homes; the figure for any one property depends on its fabric and how it is heated.
What the certificates say about the fabric
The most common construction descriptions recorded across these certificates. Percentages are of certificates where the field was recorded.
Walls
- Cavity wall, as built, insulated (assumed) – 60.7%
- Cavity wall, filled cavity – 15.4%
- Average thermal transmittance 0.25 W/m²K – 5.3%
Recorded as having no wall insulation: 4.6%.
Roofs
- Pitched, 100 mm loft insulation – 12.7%
- Pitched, 200 mm loft insulation – 12.6%
- Pitched, insulated (assumed) – 11.9%
Recorded as having no roof insulation: 0.7%.
Glazing
- Fully double glazed – 97.9%
- High performance glazing – 1.0%
- Partial double glazing – 0.3%
Main heating
- Boiler and radiators, mains gas – 78.5%
- Electric storage heaters – 11.8%
- Room heaters, electric – 3.4%
Which streets need it most
See the streets in OX26 with the highest share of homes rated band D or below.
Leakiest streets in OX26