45b Sotheby Road

What the assessor found

Each part of the home, with the certificate's own energy efficiency rating.

• Walls

  Solid brick, as built, no insulation (assumed)

  Very poor

• Roof

  (another dwelling above)

  Not rated on the certificate

• Floor

  (another dwelling below)

  Not rated on the certificate

• Windows

  Single glazed

  Very poor

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer and room thermostat

  Average

• Hot water

  From main system

  Good

• Lighting

  Low energy lighting in 20% of fixed outlets

  Poor

The assessor's estimates at the energy prices in use when the certificate was made (2015), for a typical household. Today's bills will differ.

Improvements the certificate recommends

In the certificate's order. Each rating assumes the steps before it are done.

1. 1

   50 mm internal or external wall insulation

   Typical cost £4,000–£14,000 · saves about £115 a year

   Rating after75C
2. 2

   Draught proof single-glazed windows

   Typical cost £80–£120 · saves about £6 a year

   Rating after76C
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £40 · saves about £24 a year

   Rating after77C
4. 4

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £29 a year

   Rating after79C
5. 5

   Replace single glazed windows with low-E double glazed windows

   Typical cost £3,300–£6,500 · saves about £43 a year

   Rating after81B

Costs and savings are the certificate's own, as estimated when it was made.