2a Cotman Road

What the assessor found

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

• Walls

  Cavity wall, as built, no insulation (assumed)

  Poor

• Roof

  Pitched, no insulation

  Very poor

• Floor

  Solid, limited insulation (assumed)

  Not rated on the certificate

• 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 33% of fixed outlets

  Average

• Second heating

  Portable electric heaters (assumed)

  Not rated on the certificate

The assessor's estimates at the energy prices in use when the certificate was made (2012), 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

   Increase loft insulation to 270 mm

   Typical cost £100–£350 · saves about £160 a year

   Rating after61D
2. 2

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £62 a year

   Rating after66D
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £30 · saves about £23 a year

   Rating after67D
4. 4

   Upgrade heating controls

   Typical cost £350–£450 · saves about £10 a year

   Rating after68D
5. 5

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £51 a year

   Rating after71C
6. 6

   Replace single glazed windows with low-E double glazed windows

   Typical cost £3,300–£6,500 · saves about £20 a year

   Rating after73C

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