20 Greenleaf Close

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, 75 mm loft insulation

  Very poor

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Room thermostat only

  Poor

• Hot water

  From main system

  Very 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 (2014), 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 £45 a year

   Rating after63D
2. 2

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £137 a year

   Rating after69C
3. 3

   Floor insulation

   Typical cost £800–£1,200 · saves about £82 a year

   Rating after72C
4. 4

   Low energy lighting for all fixed outlets

   Typical cost £40 · saves about £35 a year

   Rating after74C
5. 5

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £24 a year

   Rating after75C
6. 6

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £241 a year

   Rating after85B

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