40 Nelson Gardens

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

  (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

  Room thermostat only

  Poor

• Hot water

  From main system

  Good

• Lighting

  Low energy lighting in 50% of fixed outlets

  Good

The assessor's estimates at the energy prices in use when the certificate was made (2016), 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

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £174 a year

   Rating after74C
2. 2

   Draught proof single-glazed windows

   Typical cost £80–£120 · saves about £9 a year

   Rating after74C
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £20 · saves about £21 a year

   Rating after75C
4. 4

   Replace boiler with new condensing boiler

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

   Rating after77C
5. 5

   Replace single glazed windows with low-E double glazed windows

   Typical cost £3,300–£6,500 · saves about £54 a year

   Rating after80C

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