9 Chestnut Close

What the assessor found

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

• Walls

  Cavity wall, filled cavity

  Good

• Roof

  Pitched, 200 mm loft insulation

  Good

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Good

• Heating

  Room heaters, mains gas

  Average

• Heating controls

  Appliance thermostats

  Good

• Hot water

  Electric immersion, off-peak

  Very poor

• Lighting

  Low energy lighting in 89% of fixed outlets

  Very good

• 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 (2025), 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

   Party wall insulation

   Typical cost £300–£600 · saves about £51 a year

   Rating after59D
2. 2

   Floor insulation (solid floor)

   Typical cost £4,000–£6,000 · saves about £84 a year

   Rating after62D
3. 3

   Add additional 80 mm jacket to hot water cylinder

   Typical cost £15–£30 · saves about £40 a year

   Rating after63D
4. 4

   Change room heaters to condensing boiler

   Typical cost £3,000–£7,000 · saves about £502 a year

   Rating after76C
5. 5

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £56 a year

   Rating after78C
6. 6

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £3,500–£5,500 · saves about £466 a year

   Rating after89B

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