15 Apollo 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, 150 mm loft insulation

  Good

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Good

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer, room thermostat and TRVs

  Good

• Hot water

  From main system

  Good

• Lighting

  Low energy lighting in 67% of fixed outlets

  Good

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

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £41 a year

   Rating after69C
2. 2

   50 mm internal or external wall insulation

   Typical cost £4,000–£14,000 · saves about £97 a year

   Rating after72C
3. 3

   Floor insulation (solid floor)

   Typical cost £4,000–£6,000 · saves about £59 a year

   Rating after74C
4. 4

   Low energy lighting for all fixed outlets

   Typical cost £25 · saves about £26 a year

   Rating after74C
5. 5

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £61 a year

   Rating after76C
6. 6

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £47 a year

   Rating after77C
7. 7

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £3,500–£5,500 · saves about £443 a year

   Rating after87B

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