DM20 The Replacement or Rebuild of Existing Dwellings in the Green Belt - Preferred Option

This not clear enough to provide meaningful feedback. This just raises lots of questions. Needs to be definative. e.g.
Is it 25% extra of the existing dwelling (including any extensions from the original)? or,
25% extra of the original?.
What would be the situation if I had a certifcate of lawful development to extend that was not excercised but because the original building was constructed to old standards/materials I wanted to build to rebuild using new standards/materials (which is much greener)? Is it 25% extra on top of the certificate of lawful development?
With regards replacing a bungalow with a bungalow surely it is better in a rebuild scenario to build a house with the same floorspace as the bungalow as this would leave less footprint on the land.

Strongly disagree with wording contained in the pre-amble that a dwelling with an unsound roof constitutes a derelict property. The Council view would not be upheld by case law.
It would be more beneficial to the appearance of the Green Belt if the Council was less restrictive in terms of increase in floorspace and roof height. Steeper pitched roofs are more typical of the Essex vernacular and far more attracive visually.