One other con of the majority of new houses is that the roof will be constructed using roof trusses, which are perfectly fine for providing a watertight well insulated roof, but cannot be adapted to make future use of the roof space.
Pros - 10 year NHBC guarantee. Well insulated, so lower heating bills. No initial decorating or modifications needed. En suite bathrooms standard.
Cons - New build price premium. Smaller rooms. Non solid partition walls. Estate living (however, some people prefer this) Small unestablished garden.