Trees ~ preservation orders (see page 123) may be waived by the
local planning authority. Permission for tree felling is by formal
application and will be considered if the proposed development is in
the economic and business interests of the community. However,
tree removal is only likely to be acceptable if there is an
agreement for replacement stock being provided elsewhere on the
site.In these circumstances, there is potential for ground heave within
the `footprint' of felled trees. To resist this movement, foundations
must incorporate an absorbing layer or compressible filler with
ground floor suspended above the soil.Foundations---Subsoil Movements