assume that a BCO could cope with this - but it's likely to cost you a lot
more in fees than it would if you were to combine it into a single
application.
Yep.
But the dropped job will be incorporated in a single building notice
covering
all the other jobs that were never going to be on the full plans !
(removal of chimney, en-suite, new windows ... etc)

By the way, a building notice (not done one before) is priced according
to the cost of the job.
I am doing the job myself. Can I just give myself a very low quote ?
Simon.