On 28 Mar 2006 01:36:50 -0800, a particular chimpanzee named
randomly hit the keyboard and produced:

The last BCO inspection is done at what state of finishedness ?
Is it usually after the plastering / skimming is done, or can it be
before ?

After. For a final inspection, everything to which the Building
Regulations relates must be in place and completed, so, for example,
the kitchen sink must be installed, the extract fans in and working,
and since 2004, the electrics must be completed and certified by the
installer.

Are you perhaps getting ahead of yourself? Have you dug your footings
yet?
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"