On Tue, 6 Dec 2005 11:12:41 -0000, a particular chimpanzee named
"Christian McArdle" randomly hit
the keyboard and produced:

No. You would need to raise the floor of the utility room to meet that of
the kitchen. The floor of the garage MUST remain lower. It is part of the
building regulations that garage floors are lower than habitable rooms and
kitchens so that any heavier than air fumes and spills stay in the garage.

The floors can be the same level provided that there is a 100mm high
non-combustible threshold between the two. The OPs stud wall would
need to be built off a similar non-combustible base too (two courses
of brick below the sole plate).
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"