The message
from "Peter Crosland" contains these words:

I think most agricultural buildings of any size would need planning
permission now but the route my neighbour took for a new barn was much
easier than the hoops those putting up domestic buildings have to jump
through.

I can't recall all the detail but basically all he had to do was to give
a certain period of notice and if the Council didn't object he could go
ahead with his building. There were several caveats including the
obvious one that it had to be an agricultural building. The other 2 that
I can remember were that he had to have a certain amount of land (10
hectare perhaps or is that the amount of land you need before you can
get on the single payment gravy train?) and the barn had to be at least
a certain distance (100m probably) away for any dwelling other than his
own.

The permitted developement rights for agricultural buildings are of course
different from those for other types. Nevertheless they do still apply.

Perhaps but the above was about a short route to planning consent that
is not available on domenstic builds.

--
Roger Chapman