As such they shouldn t need planning permission but there are a few exceptions.
Roof balcony planning permission.
The juliet balcony has a floor no matter how slim it will be considered a raised platform and will need planning approval.
People who would like a balcony also wonder if it will need planning permission.
This is especially the case in conservation areas or where there is no precedent.
However if you are completing any further renovations to create a physical balcony or terrace you must contact your local authority to gain planning permission.
The dormer may well be permitted development but accessing the roof to use as a balcony is not.
While constructing a balcony does require planning permission under the town and country planning order our range of balcony windows do not need planning permission.
In uk the answer would mostly be yes because raised platforms are not permitted developments.
Architexeter 12 dec 2013 2.