Under circumstances to be examined on a case-by-case basis, a "presumed consensus" may be assumed, i.e. that the building was probably approved many decades ago,
- if the building has been in existence for many decades and
- if there are indications that the archives are incomplete.
To avoid a nasty surprise in the form of a demolition order, we are happy to clarify in advance of the purchase of such a property whether there is a "presumed consensus".