Question juridique clé
Whether the small annex of house no. 2 could intrude into the boundary setback
Solution extraite
A small annex may extend into the setback if it does not impair the setback's public or private purpose.
Motifs extraits
The purpose of the setback is not affected; the annex is subordinate and the statutory and analogical reading of the building rules allows limited intrusion by minor projecting parts.