Try a direct conversation first — most disputes come from misunderstandings. If that fails, write to them. If still unresolved, lodge a by-law breach complaint with the owners corporation, then mediate, then escalate to the tribunal.
Examples of common neighbour disputes: noise, smoking, parking, pets, balcony use, smell from cooking. Document specific incidents (date, time, what happened, witnesses) before escalating. The committee can issue notices to comply but can't 'punish' a neighbour outside the by-law process.
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