Ask the landlord in writing when the deposit will be returned and request an itemised explanation, invoices or other evidence for any proposed deductions. A deposit may be withheld for legitimate rent arrears, damage beyond normal wear and tear, or other proven costs, but unexplained delays can be challenged. Keep your lease, payment record, photographs, inspection messages and all correspondence. If the tenancy is covered by the Residential Tenancies Board (RTB) and the issue is not resolved, you can apply for RTB dispute resolution; the outcome will depend on the facts and evidence, so consider legal advice for a complex case.