Short answer：Subdivision requires checks across the Basic Housing Unit regime, building safety, lease conditions and tenancy regulation. The BHU regime began on 1 March 2026; it is no longer merely a future proposal.
Registration differs from recognition
The Housing Bureau provides registration and transitional arrangements for pre-existing units and recognition for compliant units. Check eligibility, letting timing and any grace period; a registration acknowledgement is not proof of every standard being met.
Check legality before income
Have qualified professionals assess structure, escape, fire safety, drainage and ventilation, alongside works procedures, lease, DMC and mortgage restrictions. Applicable tenancy rules also govern rent, utilities and notices.
Before deciding
- Check unit and tenancy coverage
- Obtain written works and recognition advice
- Include compliance, vacancy and repair costs
Sources and method
Sources support the specific rules described. Checklists and hypothetical calculations are editorial explanations, not measured market results or individual approvals.
Revision：Removed unsupported experience, case outcomes and statistics; corrected the topic-specific rules and limitations described above.
Scope：General information only, not personalised legal, tax, immigration, admissions or investment advice.