Repair Challenges in Hong Kong Subdivided Flats
Subdivided flats, known locally as 劏房 (tong fong), house an estimated 226,000 people in roughly 110,000 units across Hong Kong. These units — carved from larger flats by adding partition walls, kitchens, and bathrooms — present maintenance challenges far beyond what typical flats face. Understanding these issues is essential for safety and legal compliance.
Electrical Overload
This is the most dangerous issue in subdivided flats. When a flat designed for one household is split into three or four units, each with its own air conditioner, water heater, and appliances, the original electrical supply is stretched beyond capacity. Many older buildings in Sham Shui Po, Yau Ma Tei, and To Kwa Wan have only 60 to 100 amperes per flat — insufficient when divided among multiple units.
Warning signs include frequently tripping circuit breakers, warm or discoloured sockets, flickering lights, and burning smells from wiring. These demand immediate attention, as overloaded wiring is the leading cause of fires in subdivided flats.
Plumbing and Drainage Problems
Subdividing means adding bathrooms and kitchens not in the original design. Extra water connections strain ageing pipes, while new drainage routes are prone to blockages. Many subdivided flats have drainage pipes in exposed plastic conduits along walls — functional but vulnerable. When one unit's drain blocks, sewage can back up into neighbouring units, causing disputes over responsibility.
Structural and Fire Safety
Partition walls range from proper brick to lightweight plasterboard or timber framing. Lightweight partitions offer virtually no fire resistance, and many lack the one-hour fire rating required under the Buildings Ordinance. Many subdivided flats have only one exit, and narrow corridors impede evacuation. Locked metal security gates can trap residents during emergencies.
Tenant Rights and Landlord Responsibilities
Under the Landlord and Tenant (Consolidation) Ordinance (Cap. 7) and the 2022 tenancy control regulation for subdivided units, tenants have specific protections:
- Habitable condition: Landlords must maintain functioning plumbing, safe electrical installations, and weatherproof walls and windows.
- Structural repairs: The landlord is responsible for the building fabric, shared drainage, and electrical supply up to the distribution board.
- Tenancy control: Since January 2022, regulated SDU tenancies have four-year security of tenure and rent increases capped at 10% upon renewal.
- Reporting unsafe conditions: Tenants can report dangerous electrics to the EMSD and unauthorized building works to the Buildings Department.
Getting Repairs Done
Document everything with photographs, note dates, and put repair requests to the landlord in writing — a WhatsApp message with a read receipt is acceptable. If the landlord fails to act, seek assistance from the Rating and Valuation Department. For urgent safety issues, contact the Fire Services Department at 2723 2233 or the EMSD emergency hotline at 2333 3888.
Practical Safety Steps
- Install smoke detectors: Battery-operated alarms cost as little as HK$50 and provide life-saving early warning.
- Avoid daisy-chaining power strips: Never plug one extension lead into another. Use a single high-quality power strip with overload protection.
- Keep escape routes clear: Never block corridors with stored items. Ensure everyone knows the evacuation route.
- Check water heater ventilation: Gas water heaters in enclosed spaces without adequate ventilation cause carbon monoxide deaths in Hong Kong every year.
Living in a subdivided flat comes with inherent challenges, but understanding your rights and prioritising safety makes a significant difference. Many community organisations offer free consultation for SDU tenants.