How much does drain cleaning cost in Hong Kong?
Free, no obligation. Sign in with Google to send your request.
Key takeaways
- Most drain cleaning jobs in Hong Kong land between HK$350–HK$4,500 — known locally as drain unblocking (通渠).
- Plumbing installation work in Hong Kong falls under the Waterworks Ordinance (licensed plumbers) and drainage under the Buildings Ordinance; communal drainage in multi-owner buildings is maintained by the owners' corporation. The Consumer Council regularly logs complaints about drain-clearing price gouging.
- Prices below are researched national ranges, updated July 2026 — not quotes.
Drain Cleaning prices by job size in Hong Kong
| Job size | Low | Typical | High |
|---|---|---|---|
| Single fixture choke Sink, floor drain or toilet cleared by machine | HK$350 | HK$600 | HK$1,000 |
| Main pipe choke Flat's main discharge line machine-cleared | HK$800 | HK$1,400 | HK$2,500 |
| Camera inspection + jetting CCTV survey and jetting of aging stacks | HK$1,500 | HK$2,500 | HK$4,500 |
Per-unit rates
| Unit | Low | Typical | High |
|---|---|---|---|
| per choke cleared | HK$400 | HK$800 | HK$1,500 |
What affects the price
- Job size and scope — bigger or more complex jobs move you up the ranges above.
- Access and condition — hard-to-reach areas, older properties or neglected maintenance add labour time.
- Materials and quality level — where materials are involved, the grade you choose often matters more than labour.
- Urgency — same-day or out-of-hours work usually carries a premium.
- Where you live — large metros in Hong Kong typically run above the national range; smaller towns below it.
How to save
- Get at least three quotes and compare like-for-like scopes, not just totals.
- Be flexible on timing — off-peak slots are often cheaper.
- Bundle related tasks into one visit to spread call-out costs.
- Agree the scope in writing up front to avoid change-order surprises.
How to hire a drain cleaning pro in Hong Kong
- Use a licensed plumber for repair works; simple unblocking (tung kui) services are widespread but vary hugely in quality
- In apartment buildings, determine whether the blockage is in your flat's pipes or the communal stack — communal pipes are the building management's/owners' corporation's responsibility
- Agree a fixed price before work starts — quote inflation is the top complaint in this trade in HK
- Ask for proper machine clearing rather than chemical pouring
- Get a receipt from a registered company
- For recurring chokes in older buildings, ask about camera inspection of aging cast-iron stacks
Red flags
- Sticker/flyer operators with no company identity
- Quotes that multiply once the ceiling or pipe is opened — insist on written pricing
- Chemical-only treatment of solid blockages
- No receipt
How Handld researches prices
These are researched estimates, not quotes and not our transaction data. We compile ranges from published sources — national statistics, trade bodies and incumbent cost guides — normalise them to HKD, and adjust city pages by a population-based cost tier. Last updated July 2026. Basis: HK Consumer Council complaint guidance on 通渠 services; HK plumbing platform rates (Toby).
Frequently asked questions
How do I stop drains blocking again?
Keep fats and oils out of the kitchen sink (bin them cooled), fit hair catchers in showers, flush only the 3 Ps, and jet lines with known root intrusion every 12-18 months until the pipe is repaired or relined. Recurring blocks always have a physical cause worth diagnosing.
Who is responsible for a blocked drain — homeowner, neighbour, or utility?
Generally you own the pipes within your property boundary, while shared or public sewers are the utility's (or body corporate's) problem. If sewage backs up from a shared line, report it to the utility before paying a private contractor — it may be cleared free.
Can chemical drain cleaners fix a blocked drain?
Caustic supermarket products sometimes clear light soap/hair partial blocks, but they don't touch grease plugs or roots, they damage older pipes and seals, and they make the drain hazardous for the plumber who eventually opens it. For a fully blocked drain, go mechanical.
What causes most blocked drains?
Kitchen lines: grease and food solids. Bathrooms: hair and soap scum. Toilets: wipes (including 'flushable' ones) and sanitary products. Outside: tree roots entering pipe joints and silt. Knowing the likely cause helps the plumber bring the right machine first visit.
When is a CCTV drain survey worth paying for?
After a second blockage in the same line, before buying a house, or when you suspect root intrusion or a collapsed pipe. The camera shows exactly what and where the problem is, so you fix the cause instead of paying for repeat clearances.
What is the difference between snaking and hydro jetting?
A drain snake (electric eel/auger) bores a hole through the blockage — fast and cheap, but debris and grease remain on pipe walls. Hydro jetting scours the full pipe diameter with high-pressure water, clearing grease, scale and roots properly. Jetting costs more but lasts longer for recurring blocks.
Why do Hong Kong drain-clearing prices vary so wildly?
The 通渠 trade is fragmented with flyer-based operators quoting low and inflating after opening pipes. Protect yourself: agree the all-in price in writing before work starts, use registered companies, and involve building management for anything in communal stacks.
Free, no obligation. Sign in with Google to send your request.