How Much Does Plumbing Renovation Cost in Hong Kong?
Hong Kong market reference price
Plumbing renovation in Hong Kong costs HK$15,000–$60,000, depending on flat size, scope (kitchen, bathroom, or whole unit), pipe material (copper, PVC, or stainless steel), and whether it is part of a broader renovation. Full-unit pipe replacement with renovation typically exceeds HK$30,000.
Plumbing Renovation Pricing Guide
(Prices may be higher for premium-tier cases)
* Prices are market reference ranges. Actual costs may vary.
Hong Kong plumbing renovation demand is driven primarily by the aging housing stock of the 1970s–1990s, where lead pipes and corroding galvanized iron pipes present water quality and structural risks. The Water Supplies Department's household lead investigation initiatives have prompted more property owners to proactively replace aging pipe systems. Kitchen and bathroom renovation projects remain the primary driver, closely tied to Hong Kong's overall renovation market cycle. Demand for licensed plumbers remains steady, supported by systematic water main replacement projects in large residential estates.
Choose contractors who provide transparent, itemised quotations. Confirm the contractor is a Water Supplies Department registered plumber and clarify whether completion water pressure testing and a written warranty are included in the quoted price.
Frequently Asked Questions
Plumbing renovation costs in Hong Kong are generally calculated by unit size and number of kitchens/bathrooms. Units under 500 sq ft with one kitchen and one bathroom typically cost HK$15,000–$22,000; 600–900 sq ft units with two bathrooms cost HK$22,000–$32,000; larger units of 1,000 sq ft or above may reach HK$32,000–$40,000 or more. Surface-mounted piping typically costs 20–30% less than concealed routing. Request at least three quotes from licensed plumbers for comparison.
The most common materials in Hong Kong are stainless steel braided flexible hoses and uPVC pipes. Stainless steel hoses last 15–20 years and are ideal for main kitchen and bathroom supply lines. uPVC is more affordable for shorter pipe runs. Older buildings may still have lead-based pipes (PB pipes), which should be replaced immediately due to lead leaching health risks. Contractors generally recommend stainless steel braided hoses for supply lines and PVC for drainage.
走明喉（外露喉管）費用一般比走暗喉（埋牆喉管）低20至35%。走暗喉需要鑿牆開槽、再行批盪修補，增加額外材料及人工。以廚房局部水喉為例，走明喉約HK$3,000至$6,000，走暗喉則需$5,000至$10,000。整體而言，翻新預算充裕者可選走暗喉以美觀為主；預算有限或租客單位則多選走明喉，日後維修亦更便捷。
水喉翻新費用主要受單位面積、廚廁數量、喉管物料及走喉方式（明喉或暗喉）影響。舊樓涉及鉛喉或鋅鐵喉更換難度較高，費用亦相應增加。需要鑿牆走暗喉、更換大廈公共供水支喉，或分批施工，亦會拉高報價。廚廁水電同步翻新可節省整體成本，建議與裝修工程統籌安排。
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