How Much Does Electrical Wiring Renovation Cost in Hong Kong?
Hong Kong market reference price
Full-flat electrical rewiring in Hong Kong typically costs HK$8,000–HK$35,000, depending on unit size and number of circuits required.
Electrical Wiring Renovation Pricing Guide
(Prices may be higher for premium-tier cases)
* Prices are market reference ranges. Actual costs may vary.
Demand for electrical rewiring in Hong Kong is primarily driven by aging residential buildings from the 1970s–1990s, where outdated aluminium wiring and undersized consumer units pose significant fire risks. The growing adoption of electric vehicles has further driven demand, as EV charger installation typically requires dedicated circuits and distribution board upgrades. Supported by Hong Kong's active secondary property renovation market, demand for licensed electrical contractors remains strong, though a shortage of licensed electricians drives up prices in certain districts.
Choose contractors who provide transparent, itemised quotations. Confirm the contractor holds a valid REW or REW1 licence and clarify whether WR1 completion certificate submission to CLP/HKE is included in the quoted price.
Frequently Asked Questions
Electrical rewiring costs in Hong Kong are generally calculated by unit size: flats under 500 sq ft typically cost HK$8,000–$15,000; 600–900 sq ft units cost HK$15,000–$25,000; units of 1,000 sq ft or above may cost HK$25,000–$35,000 or more. Costs include wire replacement, sockets, and switch upgrades. Distribution board upgrades or additional circuits are priced separately. Always request at least three quotes from licensed electrical contractors.
Wiring over 25–30 years old should generally be considered for replacement. Common warning signs include frequent circuit breaker trips, warm or burning-smell sockets, flickering lights, mild electric shocks from appliances, and visibly cracked or brittle cable insulation found during renovation. Older buildings with aluminium wiring or undersized copper cables should be prioritised for replacement to reduce fire and electrocution risks.
是的。根據香港法例，完成電業工程後，持牌電業承辦商必須向電力公司（中電CLP或港燈HKE）提交「電業工程完工證書」（WR1 Form）。如工程涉及主幹線路、電錶板改動或新增三相電源，電力公司可能需要派員驗收。建議選擇熟悉WR1申報的持牌承辦商，確保工程合規，保障日後保險索償及物業交易不受影響。
電線翻新費用主要受單位面積、電路數目及佈線複雜度影響。舊樓鋁芯電線更換難度較高；走暗喉鑿牆佈線亦增加成本。電錶板升級、EV充電器電路或三相電申請均屬額外工程，需另行報價。地區因素及工程時序亦會影響最終報價。建議同時取得三份或以上報價作比較。
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