消委會揭75%裝修拆牆唔核實結構｜AC 設計師 5 招辨承重牆 + 法定避坑指南

消委會驚人調查：1205宗投訴揭裝修界拆牆亂象

消費者委員會 2026 年最新公布報告，2017 至 2023 年累計接獲 1,205 宗家居裝修投訴，平均每年 172 宗，每宗涉款 HK$200,000-300,000，最高一宗達 HK$2,700,000。當中最令業界震驚嘅發現：75% 受查裝修公司表示拆牆前毋須核實牆身性質！呢個比例反映行業普遍忽視結構安全，業主隨時面臨樓宇結構受損、違反《建築物條例》甚至刑事責任嘅風險。AC 設計師強調，拆牆絕對唔可以求其，特別係香港大部分舊樓主力承重結構複雜，一旦拆錯主力牆，輕則樓宇出現裂紋下沉，重則整棟樓宇結構受影響，重修費動輒幾十萬港幣。

承重牆 vs 非承重牆：5 招專業分辨方法

1. 睇厚度：承重牆通常厚 150mm-200mm 以上，非承重間隔牆只有 75mm-100mm，量度時連抹灰層一齊計。
2. 查圖則：屋宇署入伙紙嘅結構圖紙會清楚標示主力牆位置（黑色實心線），可向管理處索取或屋宇署查冊，每次查冊費約 HK$30。
3. 敲擊測試：實心承重牆敲落聲音沉實，磚牆或輕質間隔牆有明顯空心回聲，惟此法只可作初步參考。
4. 位置判斷：外牆、樓梯間牆、單位邊界牆、有橫樑連接嘅牆，幾乎肯定係承重結構，廚廁背後嘅水管牆亦多屬主力結構。
5. 專業確認：聘請註冊結構工程師（RSE）現場勘察，費用約 HK$3,000-8,000，比起拆錯後重修動輒幾十萬慳得多。

拆牆前必做 4 大法定程序

香港屋宇署規定，凡涉及結構改動嘅工程必須符合《建築物條例》第 123 章：
• 小型工程制度：拆除非主力牆通常屬第 III 級小型工程，需由註冊小型工程承建商承做並向屋宇署備存記錄。
• 主力牆改動：必須委聘認可人士（AP）或註冊結構工程師（RSE）入則申請，審批期約 60-90 日，工程費另計約 HK$15,000-50,000。
• 公屋／居屋限制：房委會明文禁止拆除承重牆，違者可被收回單位處理。
• 公契審視：私人屋苑大廈公契可能設更嚴格規定，須先取得管理處及業主立案法團批文。

2026 慳錢避坑：點揀正規裝修公司？

消委會建議業主簽約前確認 4 大重點：報價清晰列明物料品牌型號及數量、付款分期合理（避免一次過交付超過 30%）、合約寫明工期及違約罰則、查冊公司商業登記及過往糾紛紀錄。AC 設計師承接全屋裝修，由註冊結構工程師合作出圖，每個拆牆方案均附結構評估書，業主可放心。立即查看我哋嘅完工案例了解工程質素，或瀏覽全屋裝修服務，需要評估歡迎聯絡我哋。致電 5222 1129 或 WhatsApp 查詢，AC 設計師為你免費評估拆牆可行性。

English Summary

Hong Kong’s Consumer Council recently released a startling report covering 2017-2023, recording 1,205 home renovation complaints with an average of 172 cases per year. Each complaint involved HK$200,000-300,000 on average, with one extreme case reaching HK$2.7 million. The most shocking finding: 75% of surveyed renovation firms admitted they do not verify a wall’s structural nature before demolition. This widespread negligence exposes homeowners to serious structural risks, breaches of the Buildings Ordinance, and potential criminal liability when contractors demolish load-bearing walls without proper assessment.

AC Design recommends 5 professional methods to distinguish load-bearing walls from partitions: (1) Check thickness — load-bearing walls are typically 150-200mm versus 75-100mm partitions; (2) Verify structural drawings via the Buildings Department or management office (HK$30 search fee); (3) Tap test — solid walls sound dense, hollow partitions echo; (4) Position-based judgment — exterior walls, staircase walls, and walls connected to beams are almost always load-bearing; (5) Hire a Registered Structural Engineer (RSE) for site assessment, costing HK$3,000-8,000 — far cheaper than the HK$200,000+ remediation needed if the wrong wall is demolished.

Hong Kong’s Buildings Ordinance Cap. 123 requires structural modifications to follow strict legal procedures: minor works (non-load-bearing demolition) need registered minor works contractors; load-bearing modifications require an Authorized Person (AP) or RSE to submit plans, with 60-90 day approval and HK$15,000-50,000 in professional fees. Public Housing Authority prohibits load-bearing demolition entirely. AC Design partners with certified RSEs on every demolition project and provides full structural assessment reports for client peace of mind. Call 5222 1129 or WhatsApp for a free consultation today.