拆牆改間隔安全嗎？消委會踢爆75%裝修公司唔核實牆身｜AC入則完整指南2026

消委會調查：1,205宗裝修投訴 拆牆問題最致命

香港消費者委員會最新研究披露，2017 至 2023 年共接獲 1,205 宗家居裝修投訴，平均涉款 20 至 30 萬元，最大金額一宗高達 270 萬元。最令人擔憂嘅係，消委會「放蛇」查詢拆牆工程時，竟發現有 75% 裝修公司喺未核實牆身性質前，已經拍心口話「冇問題、隨時拆得」。但事實上，拆錯一幅承重牆，可能令整層樓結構受損，業主隨時面對天文數字賠償同刑責。

承重牆 vs 間隔牆：點樣分辨？

香港住宅嘅牆身大致分兩類：承重牆（Structural Wall）厚度通常 200mm 以上，鋼筋密度高，主要分布喺單位外圍、樓梯間附近；間隔牆（Partition Wall）厚度多數 80–150mm，主要係磚牆或輕質板，純粹用嚟分間房間，理論上可以拆。但即使係間隔牆，亦未必所有結構都可隨意改動 —— 涉及廚房、廁所或排水位嘅牆，往往連帶喉管同防水層，拆牆即等於重做防水。如果係 70 年代以上嘅舊樓，分辨難度更高，必須要由註冊結構工程師（RSE）出圖確認。可以先參考我哋整理嘅室內設計 8 步完整流程，了解度尺後第一件事就係結構圖核實。

幾時需要入則？4 種情況一定要申請

根據屋宇署規定，以下 4 種工程必須委託認可人士（AP）入則，並取得屋宇署批准先可動工：

• 拆除或改動任何承重牆：罰則最高為港幣 25 萬元 + 監禁 1 年
• 改動廁所、廚房位置：涉及排污管搬位
• 加建閣樓、天台屋：屬僭建範圍
• 外牆改動、改窗形：影響大廈外觀及結構

入則費用約 $30,000–$80,000，視乎工程規模；認可人士費用另計，整體流程需時 3–6 個月。如果你購入嘅係獨立屋或村屋，由於涉及更多結構性改動，入則幾乎係必經程序。

裝修公司報價單必須包含嘅 5 項拆牆細節

消委會建議業主簽約前必須要求裝修公司喺報價單列明以下事項，避免事後加錢爭拗：

• 每幅擬拆牆嘅尺寸（長 × 高 × 厚）同位置標示
• 結構評估報告附件（誰人簽署、日期、RSE 牌照號碼）
• 拆牆後嘅補漆、補地板工序及單價
• 建築廢料運走費用（每車 $1,500–$3,500）
• 是否包括入則或結構工程師費用

我哋嘅裝修流程表 Excel 模板有詳細範本可下載，業主可逐項對照。揀公司前，亦建議參考室內設計師統包服務 6 大檢核重點，分清邊啲工序屬於設計師責任、邊啲屬於分判工頭責任。

2026 拆牆改間隔市場價錢

根據 AC 設計師最新觀察，香港 2026 年磚牆拆除費用約 $80–$120 / 呎，輕質板牆約 $50–$80 / 呎；如連同重砌新牆（包油漆、批盪），收費約 $250–$400 / 呎。500 呎單位若需打通客廳同房間，整體工程連結構評估、入則、清運、補漆，預算約 $80,000–$150,000。揀裝修公司時，建議參考我哋嘅香港室內設計公司點揀指南，重點檢視公司是否願意提供結構工程師簽署嘅評估報告 —— 唔肯出紙嘅，幾平都唔好做。完成拆牆後嘅防水重做亦同樣關鍵，否則隨時演變成浴室磁磚滲水等長期煩惱。

AC Design 拆牆服務承諾

藝創室內設計嘅所有拆牆工程，必由註冊結構工程師（RSE）現場勘察並出具評估報告，報價單清楚列明每幅牆嘅性質、尺寸、處理方式同清運費，絕不口頭承諾。如有任何疑問，致電 5222 1129 或 WhatsApp 查詢，亦可瀏覽我哋嘅設計服務頁面或預約免費上門度尺。

English Summary

The Hong Kong Consumer Council recently revealed a startling finding: in a mystery-shopper investigation, 75% of renovation contractors were willing to demolish walls without first verifying whether they were load-bearing — a violation that can compromise structural integrity and trigger fines up to HK$250,000 plus one year imprisonment. Between 2017 and 2023, the Council received 1,205 home renovation complaints averaging HK$200,000–300,000 each, with the largest single case reaching HK$2.7 million.

This article explains how Hong Kong homeowners can distinguish load-bearing (structural) walls — typically 200mm+ thick and located along unit perimeters or stairwells — from partition walls (80–150mm thick brick or lightweight board). Even non-structural partitions can hide plumbing or waterproofing layers, so kitchen and bathroom walls require special handling. For buildings older than the 1970s, only a Registered Structural Engineer (RSE) can reliably classify wall types from on-site inspection.

The article outlines four scenarios that legally require Building Department approval through a registered Authorised Person (AP): demolishing structural walls, relocating kitchens or bathrooms, building mezzanines or rooftop additions, and altering external walls or window openings. Submission fees typically run HK$30,000–80,000 with a 3–6 month approval timeline.

Five mandatory items every demolition quotation should include: precise wall dimensions and positions, the structural assessment report with RSE licence number, post-demolition restoration costs, waste removal fees (HK$1,500–3,500 per truck), and AP submission fees. Market pricing for 2026: brick wall demolition runs HK$80–120 per square foot, lightweight partition HK$50–80, and full demolition-plus-rebuild HK$250–400 per square foot. For a typical 500 sqft unit needing significant layout changes, total budget lands between HK$80,000 and HK$150,000. AC Design guarantees every demolition project is preceded by an on-site RSE assessment with all classifications itemised in the quotation. Contact 5222 1129 for a free consultation.