Question 1

甚麼是改建及加建工程（A&A Works）？Artful Build 如何協助業主？

Accepted Answer

簡短解答： 改建及加建工程（A&A Works）是指涉及改動樓宇結構（如拆改主力牆/開鑿樓板）、打通單位（橫向相連或複式）或修改法定防火分隔的大型建築工程，依法必須預先獲得屋宇署（BD）批准方可動工。我們的專業服務： Artful Build 由香港註冊建築師及認可人士（AP）主理，提供由現況勘測、建築方案設計、屋宇署圖則呈交（入則）、結構工程師（RSE）協調至現場施工監督的全套一站式服務，確保工程全程符合香港法例並杜絕違規風險。

Question 2

What are Alterations and Additions (A&A) works in Hong Kong?

Accepted Answer

Direct Answer: A&A works are major building modifications affecting structural integrity, statutory fire safety, or property use that legally require prior submission and approval from the Hong Kong Buildings Department (BD).Details: Under the Hong Kong Buildings Ordinance (Cap. 123), any structural alterations (such as load-bearing wall removal or slab penetration), flat combinations, or fire barrier modifications constitute A&A works. Whether renovating a heritage mansion in Mid-Levels or a property in Kowloon Tong, these works must be designed and submitted by a registered Authorized Person (AP) and Registered Structural Engineer (RSE) before construction can legally commence.

Question 3

Which home renovation works require formal plan submission to the Buildings Department?

Accepted Answer

Direct Answer: Formal plan submission to the BD is mandatory if renovations involve structural wall alterations, combining flats, modifying fire barriers, adding internal stairs, or changing statutory building use.Scope includes:Structural Alterations: Penetrating or removing load-bearing walls, beams, columns, or concrete floor slabs.Combining Units: Removing party walls horizontally or connecting upper and lower floors into a duplex.Fire Safety Barrier Modifications: Altering statutory fire compartments or means of escape (MOE).Structural Extensions: Adding internal staircases, structural mezzanines, or exterior build-outs.Change of Use: Altering the legal land/occupation use designated in the Occupation Permit (OP).

Question 4

Does combining two flats require statutory application and approval?

Accepted Answer

Direct Answer: Yes, absolutely. Combining two units without prior Buildings Department approval is a serious statutory violation resulting in prosecution and property title encumbrance.Details: Combining adjacent units or vertical duplexes impacts party wall fire compartmentation, structural load redistribution, and drainage routing. It strictly constitutes A&A works and mandates an Authorized Person (AP, such as the architectural team at Artful Build) and Registered Structural Engineer (RSE) to submit plans for formal approval and consent.

Question 5

Does removing an interior wall always require an A&A submission?

Accepted Answer

Direct Answer: No. Non-structural partition walls usually fall under the Minor Works Control System (MWCS), but removing load-bearing walls or fire-rated barrier walls strictly requires full A&A submission.Details:Non-Structural Partitions: Can be handled via simplified Minor Works notifications if they don't form fire escape barriers.Structural / Fire Walls: Removing or opening load-bearing walls compromises structural integrity and strictly demands full AP/RSE A&A plan approval before touching the wall.

Question 6

What is the distinction between A&A Works and Minor Works (MWCS)?

Accepted Answer

Direct Answer: The fundamental difference is risk level and statutory workflow: Minor Works can be completed via reporting after work, whereas A&A works legally require approval and consent before construction starts.Comparison:Minor Works (MWCS): Covers lower-risk items (Class I, II, III, such as window replacements or minor partition removals) via simplified post-construction filings.A&A Works: Involves major structural, fire safety, or usage changes. Work cannot legally begin until formal Plan Approval and Consent to Commence Works are issued by the BD.

Question 7

Why must an Authorized Person (AP) be appointed for A&A submissions?

Accepted Answer

Direct Answer: Interior designers and general contractors lack statutory authority under Hong Kong law to submit building plans. Only a government-registered Authorized Person (AP) holds the legal qualification to sign and submit A&A plans.Details: Under the Buildings Ordinance, an AP (typically a Registered Architect) acts as the legally responsible professional. The AP coordinates structural engineers (RSE), ensures full compliance with statutory fire codes, and certifies completed works to protect the owner from legal penalties.

Question 8

What are the key stages in an A&A approval workflow in Hong Kong?

Accepted Answer

Direct Answer: A standard A&A workflow consists of 7 mandatory stages from initial site survey to final completion certification.The 7 Stages:Feasibility Survey: Retrieve official Approved Plans via BD system to audit site conditions.Architectural Design: Prepare compliant architectural and structural drawings.BD Plan Submission (Approval): Submit plans to BD for statutory review (typically 60-day review period).Consent to Commence Works: Obtain formal Consent before setting up site equipment.Site Supervision: AP and RSE oversee construction to guarantee plan adherence.Final Inspection & Testing: Execute mandatory fire safety and structural testing upon completion.Completion Filing: Submit Form BA14 or apply for an amended Occupation Permit (OP).

Question 9

What are the legal and financial risks of performing unauthorized A&A works?

Accepted Answer

Direct Answer: Executing unauthorized A&A works creates Unauthorized Building Works (UBW), leading to statutory demolition orders, criminal prosecution, property title encumbrance, mortgage refusal, and insurance invalidation.Key Risks:Legal Prosecution: Non-compliance with BD Statutory Orders results in heavy daily fines and potential imprisonment.Title Encumbrance ("Nailing the Title"): Orders registered against the title block property resale and bank mortgage approvals.Voided Insurance Policies: Insurance carriers can deny coverage for claims arising from illegal building modifications.Structural Hazards: Removing structural walls threatens total building stability and occupant safety.

Question 10

How can property owners verify if their unit has existing UBW or active BD orders?

Accepted Answer

Direct Answer: You can verify property compliance by purchasing official Approved Plans via the BD BRAVO system for site reconciliation or conducting a Land Registry search.3 Verification Steps:Approved Plan Audit: Retrieve official plans via the BD BRAVO online system and conduct site reconciliation.Land Registry Search: Check land records for active Statutory Orders or notices issued by the Buildings Department.Professional Compliance Audit: Engage a Registered Architect/AP (such as Artful Build) for an on-site structural and statutory compliance audit.

Question 11

What information is required for an initial A&A feasibility assessment with Artful Build?

Accepted Answer

Direct Answer: To receive a swift preliminary feasibility review, simply share your property address, layout sketch, proposed modification scope, and site photo/video documentation.Preparation Checklist:Property address and estate name (e.g., Mid-Levels, Kowloon Tong, Island South)Existing floor plan or sales brochure layout (if available)Brief outline of proposed alterations (e.g., flat combination, wall removal, staircase modification)Photos or video walkthrough of current site conditionsLand Registry record (optional, to verify existing statutory orders)

香港改建及加建工程（A&A）及屋宇署圖則申請

⚠️「一般」室內裝修的潛在風險

甚麼是改建及加建工程？

樓宇擴建

打通樓層

單位合併

改裝大廈

外牆工程

加建室外結構

消防逃生路徑與無障礙通道升級

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The AP-Led Execution Process

Step 1

可行性研究與構思

Step 2

法定圖則呈報

Step 3

招標與工程承辦

Step 4

監管與完工簽署

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改建及加建工程 Alterations and Additions (A&A), Minor Works

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