Mandatory Window Inspection: 5 Essential Steps After Receiving Notice

What Is the Mandatory Window Inspection Scheme (MWIS)?

The Mandatory Window Inspection Scheme (MWIS), implemented on 30 June 2012, is a statutory scheme operated by the Buildings Department under the Buildings Ordinance. All private buildings aged 10 years or more across Hong Kong must undergo window inspections on a regular cycle — once every 5 years.

The purpose of the scheme is to ensure the safety of windows across Hong Kong, preventing window fall accidents caused by long-term neglect, and protecting public safety.

5 Essential Steps After Receiving Notice

Step 1: Confirm the Notice Type: Upon receiving your Buildings Department window inspection order, read it carefully and confirm whether it is a "first round" or "subsequent round" notice, and which floors and windows are covered. Note the completion deadline stated on the notice — typically within 6 months of receipt.

Step 2: Appoint a Qualified Contractor: The inspection must be carried out by a contractor holding a valid Minor Works Contractor (MWC 316/2021) licence recognised by the Buildings Department. Inspection carried out by unlicensed persons will not be accepted by the Buildings Department. Amgen Aluminium Windows holds the MWC 316/2021 licence and is a recognised qualified contractor.

Step 3: Carry Out the Window Inspection: The qualified contractor will attend the property to carry out a full inspection of all external windows, skylights and corridor windows, including the condition of frames, sashes, hinges, handles and weatherstrips.

Step 4: Complete Repairs (if required): If the inspection identifies any damage or safety hazards, repairs must be completed within the specified deadline. All relevant records and invoices must be retained upon completion.

Step 5: Submit the Completion Report: Upon completion of inspection and repairs, the contractor must complete and submit the prescribed form (Form WI1) to the Buildings Department as the official record of compliance.

Cost Reference

The cost of mandatory window inspection varies depending on the size of the building, the number of windows and whether repairs are required.

The following are window inspection fee reference prices

Service Item	Cost Range
Whole-unit window inspection	HKD $300 - $800
Basic repair (hinge replacement)	HKD $2,000 - $3,000
Safety package (hinges + handles)	HKD $3,000 - $6,000
Submission of completion report	Included in service fee

Consequences of Non-Compliance

The Buildings Department takes strict action against non-compliant owners, including gazette notices, prosecution and enforcement orders. Owners are advised to take action immediately upon receiving a notice and not to delay.

Warning: Failure to complete the mandatory window inspection within the required period may result in a Fixed Penalty Notice of $1,500. Continued non-compliance will lead to prosecution by the Buildings Department — upon conviction, the maximum penalty is a fine of $25,000 and three months' imprisonment.

Types of Windows Requiring Inspection

External wall windows: All openable windows facing the external walls

Skylights: Windows installed in ceilings or roofs

Corridor windows: Windows in common corridors

Balcony windows: Floor-to-ceiling windows and glass doors on balconies

How to Choose the Right Contractor

When selecting a contractor, the most important factor is confirming that they hold a valid MWC 316/2021 (Minor Works Contractor) licence. Licence details can be verified on the Buildings Department website.

Amgen Aluminium Windows Co. Ltd. holds the MWC 316/2021 licence and has over 20 years of experience in window inspection and aluminium window repair. We provide comprehensive inspection and repair services, including assistance with completing and submitting the completion report on behalf of owners.