432105Intercommunication system, installation and maintenance
閉路通訊系統安裝及保養
Why 6 digits?
HSIC subclasses are 6 digits. The first four match the international ISIC class; Hong Kong adds a two-digit local suffix for finer detail, especially across its import and export trade, so a code steps from a 4-digit class straight to a 6-digit subclass. More on the HSIC structure.
This activity involves the installation and maintenance of building intercommunication systems, which facilitate communication within buildings. It includes the setup of intercoms, intercom systems, and related equipment to ensure effective communication among occupants.
This classification includes
- building intercommunication system, installation and maintenance
Licences and approvals
What this activity needs to operate
Activities under this code trigger the following licensing regimes. Emerhub prepares and files each application on your behalf.
Registered Electrical Contractor (REC)
Electrical and Mechanical Services Department (EMSD)
Under the Electricity Ordinance (Cap. 406), any person or company carrying on business as an electrical contractor undertaking electrical wiring work on fixed low or high voltage electrical installations must register with the Director of Electrical and Mechanical Services. The contractor must employ at least one registered electrical worker of the appropriate grade for the work undertaken. Registration is renewable and applications can be made in person, by mail or online.
Official sourceVerified 2026-07-14
Offshore profits claim feasibility
LowThis activity is inherently tied to Hong Kong as services are typically performed on-site for local clients. Contracts are usually negotiated and concluded within Hong Kong, making it difficult to qualify for offshore treatment.
Business registration wording
Suggested business nature for this activity
English
INTERCOMMUNICATION SYSTEM INSTALLATION AND MAINTENANCE
54/60 characters
Chinese 中文
閉路通訊系統安裝及保養
11/30 characters
Industry statistics
How large is this sector in Hong Kong?
Official figures are compiled at industry level. These are for Construction (F), the industry this classification belongs to.
27,200
Establishments (2023)
195,800
Persons engaged (2023)
C&SD Annual Survey of Economic Activities 2023Verified 2026-07-14
Standard compliance
Compliance every Hong Kong company shares
Beyond anything specific to this activity, every Hong Kong company handles two-tiered profits tax, the annual return (Form NAR1) within 42 days of its incorporation anniversary, audited accounts, MPF enrolment for staff, and a company secretary. Emerhub runs all of it on your behalf.
See the full Hong Kong compliance calendarFrequently asked questions
Do I need a license for installation?
Yes, you may need specific licenses depending on the nature of the intercommunication systems you install.
What are the tax implications?
Profits from this activity are subject to Hong Kong profits tax as services are performed locally.
Can I operate this business remotely?
While some aspects can be managed remotely, installation and maintenance typically require physical presence in Hong Kong.
Incorporate in Hong Kong
Starting a intercommunication system, installation and maintenance business in Hong Kong?
Emerhub incorporates your company, registers the business nature above with the IRD, files every licence application, and runs your company secretary and compliance calendar. You provide the documents; Emerhub handles every government interaction.
Start incorporation with Emerhub