Hong Kong law

Hong Kong FS251 certificate: annual inspection & forms

FS251 is Hong Kong’s fire installation certificate. Check the 12-month inspection rule, due dates, official forms, equipment codes and online submission.

Last reviewed:11 October 202612 min readPublished by Chung Kwun Cypress Fire Engineering Group
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FS251 at a glance

How often is fire inspection required?

Installation and equipment owners must keep equipment working efficiently and arrange a registered contractor’s inspection at least every 12 months under Cap. 95B Regulation 8.

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How is the FS251 due date calculated?

Check Part 1: the due date normally falls one year after work completion unless FSD specifies otherwise. A later signature date does not extend the inspection interval.

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When should the certificate arrive?

Cap. 95B Regulation 9(1) requires the contractor to issue the certificate and send FSD a copy within 14 days after completing the relevant work.

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Which FS251 form is used now?

Since 1 July 2026, contractors must prepare and submit FS251 through the designated online system. The new certificate has an anti-counterfeiting QR code at the bottom left.

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Choose an official FSD document

Each link opens the original on the Fire Services Department website in a new tab. For a PDF, use your browser’s download or print button.

  • Official page

    FS251 online submission system and user guidance

    Use FSD’s official entry page for the current online service and guidance. A contractor registered for the relevant work prepares and submits the certificate after completing that work.

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  • PDF

    FS251 form sample, completion notes and equipment codes

    Circular 5/2025 includes the form and completed samples in Appendices I–II, field guidance in Appendix III and equipment codes in Appendix IV. Read it with Circular 4/2026 for current submission arrangements.

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  • PDF

    2026 online submission and QR-code requirements

    Circular 4/2026 explains the rules from 1 July 2026 and the new anti-counterfeiting QR code. A downloaded paper sample does not replace submission through the designated online system.

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Quick answers

How do I get an FS251 certificate?

Appoint a fire service installation contractor registered for the relevant work. After completing the inspection or work, the contractor prepares and submits FS251 and gives a copy to the person who commissioned it.

Is FS251 valid for one year? Must inspection be completed before expiry?

For annual inspection, check the Due Date in Part 1. Owners must have installations inspected by a registered contractor at least every 12 months. The due date normally falls one year after work completion unless FSD specifies otherwise; signing later does not extend it. Read Part 2 installation or repair records according to their own work scope.

What should I do if the annual inspection is overdue?

Contact an appropriately registered contractor promptly and provide the latest certificate, equipment list and known defects. Explain any faults or shutdowns and follow up the necessary repairs and notifications. Booking alone does not meet the inspection or working-order requirements.

Where can I download the FS251 form?

The official-document links on this page open Circular 5/2025 with the form sample, explanatory notes and code list. Since 1 July 2026, contractors must prepare and submit FS251 through the designated online system. The sample is for reference; filling it in yourself does not produce an annual-inspection certificate.

What does an FS251 code mean?

FS251 is the form reference. Equipment codes within it identify installation types, such as 13 for a fire alarm system, 24 for a portable fire extinguisher and 28 for a sprinkler system. The full list is in Circular 5/2025 Appendix IV. Check each code with its location and work scope.

How do I verify an FS251 QR code?

Scan the anti-counterfeiting QR code at the bottom left and compare the official verification result with the certificate. Report suspicious results, or a certificate issued on or after 1 July 2026 without that code, to FSD.

Can I ask without a previous FS251?

Yes. Start with the address, premises type and service needed. An old certificate, equipment list or photos can follow if available. The quotation and inspection scope still need to be checked.

Does the FS251 price include repairs?

Check the quotation. Inspection, repairs, parts and retesting may be charged separately. Ask what is included, what costs extra and how repairs will be arranged if the inspection finds a problem.

Need help arranging your inspection?

Start with the premises type, district and due date. If available, prepare the previous FS251, equipment list, access restrictions and any defect report. Our office can clarify inspection, repairs, retesting and document scope before a quotation is agreed.

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Legal information

This material is provided for general fire-safety education only. It is not legal, regulatory, engineering or licensing advice. Requirements depend on the premises, building use, approved plans, licence conditions, statutory directions and current law. Obtain advice from the relevant authority and appropriately registered professionals for your specific premises.

What is an FS251 certificate?

FS251 is the Certificate of Fire Service Installations and Equipment. After completing applicable installation, maintenance, repair or inspection work, a registered fire service installation contractor issues the certificate to the person who instructed the work and forwards a copy to FSD within the prescribed period under Cap. 95B.

When the certificate arrives, check the equipment list, locations, work, completion date and contractor registration. New buildings and other projects may need additional forms; ask the contractor to list the documents required for your work.

How to arrange an FS251 inspection in four steps

Start with the address, premises use and whether you need an annual inspection, repairs or licensing documents. The contractor can then confirm the work, access arrangements and documents needed.

Share the records you have when you enquire; an old certificate or equipment list can follow if needed. Before booking, confirm who will commission the work, arrange access and approve any additional repairs.

  • Provide the address and use, such as an office, restaurant, shop or common building area.
  • Share an existing certificate, equipment list, licence requirements or defect report if available.
  • Confirm the included tests and any separate charges for repairs, parts, retesting or out-of-hours access.
  • After the work, check the certificate, equipment condition and outstanding actions; retain the records and plan the next inspection.

2026 changes: online submission, QR codes and official forms

FSD Circular 4/2026 requires contractors to prepare and submit FS251 through the designated online system from 1 July 2026. The transition from paper and older electronic forms has ended. Contractors should now follow FSD's online submission guidance.

The new certificate has an anti-counterfeiting QR code at the bottom left for checking its details. Report suspicious verification details, or certificates issued on or after 1 July 2026 without that code, to FSD. Official circulars, form samples and explanatory notes are linked below.

The 14-day requirement starts when the work is completed

The registered contractor must issue FS251 to the person who commissioned the work and forward a copy to FSD within 14 days of completing it. When booking, confirm the expected completion date and how you will receive the certificate.

If the inspection finds defects, ask the contractor to explain the equipment's condition, proposed repairs and any retesting needed. Agree the work and costs before arranging access, then keep the repair and retest records.

FS251 validity and expiry: the 12-month annual inspection rule

Cap. 95B Regulation 8 requires installation and equipment owners to keep equipment working efficiently and have it inspected by a registered contractor at least every 12 months. Arrange completion by the Part 1 due date, allowing time for access, tests and defect follow-up.

Circular 5/2025 Appendix III says the due date normally falls one year after work completion unless FSD specifies otherwise. For example, if the contractor signs the certificate two weeks after the inspection, plan the next inspection from the actual completion date and the Part 1 due date. Do not restart the interval from the signature date.

The due date and current equipment condition need separate attention. Faults arising before the due date still need action. Keep service reports, defect lists, repair records and equipment lists together; holding a certificate alone does not establish that every installation is working today.

How to read FS251: Parts 1, 2 and 3

Check the address, contractor registration and equipment locations, then read the scope in each part. A certificate recording a repair to selected equipment does not replace annual inspection records for other installations.

Use the form samples and explanatory notes in Circular 5/2025 to identify the fields. Where Part 3 records defects, ask the contractor to explain their effects, repairs and retesting, and retain the follow-up records.

How to read FS251: Parts 1, 2 and 3
Certificate partWhat to check
Part 1: annual inspectionInstallations, locations, condition, completion date and due date.
Part 2: installation, maintenance, repair or inspectionWork actually carried out, equipment covered, location and completion date.
Part 3: defectsMissing or faulty equipment, defect comments, remedial work and relevant notification details.

FS251 equipment codes: alarms, hose reels, extinguishers and sprinklers

FS251 is the form reference; each equipment entry also uses an installation code. These common examples come from Circular 5/2025 Appendix IV. Refer to the original FSD document for the complete list.

A code alone does not establish that every installation in a building was inspected. Read it with the equipment name, location, completion date and condition, and compare the equipment list with the agreed work scope.

FS251 equipment codes: alarms, hose reels, extinguishers and sprinklers
CodeInstallation type
11Emergency lighting
12Exit sign
13Fire alarm system (MFA)
15Fire detection system
16Fire hydrant / hose reel system
23Hose reel
24Portable fire extinguisher
28Sprinkler system

What if the inspection identifies further work?

Share the defect report, equipment locations and recent drawings with the contractor. Distinguish local repairs, replacements and layout changes. Chung Kwun and Cypress can review the tests, work and documentation within their respective scope.

For a building or institutional enquiry, include the programme, access restrictions and tender deadline. Compare the inspection, additional repairs, retesting and documentation as separate parts of the quote.

What work does FS251 cover?

FS251 records the fire service installations and work listed on the certificate. Escape routes, fire-resisting construction, Fire Safety Directions, licence conditions and alteration approvals need to be checked against their own requirements and documents.

If the certificate or service report lists a fault, isolation or outstanding work, ask the contractor to explain the effect and recommended action. The person responsible should arrange the repairs and keep the completion and retest records.

How should you keep certificates and repair records?

File the original certificate or an electronic copy by property address and date, together with equipment lists, service reports and repair records. Keep the contractor's contact details, next inspection deadline and outstanding work easy to find.

When ownership, management or tenancy changes, hand over past certificates, equipment lists, repair records and outstanding work. Explain any work already booked and inspections coming due to the person taking over.

Practical checklist

  • Check property name, address and certificate number
  • Check contractor name, registration number and class
  • Confirm work type, installations, locations and completion date
  • Read condition comments and appended equipment list
  • Keep repair and retest records for each defect
  • Track licences, directions and building requirements separately
  • Include history and open actions in management handover

When to call a registered contractor

Ask the original contractor or another appropriately registered contractor when certificate details are incomplete, scope is unclear or equipment is defective.

  • Address, date, equipment or registration information conflicts
  • The due date is approaching and inspection has not been arranged
  • The certificate or report identifies a defect, isolation or follow-up work

Official sources

The official documents below provide the full requirements and any updates.

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