Engineering & design
Fire installation alterations: drawings, FS251 and FSI/314 documents
Moving sprinklers, hose reels or other fixed equipment during a fit-out calls for a review of drawings and scope. Understand what the documents do before coordinating the work.
If there is fire or immediate danger
Leave the premises using a safe route and call Hong Kong emergency services on 999. Do not remain to investigate or use a lift.
Legal information
This guide helps with initial planning; it is not legal advice or an engineering assessment of your premises. Confirm the requirements against the use, approved plans, licence conditions, written directions and current official documents.
Quick answers
Should documents be checked for moving only a few sprinkler heads?
Yes. A small number can still change the layout. The contractor should confirm drawing, testing and document requirements for the actual work.
Identify what is changing
Replacing a faulty part and changing an installation layout may require different work and documentation. Mark proposed changes on the existing plan and identify changes to partitions, ceilings, use or fixed equipment positions.
Bring the fire contractor into the discussion before the fit-out is finished. Sprinkler coverage, hose-reel positions and interfaces with other systems can affect design and construction arrangements.
Certificates and drawings serve different purposes
FSD's FAQs explain that layout or fixed-equipment changes can require the relevant drawings and FSI/314 documents as well as FS251. Having an FS251 alone does not establish that all alteration submissions are complete.
The form depends on the work and premises. FSD lists FSI/314 and 314A alongside forms for commercial, composite or domestic, and industrial buildings. Have the responsible contractor confirm the current documents and submission sequence.
Keep design, construction and handover aligned
Share existing and proposed drawings, management requirements and relevant notices. The quote should identify responsibility for drawings, site work, testing and document follow-up.
If positions change during construction, ask the relevant teams to review the change. At handover, collect drawings reflecting the installation, test records and applicable certificates, with a list of outstanding documents.
Practical checklist
- Existing and proposed drawings
- Premises use and management requirements
- Responsibilities for drawings, work and documents
- Access, shutdown and handover dates
- Agree current drawings and document handover
Discuss fire installation alterations
Send the existing and proposed plans to Chung Kwun or Cypress so we can review the scope, quotation and coordination needed.
- Review site and drawing scope
- Arrange alteration work and testing
- Follow up applicable documents
Official sources
The official documents below provide the full requirements and any updates.
Related reading
Hong Kong FS251 certificate: inspection, forms and online submission
Understand FS251 annual inspections, the 14-day issue and copy-submission requirement, and the 2026 online and QR-code changes before requesting an inspection quotation.
Read articleSprinkler exemption applications: voids, canopies and supporting information
A void or canopy is not automatically exempt from sprinklers. Prepare dimensions, materials, use and drawings, and distinguish an application from permission to alter an installation.
Read articlePreparing fire safety improvement works for inspection and handover
Construction, testing, document submission and authority inspection are separate stages of improvement work. Use this guide to organise the handover and outstanding actions.
Read articleRELATED SERVICE
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