Supplementary Legal Guide

Fire Service Act Occupancy Classification: Category 15 (Offices)

Target Facilities Included in Category 15

• General Corporate Offices, Administrative Buildings, Bank Branches[cite: 27]
• Photo Studios, Hair & Beauty Salons[cite: 27]
• Sports Facilities & Fitness Gyms (without spectator seating)[cite: 27]
• Residential Model Homes & Automobile Showrooms[cite: 27]

Primary Fire Protection Requirements for Category 15 Standalone Facilities

Installation requirements for core fire protection equipment are triggered by building gross floor area and floor levels[cite: 27]:

Equipment Type	Primary Installation Thresholds for Category 15 (Offices)
Fire Extinguishers	Gross floor area ≥300 m² (lowered to ≥50 m² for basement, windowless, or 3rd+ floor areas)[cite: 27]
Automatic Fire Alarm Systems	Gross floor area ≥1,000 m² (lowered to ≥300 m² for basement, windowless, or 3rd+ floor areas)[cite: 27]
Indoor Fire Hydrants	Gross floor area ≥700 m² to 3,000 m² (varies depending on structural fire resistance and interior finish)[cite: 27]
Fire Sprinkler Systems	Mandated for 11th floor and above, or basement areas with total floor area ≥2,000 m²[cite: 27]
Exit & Directional Signs	Mandated for basements, windowless floors, and 11th+ floors (standard ground floors allow basic signage)[cite: 27]
Emergency Alarm Appliances/Systems	Mandated for facilities with maximum occupant capacity ≥50 persons[cite: 27]

Key Compliance Considerations for Office Real Estate Operations

1. Conversion to Mixed-Use Buildings (Category 16-A) via Retail/Dining Tenants:
   If a single restaurant (Category 3) or retail store (Category 4) moves into a building previously occupied solely by Category 15 offices, the entire building is reclassified as a "Mixed-Use Specified Fire Prevention Object" (Category 16-A)[cite: 27]. This reclassification frequently forces retroactive, expensive fire alarm system upgrades building-wide[cite: 27].
2. Office Partitioning & Layout Renovation Risks:
   Constructing new enclosed rooms (conference rooms, executive suites) during office renovations creates unmonitored dead zones beneath ceiling fire sensors or sprinklers, mandating sensor relocation or auxiliary head additions[cite: 27].