Office Alarm Systems: Specification, Access Hours and Multi-Tenant Buildings

Office-specific design notes

• IT is the target: server/comms rooms get trap-zone treatment (contact + PIR minimum) — laptops sweep from desks, but the rack is the four-figure-plus loss with downtime attached
• Open-plan friendly detection: PIR placement respecting glass partitions, plants-on-radiators and cleaner patterns; dual-tech where aircon makes cheap PIRs dream
• Schedules as security: per-user codes bounded by time (cleaners' window, contractor days) with open/close reporting to catch the anomalies — the unsung feature offices underuse
• Entry routes engineered around the actual morning: first-in via rear fob door shouldn't cross three instant zones to a distant keypad — app disarm and route logic fix Monday sirens
• Panic provision where reception faces the public (see panic alarms guide) and lone-late-worker realities deserve thought
• Integration: alarm events triggering CCTV clips; access-control arming handshakes (last-out auto-prompt) on supported platforms

Multi-tenant buildings: whose alarm is it?

Serviced/multi-let buildings layer security: base-build (landlord) systems cover shells, risers and common parts; demise systems protect your floor/suite — and the interfaces matter: agree riser/shared-door zoning with building management, ensure your monitoring doesn't depend on a landlord broadband you don't control (4G paths solve), and document keyholder/response boundaries (building security may be first response — formalise or your ARC calls a desk that closed at 6). Fit-out timing is the cheap moment: cable while ceilings are open, even if devices follow. We work these arrangements constantly across multi-let offices — landlord consent letters and demise drawings included in the package.

Costs and the decision set

Fitted ranges: small suite (wireless Grade 2, app, keyholder monitored): £1,000–£1,800 + £150–£400/yr; full-floor wired/hybrid with server traps and schedules: £1,500–£2,500; HQ-scale and integrated estates: surveyed. The standard decision set mirrors small-business logic (read the insurance wording; monitored because empty-overnight; maintenance contracted) with office multipliers — staff churn argues for fob/app credentials over shared codes, hybrid working shifts schedules (review them annually — many offices still arm for 2019 patterns), and IT insurance/cyber policies increasingly note physical security of comms rooms. Survey with your fit-out plan and insurance schedule and the spec writes itself.