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Fire Alarms — Expert Guide

How to Compare Fire Alarm Quotes: The Compliance Checklist

By the DC Fire & Security engineering team — installing and maintaining fire and security systems since 2010. Updated June 2026.

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Quick answer

Comparable fire alarm quotes state the BS 5839 category being designed to (L1–L5/M/P), name the panel and every device, include design/installation/commissioning certificates, zone plan and cause-and-effect documentation, and say who carries design responsibility. A cheaper quote omitting category or commissioning isn't cheaper — it's a different (non-compliant) product.

The checklist that exposes real differences

  • 1. Category in writing: 'to BS 5839-1 Category L2' — a quote without a category is a quote without a design
  • 2. Design responsibility named: who signs the design certificate (and their competence basis) — fire alarms carry legal liability, not just labour
  • 3. Device schedule: panel model, every detector/call point/sounder by location and type (heat vs optical vs multi placed deliberately)
  • 4. Coverage logic visible: sounder levels (65dB general / 75dB at bedheads), detector spacing assumptions — at least referenced
  • 5. Commissioning to BS 5839-1 Section 39 itemised — 'install only' quotes leave you buying certification separately at surprise prices
  • 6. Certificates listed: design, installation, commissioning — plus zone plan and log book at handover
  • 7. Cause-and-effect: door holders, AOVs, plant shutdowns documented where interfaces exist
  • 8. Cabling spec: FP200-class fire-rated cable, fixings to current standards (the post-Grenfell metal-fixings point)
  • 9. Monitoring/servicing prices separated and optional, not bundled-and-buried
  • 10. The company: third-party certification status for fire detection (BAFE SP203/equivalent bodies) and references in comparable buildings

Why fire quotes diverge more than security quotes

Two fire alarm quotes can differ 2–3× while both being 'for the building' — because they're often for different categories (an M-plus-escape-routes L4 against a near-L1), different responsibility models (designed system vs 'we fitted what you asked for', which transfers liability to you), and different ends (commissioned-and-certificated vs powered-up-and-left). The Fire Safety Order makes the responsible person liable for adequacy: the documentation trail — category decision flowing from your fire risk assessment, certificates, zone plan — is what stands between you and that liability when an inspector or insurer asks. Cheap without paperwork is expensive with consequences.

Comparing fairly and choosing

Level the field: send each bidder the same brief — the fire risk assessment's detection requirement (or ask each to state the category they propose and why), building drawings, and interface list (door holders, AOVs, kitchen suppression). Then compare like-for-like: same category, same certification deliverables, five-year view including the twice-yearly servicing (£200–£900/yr by size — see the servicing guide). Weight the soft signals: surveyors who measure and ask about sleeping risk vs drive-by quoters; willingness to coordinate with your assessor; takeover honesty about your existing system. We quote to this checklist structurally — and we'll annotate competitors' quotes against it without drama, because the gaps are usually visible in one read.

Frequently Asked Questions

Should the installer or my fire risk assessor choose the category?
The assessment drives the requirement; the designer translates it into a compliant category and layout. Good practice is dialogue between both — what you shouldn't accept is a category chosen by neither, i.e. by the price.
What does BAFE certification mean on a fire quote?
BAFE SP203-1 (and equivalent third-party schemes) certificates the company's design/installation/commissioning competence for fire detection — the fire-side analogue of SSAIB/NSI in security. It's a meaningful filter; verify scope on the registers.
Is 'supply and install to existing design' ever okay?
Where a genuine compliant design exists (consultant-led projects), yes — responsibility is then explicit. The danger zone is no-design-anywhere installs masquerading as someone else's responsibility.
How long should a fire alarm quote take to produce?
After a proper survey: days, not weeks, for typical premises. Instant quotes for category-level systems without a walk-round are guesses wearing numbers.

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