By the DC Fire & Security engineering team — installing and maintaining fire and security systems since 2010. Updated June 2026.
A single-door Paxton Net2 system installs from £695+VAT — controller, reader, exit button, lock hardware and commissioning. Additional doors run £500–£900 each depending on lock type (maglock vs strike vs handle), cabling distance and door construction. Software is free (no licences), fobs £3–£8 each, and running costs are essentially maintenance-only — Net2's enduring appeal.
Scaling economics: controllers handle doors in pairs/quads, PSUs share, and cabling mobilises once — so doors two-through-six typically land £500–£800 each against the first door's £695+, with gates, barriers and intercom-integrated entrances pricing individually (gate hardware dominates those). A typical small office (front door + server room + rear exit): £1,700–£2,500 installed. A 10-door multi-tenant building: £5,000–£8,000 plus any intercom works. Fobs/cards: £3–£8 encrypted; software: Net2 Lite free (covers most), Pro features for larger estates — no per-door licences, which is the 5-year cost argument Net2 wins against cloud rivals (model it per the platform guide).
Net2's operating budget is gloriously dull: no licences, fob top-ups as staff churn, annual maintenance recommended (£150–£400/yr small systems — covering controllers, PSU batteries ~4-yearly, lock wear, release testing including the fire interface, and database backups), and component lifespans of 10–15 years on controllers with locks wearing per traffic. Failure modes to budget around: PSU batteries (the silent one — test at service), maglock armature wear on slamming doors (closer adjustment is the cheap fix — the closers guide applies to access doors too), and reader weathering on exposed entrances (£100–£200 swaps). Migration paths protect the investment: Net2 estates upgrade to Paxton10 reusing most hardware — buying Net2 today isn't a dead end, which is precisely why it remains the UK benchmark.
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