Burglar Alarms for Rental Properties: A Landlord's Buying Guide
By the DC Fire & Security engineering team — installing and maintaining fire and security systems since 2010. Updated June 2026.
Quick answer
Alarms aren't legally required in standard lets, but they pay where voids, high-crime postcodes, HMOs with shared doors, or insurer conditions exist. Fit wireless Grade 2 (from £595/property), standardise one platform across the portfolio, manage codes per tenancy (reset at changeover like keys), and put servicing on the same annual rhythm as gas checks. Empty properties between lets are when alarms earn hardest.
Where rental alarms actually pay
- Void periods: empty properties attract break-ins, squatting and stripping (boilers, copper) — app-monitored alarms during voids are the single strongest use-case
- Insurance: landlord policies for certain postcodes/property types carry alarm conditions or meaningful discounts — certificated systems unlock both
- HMOs: shared front doors and stranger-flow make door contact + communal PIR coverage valuable (configured around tenant movement patterns — see design note below)
- High-value lets: furnished/premium properties where contents and finish justify it
- Tenant retention: security-conscious tenants (and their insurers) value it — a cheap differentiator in listings
- Skip where: low-risk areas, long-stable tenancies and tight margins — honesty over blanket fitting
Design and management for tenanted reality
Tenancy-proof design: wireless (no decoration battles), pet-immune PIRs by default (tenants acquire pets), simple part-set for night use, internal sounder + app alerts to both tenant and (with transparency) your agent for unset-property alerts during voids. Code discipline mirrors keys: per-tenancy user codes reset at changeover (30-second app/engineer task), master/engineer codes never shared, event log available if disputes arise — covered in the tenancy pack with a one-paragraph 'alarm provided, test monthly, report faults' clause. HMO nuance: communal-area detection must respect 24/7 tenant movement — door contact + entrance camera-PIR verification beats motion-flooding shared corridors.
Portfolio buying: standardise and contract
The maintenance economics flip on standardisation: one platform (Enforcer or AX Pro across the book) means one app estate, shared spares, predictable engineer time and bulk-buy sense — we run exactly these portfolio arrangements for landlords and agents across our area: fit-out from £595/unit at volume, annual service rounds aligned with your gas/EICR calendar, changeover resets on request, and one invoice. Add the obvious pairings while wired in: doorbell/entrance cameras on HMOs, smoke/CO compliance checks on the same visits (see our landlord alarm rules guide) — windscreen time is the cost; bundling is the saving.
Frequently Asked Questions
Who pays for alarm maintenance — landlord or tenant?
Can tenants demand the alarm be removed or disabled?
Do alarms reduce landlord insurance premiums?
What about alarms left by previous owners in newly bought rentals?
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