Smart locks in rentals: consent first, hardware second
In apartment towers there is a second gatekeeper: building management. Entrance doors in towers are usually fire-rated, and some managements prohibit any modification to them, full stop. Retrofit smart locks that clamp over the existing thumb-turn on the inside of the door — no drilling, no cylinder change — exist precisely for this situation, and a good installer will steer tenants toward them. Fitting one is quick work, typically at the lower end of the AED 200–450 install-only band.
Reversibility has a price worth paying. A tenant choosing between a AED 250–400 retrofit unit and a AED 700–1,000 full replacement lock should weigh not just today's cost but the exit cost: the retrofit comes off in ten minutes when you move; the replacement means a refit visit, possible touch-up work, and a device that may not suit your next door at all.