The Randburg Airbnb Host's Guide to Locks

Physical key handovers are a nightmare for short-let hosts. Smart locks solve it.

Time-boxed codes

One code per booking, auto-expiring at checkout.

Cleaner codes

A separate long-life code you control.

Owner override

Always keep a mechanical key with a trusted local.

The maths that changes everything

A family home issues keys perhaps a handful of times a decade. A short-let property hands access to a new household every few days. Over two years that is a hundred separate people who have held the means to get in, and unless the arrangement was designed for it, a proportion of them still can — because a metal key handed back is not proof that a metal key was not copied. The article on smart locks and load-shedding covers neighbouring ground in more detail than there is room for here.

That is not a comment on guests, the overwhelming majority of whom are exactly who they said they were and have no interest in the property after checkout. It is simply that the arrangement was designed for a household of four and is being asked to serve a hundred, and the failure mode is quiet: nobody ever discovers that a key was copied, because nothing happens on the day it would show. The article on whether biometric locks are secure covers neighbouring ground in more detail than there is room for here.

So the first question for any host is not what lock to buy. It is: how does access get withdrawn at the end of a stay, reliably, without anybody having to remember? Every sensible answer to that involves credentials that expire rather than metal that is handed back, and every unsatisfactory one involves trusting a process that depends on somebody being conscientious at ten on a Sunday night.

Codes that expire are the practical answer

A keypad or smart lock that issues a code per booking, valid only for the dates of the stay, solves the problem structurally rather than procedurally. Nobody has to remember to do anything, no metal changes hands, and access ends by itself. For most short-let properties that single change is worth more than everything else on this page combined. Being a Randburg locksmith means access on a short-let property is familiar ground rather than an unusual request.

It also removes the key handover, which is the second-largest practical irritation in short letting. No lockbox on a wall telling everybody there is a key in it, no meeting a guest whose flight is delayed, no set posted through a neighbour. Guests arrive when they arrive and let themselves in, which is what most of them wanted in the first place.

The caveats are the ones that apply to any electronic lock in this country. Batteries fail, and they fail quietly. There must be a genuine override arrangement and somebody nearby who can use it. And the code list needs occasional review, because hosts accumulate permanent codes — a cleaner, a handyman, a relative — in exactly the way households accumulate keys.

The lockbox question

Key lockboxes are common because they are cheap and require no electronics, and they have a specific weakness: they advertise. A box mounted beside a door announces to anybody passing that the property is let, that there is a key in that box, and that the owner is not there. In a suburban street that is a considerable amount of information to publish permanently. Our residential locksmith work is one of seven services covered by the same team, and it has a page of its own.

If a lockbox is genuinely the only option — an older door that will not take a keypad, a body corporate that will not permit one, a property where power is unreliable — then position matters enormously. Out of sight of the street, not on the door it opens, and with a code that changes rather than one that has been the same since the listing went live.

What is not acceptable is the arrangement plenty of properties end up with: a permanent code, a box in plain view, and a key inside that opens everything on the property. That combination has effectively published a house key to everybody who has ever stayed and everybody who has ever walked past and paid attention.

What the guest should and should not be able to open

A guest needs the entrance to the let space and the boundary gate. They do not need a locked owner's cupboard, a garage, a store, a flatlet at the back, or the connecting door to the part of the house you still use. Where a property is partly let, that separation should be physical and deliberate rather than a matter of politeness and a closed door.

This matters most on the arrangements that grow organically — a room let in an occupied house, a garden cottage on a family stand, a converted outbuilding. In each case there is a boundary that exists in the owner's mind and may not exist in the hardware. Making it real is usually a small job and it removes an entire category of awkwardness. Readers who came here for emergency locksmith work will find it set out properly on its own page.

It also matters for what stays behind. Where an owner keeps possessions on a let property, they belong behind something that is genuinely closed rather than in a cupboard with a privacy latch. That is not distrust of any particular guest; it is the same reasoning that puts a lock on a locker in a shared building.

Wear, and why short-let hardware ages faster

A front door in a family home is operated by people who know it. A short-let entrance is operated by strangers, at night, with luggage, often after a long journey, frequently by somebody who has never met that particular door. Hardware in that situation takes more abuse in a year than a domestic door takes in five, and it fails accordingly.

Which means a short-let property needs its entrances treated more like a small business than a house: mechanisms checked periodically, anything that has started needing a knack dealt with promptly, and hardware chosen for the number of operations rather than for looks. A door that requires a particular technique is a guaranteed midnight phone call from somebody who does not have it. The safe locksmith page explains how that part of the work is quoted and carried out.

The economics favour prevention heavily here, because the cost of a failure is not just the lock repair. It is a guest standing outside at eleven at night, a review, and possibly a refund. Very few maintenance items on a let property have that kind of leverage, and it costs almost nothing to stay ahead of.

Getting out, and telling people how

Guests do not know your house. On a property with security gates, a passage gate, or bars — which is a great deal of Randburg housing — that matters more than hosts tend to think. Somebody who has to leave in a hurry, at night, in an unfamiliar building, needs to be able to do it without hunting for a key in a drawer they have never opened.

So the practical rule is that every key needed to get out lives beside the door it opens, within reach of somebody standing there, and the house information mentions where. That is free, it takes ten minutes to set up, and it is the single most useful safety measure a short-let host in this country can put in place.

It also solves a smaller but common irritation: guests who cannot work out how to leave the property and ring the host about it. A short note in the welcome information about which door to use, where its key lives and how the gate opens prevents a surprising proportion of the messages hosts get in the first hour of a stay.

A sensible setup, start to finish

Codes that expire on the guest entrance. A physical separation between the let space and anything of yours, made real in hardware rather than in politeness. Every exit key beside its own door, mentioned in the house information. A periodic review of any permanent codes — the cleaner, the handyman, the relative who helped one weekend two years ago. We keep a full account of commercial locksmith work separately, since it raises its own questions.

Add to that a maintenance habit: work the entrance mechanisms occasionally, deal with anything that has started sticking, and change electronic batteries on a date rather than on a warning. Then a local number you can actually ring at eleven at night, because that is when this goes wrong and a guest standing outside is not a problem that keeps until morning.

None of that is elaborate and none of it is expensive relative to what short letting earns. What it does is convert the recurring failure — an unknown number of people holding access to a property you are not living in — from something you hope about into something you have decided. That is the whole of the difference.

What a well-run short-let property looks like

Access that expires on its own, a physical separation between the let space and anything of yours, every exit key beside its own door, and a periodic review of any permanent codes. That is the whole arrangement, it can generally be set up in a single visit, and it costs very little against what short letting earns.

Add a maintenance habit to it, because guest entrances wear faster than anything else on a domestic property. Work the mechanisms occasionally, deal with anything that has started sticking rather than waiting, and change electronic batteries on a diary date rather than on a notification. A door that requires a knack is a guaranteed midnight message from somebody who does not have it.

Then keep a local number for the hours when this actually goes wrong, which is late and at weekends. The cost of a failure on a let property is never just the emergency locksmith call — it is a guest standing outside, a refund and a review, which is why prevention pays better here than almost anywhere else.