A key safe is a lockable box, usually mounted outside, that holds a spare house key behind a code or a keyed lock so trusted people can get in when you are not home. Most homeowners fit one for family, tradies, carers or guests, and a good unit removes the need to hide a key under a pot.
This guide covers key safe types, how a key lock box differs from a key box, what a safe install costs in Sydney, how to choose one and where to mount it. It also links to our key cutting guide and our explainer on whether lock picking is legal in Australia.
Key points
- A key safe stores a spare key behind a code or key, so you can share access without cutting extra copies.
- Pick a solid metal body, a cover over the dial or keypad and a fixing method that suits your wall, because weak mounting defeats the whole box.
- Renters and apartment owners need the landlord’s or owners corporation’s permission before drilling a box into a wall.
- Change the code whenever a tradie, carer or guest finishes, and ask a licensed locksmith to fit the box if the wall is brick or render.
What is a key safe?
A key safe is a small, hard-wearing box that locks a spare key away from view. You fix it to a wall, gate post or meter box, or hang it from a door handle or fence.
- Body: solid cast metal resists a hammer and a pry bar far better than thin pressed steel or plastic.
- Access method: a push-button code, a dial or a small key lock opens the door of the box.
- Weather protection: a cover or gasket stops rain and salt air from seizing the buttons, which matters near the coast.
- Fixing: screws into brick, concrete or solid timber hold the box; a hanging shackle suits rentals where drilling is not allowed.
- Capacity: check that the box fits a full key, a remote and a fob, not just a single flat key.
- Code length: a longer code gives more combinations, but always avoid birthdays, house numbers or repeated digits.
Types of key safe and key lock box
The right box depends on who needs access and whether you can drill the wall.
| Type | Best for | Strength | Price band |
|---|---|---|---|
| Wall-mounted push-button key safe | Family, carers and tradies who need regular access | High when fixed to brick or concrete | Low to mid |
| Wall-mounted dial key lock box | Long-term outdoor use in wet or salty conditions | High with a cast metal body | Low to mid |
| Hanging key box (shackle) | Rentals, short stays and temporary access | Moderate; limited by what it hangs from | Low |
| Padlock-style key box | Gates, sheds and building sites | Moderate; depends on the shackle | Low to mid |
| Electronic or smart key box | Short-stay rentals with many guests | Moderate to high; depends on the unit | Mid to higher |
Price bands are relative; get itemised quotes before you buy.
Key safe for different homes and uses
Where you live and who needs a key changes the best choice. Each situation below suits a different box and a different mounting spot.
- Family home: a wall-mounted push-button box near the side door lets relatives in without handing out copies that get lost.
- Carers and home help: choose a unit with a code you can change, and reset it whenever the carer or service changes.
- Short-stay rentals: a hanging key box is easy to remove between hosts, though a smart lock avoids the physical key altogether.
- Tradies and builders: a padlock-style key box on the gate or fence gives contractors access without leaving the house open.
- Rentals and apartments: ask the landlord or strata committee before drilling common property, and keep written approval.
- Holiday homes: a cast metal box fixed with security screws holds up to salt air better than thin steel in coastal suburbs.
Key safe cost in Sydney
The box itself is usually a modest purchase, but fitting, re-keying and call-outs add up. These Sydney prices are from October 2026, including GST.
| Job (Sydney, Oct 2026) | Price range | Typical |
|---|---|---|
| Key cutting, standard key | $6–$34 | $14 |
| Re-key, per lock | $52–$140 | $75 |
| Deadbolt installation | $170–$460 | $290 |
| House lockout, business hours | $140–$345 | $205 |
| After-hours or emergency lockout | $230–$575 | $320 |
| Safe opening or combination reset | $230–$690 | $400 |
| Smart or digital lock, supplied and fitted | $345–$920 | $600 |
- Wall type: drilling brick or concrete takes longer than fixing to timber, so masonry installs usually cost more.
- Box quality: a cast metal body costs more than pressed steel but resists forced removal for far longer.
- Extra keys: each spare you place in the box needs cutting, so budget about $14 per key at typical rates.
- Re-keying: if the box will hold the only key, re-key the lock first at about $75 so lost copies stop working; see rekey vs change locks.
- Call-out timing: after-hours, weekend and public-holiday visits carry a surcharge that varies by locksmith.
- Bundled jobs: fitting the box during a lock upgrade saves paying for travel twice; see our locksmith cost in Sydney guide.
Key safe pros and cons
Convenience comes with some exposure. Weigh both lists before you fit one.
Pros of a key safe
- Shared access: several trusted people can use one code, and you can change it without re-cutting keys.
- Fewer lockouts: a spare key on site means you avoid a business-hours lockout fee of about $205.
- No hidden keys: a proper box beats a key under a pot, which is the first place anyone checks.
- Easy audit: you decide when the code changes, so access ends the day a job finishes.
- Weather resistant: a good cover keeps buttons and dials working through summer storms and salt air.
- Quick install: most boxes fit in under an hour, which suits a single visit alongside other lock work.
Cons of a key safe
- Code sharing: every person who knows the code is a risk, and codes get passed on without you knowing.
- Visible target: a box on the wall tells passers-by there is a key inside, so choose a screened spot.
- Weak fixing: a box screwed into plasterboard or a rotten frame can be pulled off by hand.
- Insurance questions: some insurers ask how spare keys are stored, so check your policy wording.
- Wear and weather: cheap boxes can seize or the code can stick, which locks everyone out including you.
- Rental limits: a drilled box on a rental or strata wall may breach lease or by-law rules without approval.
How to choose a key safe
Work through this checklist in order; renters should start at item five.
- Decide who needs access: list the family members, carers and tradies, and note whether each needs access daily or once.
- Pick the access method: a push-button code suits shared use, a dial suits wet weather and a keyed box suits one trusted person.
- Check the build: choose a solid cast body with a hardened shackle or fixing plate rather than a thin plastic casing.
- Match the key: confirm the box takes your actual key, plus any fob or remote you plan to store.
- Get permission: rentals and apartments need written approval before drilling into a wall, door frame or common property.
- Plan the position: pick a spot that is out of direct view from the street but easy to reach, ideally under cover.
If you are weighing a physical box against keyless entry, compare it with a smart lock in our smart locks guide.
Key safe installation and maintenance essentials
Fitting and care matter as much as the box you buy. Follow these steps in order.
- Check the surface: solid brick, concrete or hardwood hold fixings; plasterboard, thin render and rotten timber do not.
- Use proper fixings: match the screws and anchors to the wall type, and use tamper-resistant screws where the box allows.
- Set your own code: change the factory default straight away, and avoid birthdays, repeated digits and house numbers.
- Test before you rely on it: open and close the box several times, then try the key in the lock it is meant for.
- Keep the box dry: fit the weather cover, and spray the mechanism lightly with a lock-safe lubricant a couple of times a year.
- Review and update: change the code after each contractor, check the fixings at every season change and replace a box that sticks.
Key cutting and spare keys for your key safe
A badly cut copy that sticks in the lock leaves a carer or tradie stranded. Our key cutting guide explains what you can copy at a counter and what needs a locksmith.
- Cut from the original: copies of copies lose accuracy, and worn pin tumblers in older Lockwood sets amplify the problem.
- Test every copy: turn each new key in the lock a few times before you put it in the box.
- Label nothing: never tag the key with your address, in case the box is ever opened by the wrong person.
- Keep one spare elsewhere: leave a second key with a neighbour or relative in case the box itself fails.
- Re-key after losses: if a key is lost, re-key the lock rather than hoping nobody finds it.
- Use restricted keys: where many people hold copies, a restricted key system stops unauthorised duplication.
Key safe security and lock picking law
Burglars look for easy access, and a poorly mounted box is one. Our guide to whether lock picking is legal in Australia explains the law, and quality hardware resists attack far better than a hidden key does.
- Choose a screened position: mount the box where neighbours can see it but passers-by cannot easily reach it.
- Avoid the front step: a box on the front door frame advertises a key and sits in easy reach of a pry bar.
- Upgrade the door lock: a deadbolt at about $290 installed adds more protection than any hidden-key arrangement.
- Know your locks: compare the options in our types of door locks guide before deciding what the key opens.
- Check your car keys: never store a car fob in an outdoor box; read our car key replacement cost guide if one goes missing.
- Use a licensed locksmith: in NSW locksmiths work under a Class 2 security licence (Class 2C), so ask for the licence number.
Key safe FAQs
What is a key safe and how does it work?
A key safe is a lockable box that holds a spare key behind a code or key lock. You fix it to a wall or hang it from a handle, then share the code with trusted people. They open the box, take the key, and let themselves in.
What is the difference between a key lock box and a key safe?
The terms are used interchangeably. A key lock box is the common retail name, while key safe is the term most trades and care services use. What matters is the build quality, the access method and how securely the box is fixed to the wall.
Is a key box safe to leave outside?
A good key box is safe if it has a solid metal body, a weather cover and a strong fixing into brick, concrete or solid timber. Poorly mounted or plastic boxes can be pulled off by hand, so choose carefully and change the code regularly.
Can I fit a key safe on a rental or in an apartment?
Not without permission. In a rental, ask your landlord or agent for written approval before drilling into any wall or frame. In an apartment, the owners corporation controls common property, so a hanging key box may be the only option you can use.
How much does it cost to have a key safe installed in Sydney?
The box varies by brand and quality, so get itemised quotes. For context, a Sydney business-hours lockout typically costs about $205, a re-key about $75 per lock and key cutting about $14 per key. Masonry walls take longer than timber and add to the labour.
Can a locksmith open a key safe if I forget the code?
A licensed locksmith can often open a box you own after checking ID and proof of residence. Some models can be reset, while others must be replaced. Safe opening or combination reset in Sydney typically costs about $400 and ranges from $230–$690.
Getting a key safe installed in Sydney
We fit boxes on brick, concrete and timber across Sydney, re-key the lock they serve and set up codes before we leave. Book a licensed locksmith for an itemised quote, and bring any key you want copied.
