What is the average cost to change a door lock?

There is no single average, because "changing the lock" covers three different jobs. Swapping the cylinder in an existing euro-profile lock is the quickest and keeps the door furniture. Replacing the whole lockcase means matching the backset and the handle spacing. Changing to a different security grade or a multipoint lock is a different job again, sometimes with adjustment to the frame. Say which one you need, or send a photo of the lock edge, and the price follows from that.

How much does a locksmith charge for a lockout?

A lockout is priced on the callout plus what the opening takes, and the hour of day moves it more than anything else. The question worth asking before anyone travels is whether the callout still applies if the door cannot be opened non-destructively, and whether a new cylinder is included if the old one has to be drilled. Both are normal outcomes and both should be priced up front, not discovered on the doorstep.

Is it cheaper if the lock is drilled rather than picked?

No, it usually ends up more expensive, because drilling destroys the cylinder and a replacement has to be fitted and keyed on the spot. A non-destructive opening leaves the existing lock working. Drilling is the fallback when the lock is high-security, already damaged, or a key has snapped inside it. A quote that assumes drilling from the outset is quoting the harder outcome, so it is worth asking which one is expected.

Why do holiday lets change locks so often here?

Because keys accumulate. Nearly four in ten Algarve dwellings, 151,269 of 391,416, are second homes or seasonal use rather than main residences, and in Quarteira the figure reaches 58.6 per cent. Source: INE, Censos 2021, quadro Q304. A property that passes between guests, cleaners, gardeners and pool technicians accumulates copies nobody can account for, which is why a cylinder swap between seasons is routine maintenance here rather than a response to a break-in.

Does a locksmith need to see the lock before quoting?

For a lock change, a photo is usually enough: the edge of the door showing the faceplate, and the key itself. Those two show the lock type, the backset and whether it is a single cylinder or a multipoint. For a lockout there is nothing to photograph, so the useful details are the door type, whether the key is inside, and whether any window or second door is open.

What Does a Locksmith Cost in the Algarve? (2026)

Locksmith pricing looks opaque because two very different situations share one trade. One is an emergency where you are standing outside your own door. The other is planned work where you choose the time. They are priced on different things, and mixing them is why quoted figures vary so widely.

The two jobs behind the price

A lockout. You are outside, the lock is fine, and what you are paying for is attendance and technique. The variables are the hour, the distance, the lock’s resistance, and whether it can be opened without damage.
A lock change. Nothing is urgent. You are paying for the hardware and the fitting, and you can choose the appointment. The variables are the lock type and the security grade you move to.

Almost every confusing quote comes from one of these being priced as if it were the other.

What moves a lockout price

Driver	Why it moves the figure
Hour of day	Out of hours attendance is the single largest multiplier
Non-destructive vs drilling	Drilling destroys the cylinder, so a replacement is fitted and keyed on the spot
Lock type	A basic euro cylinder, an anti-snap cylinder and a multipoint mechanism resist very differently
Door and frame	A metal gate, a reinforced door or a swollen timber door changes the approach
Access	Whether a window, a patio door or a second entrance offers an easier route
Key snapped inside	Extraction first, then either the lock survives or it does not

What moves a lock change price

What is actually being replaced. Cylinder only, the full lockcase, or the whole locking system including handles and keeps.
The security grade. Anti-snap, anti-bump and anti-drill cylinders cost more as hardware and are the reason most lock changes are worth doing.
Keying. Whether several doors should share one key, which is cheap to arrange during the change and awkward afterwards.
The door itself. A door that has dropped or a frame that has moved needs adjustment, or the new lock will bind exactly like the old one did.

The local reason lock changes are common

Nearly four in ten Algarve dwellings, 151,269 of 391,416 classic dwellings, are second homes or seasonal use rather than main residences. In Quarteira the share reaches 58.6 per cent and in Alvor 60.6 per cent. Source: INE, Censos 2021, quadro Q304, Algarve scope.

That is a coastline where a large share of houses are handed between guests, cleaners, gardeners, pool technicians and key holders over a season. Keys get copied for good operational reasons and are rarely all returned. A cylinder swap between seasons costs a fraction of the alternative and is the reason lock changes here are usually scheduled maintenance rather than a reaction to something going wrong. Where a property changes hands often, keyed-alike cylinders across the front door, the back door and the pool gate are worth specifying at the same visit.

Why no figure appears on this page

Because the number that would fit here does not exist as one number. A lockout at 3am that ends in a drilled cylinder and a new anti-snap lock, and a weekday cylinder swap that takes ten minutes, are both “a locksmith” and are nowhere near each other. A single figure would be right for one of them and misleading for the other, and you would meet the real price at the door.

What can be done instead is quote your case once it is clear which one it is. The service page for locksmiths in the Algarve covers what the work includes and how to reach someone quickly.

What to send, or say on the phone

Locked out, or changing a lock. This decides everything else.
A photo of the door edge and of the key, for a lock change.
Whether the key is snapped, lost, or simply inside.
The door type: timber, aluminium, PVC, reinforced, or a gate.
Whether anyone else has keys, which is the question that turns a lockout into a lock change worth doing on the same visit.

The question that saves the most money

Ask what happens if the door cannot be opened without damage. A quote that covers only the good outcome is not a quote, it is an opening bid, and the drilled-cylinder case is common enough that it should be priced before anyone gets in a van. Agreeing both outcomes in advance is the difference between a price and a surprise.

What does a locksmith cost?