Getting all locks on one key takes a locksmith about an hour, and it usually costs far less than homeowners expect. You do not need to replace every door. In many cases we simply re-pin the cylinders you already own, so that a single key turns your front door, back door, garage and side gate.
This guide walks you through exactly how the process works, what we check before we start, what it costs, and how to keep the convenience without weakening your security.
What “one key” actually means
Locksmiths call this a keyed-alike setup. We match the internal pin arrangement of several cylinders so they all accept the same key profile. Each lock keeps its own full strength, so you lose nothing in security terms, but you carry one key instead of five.
If you want a fuller explanation of the terminology, and how it differs from a master key system, read our guide to keyed-alike locks. This article focuses on the practical side: how we actually do it.
Step one: we check what you already have
Before we quote, we look at four things.
The cylinder type. Euro cylinders, oval cylinders, rim cylinders and padlocks each use different internal formats. We can usually match locks within a format, but not always across formats.
The brand and series. Cylinders share a key only when they use a compatible keyway. Two locks from the same manufacturer and series match easily. Two locks from unrelated brands often cannot.
The condition. A worn cylinder with sloppy pins will not hold a new key reliably. We replace those rather than re-pin them, because a rekeyed worn lock simply fails again.
The security rating. If your cylinders lack anti-snap protection, we will say so. Putting your whole property behind one key only makes sense when that key sits in a cylinder that resists attack.
Step two: you choose rekeying or a matched set
Two routes lead to the same result, and we recommend whichever suits your locks and your budget.
Option A: rekey your existing cylinders
We remove each cylinder, re-pin it to a common key, and refit it. This works well when your current locks are modern, sound and compatible.
- Best for: good-quality cylinders fitted in the last few years
- Typical time: 45 to 90 minutes for a standard house
- Cost: lower, because you pay for labour rather than hardware
- Limitation: we can only rekey compatible cylinders
Option B: fit a matched set of new cylinders
We supply a set of brand-new cylinders, all cut to one key at the factory or pinned by us on site.
- Best for: old, worn, mismatched or low-security locks
- Typical time: 60 to 90 minutes
- Cost: higher upfront, but you gain new, rated hardware
- Advantage: you can specify anti-snap ABS cylinders across the whole property
Most of our customers in Bournemouth and Poole choose a mix. We rekey the newer doors and replace the tired ones, so the money goes where it actually improves security.
Which locks can go on one key?
We regularly match all of the following to a single key:
- Front and back doors, by far the most common request
- Internal garage doors and up-and-over garage locks
- Sheds, outbuildings and workshops
- Side gates and garden padlocks
- French doors and patio doors
- Communal entrance doors, where the freeholder agrees
- Window locks, on some window systems
Landlords ask us for this constantly. One key per property, instead of a labelled bunch per property, saves a genuine amount of time across a portfolio. Our service for estate agents and landlords covers exactly this.
What it costs
We price each job on the number of cylinders, and on whether we rekey or replace. Rather than quote a figure that may not apply to your doors, we look at the locks and give you a fixed price before we start. You pay no call-out fee anywhere in the BH postcode area.
Two things affect the price more than anything else: how many locks you want matched, and whether you want anti-snap cylinders throughout. Matching four doors costs considerably less per lock than matching one, so most people do the whole property at once.
The security question you should ask
One key opens everything, which means that if you lose that key, you have exposed every door at once. We think the convenience is worth it, but only when you handle it properly.
Fit anti-snap cylinders. Lock snapping remains one of the most common break-in methods in the UK. A keyed-alike system built on unrated cylinders multiplies that weakness across your whole property. We fit ABS-approved, TS007 3-star cylinders as standard, and we hold approved centre status for them. Secured by Design, the police-backed crime prevention initiative, sets out why cylinder rating matters so much.
Choose a patented key profile. Patented keys cannot be copied at a kiosk or a market stall. You order replacements against a security card with a unique code, so you always know how many keys exist.
Keep a record. Write down how many keys you issued, and to whom. Landlords especially benefit from this.
Act immediately if you lose the key. Rekeying after a loss costs far less than the alternative. Call us the same day and we will sort it.
Why local homes suit keyed-alike systems
Plenty of properties around Bournemouth, Poole and Christchurch have accumulated locks over decades. A 1990s back door, a replacement front door from 2015, a garage the previous owner fitted, and a padlock on the side gate that nobody remembers buying. Each came with its own key, and none of them match.
Bringing that collection onto one key tidies up the whole property, and it gives us a chance to upgrade the weakest cylinder in the chain. We often find one door running a basic, snappable cylinder while the rest look fine. Matching the locks is the moment you discover that.
Get all your locks on one key: call JCarter Locksmiths
Ready to carry one key instead of five? We supply, fit and rekey locks across Bournemouth, Poole, Christchurch and the surrounding areas:
- Front door, back door, garage, shed and gate matched to a single key
- Rekeying of suitable existing cylinders to keep costs down
- Anti-snap, ABS-approved TS007 3-star cylinders available throughout
- Free, upfront quotes with no call-out fee
- Family-run, military veteran-owned, hundreds of five-star reviews
Call or WhatsApp us on 07842 252 025. See our door lock services or request a free quote.
Frequently asked questions
Can you put my front door, back door and garage on one key?
Yes, and we do it most weeks. We check that the cylinders use compatible formats, then either re-pin them or supply a matched set so one key operates all three.
Does rekeying weaken the lock?
No. Re-pinning simply changes which key the cylinder accepts. The lock retains its original strength, its anti-snap features and its rating.
How long does the work take?
We complete a typical three or four door house in 45 to 90 minutes. Larger properties and landlord portfolios take longer, and we will tell you the timescale when we quote.
Can you match locks from different manufacturers?
Sometimes, but not reliably. Different brands use different keyways, so we usually supply one matched set instead. We confirm this once we have seen your locks.
What happens if I lose the single key?
Call us and we will rekey the whole set to a new key the same day where possible. If you hold patented keys, nobody can copy the lost one without your security card.
