If you manage several doors, a set of flats or business premises, carrying a separate key for every lock quickly becomes inconvenient. Two arrangements worth understanding are keyed alike locks and master key systems. They solve different problems, and choosing the wrong one can make access management harder.
What does keyed alike mean?
Keyed alike locks are set up so that the same key operates more than one lock. For example, a homeowner might want one key for a front door and a back door. A small business might use one key for two authorised entrances.
It does not mean that any two existing cylinders can automatically be made to work with the same key. The lock types, cylinder profiles and available keying options must be compatible. A locksmith can check the existing hardware before recommending replacement cylinders or a suitable keyed-alike set.
What is a master key system?
A master key system allows different keys to have different levels of access. For example, an office manager might have a master key for several rooms, while individual staff members have keys that open only their own authorised doors.
These systems need to be planned as a whole. The number of doors, who should enter each area, future changes and the type of cylinders all matter. A master key arrangement is not simply a bundle of keyed-alike locks.
Keyed alike or master key: which suits your property?
- One household, several compatible doors: keyed alike may reduce the number of keys you carry.
- A small shop with the same authorised users at each door: keyed alike may be sufficient, depending on the locks.
- Offices with staff-only rooms or different access permissions: a properly designed master key system may be more suitable.
- Multiple rental properties: assess each property separately. Convenience must not allow one tenant’s key to open another tenant’s home.
Neither option automatically improves the physical strength of a lock. Cylinder quality, door condition, correct fitting and access control still matter.
Are restricted keys the same as master keys?
No. A restricted key system is designed to control how additional keys are supplied, usually through an authorised process. A master key system controls which doors different keys can open. Some systems offer both features, but one does not automatically include the other.
Before ordering, ask how duplicate keys are authorised, whether the key profile is protected or controlled, and what happens if a key is lost. Keep a clear record of issued keys and retrieve them when access rights change.
What should Dundee landlords and businesses check first?
- List every door and the people who need access to it.
- Check the existing lock type and cylinder dimensions. Not every door uses the same hardware.
- Decide whether everyone needs the same access or whether separate permissions are required.
- Consider lost keys, staff changes, tenant turnover and future expansion.
- Ask for a written specification and quotation before ordering a system.
For rental handovers, our end-of-tenancy lock checklist explains other security checks worth making. If a door or cylinder needs changing, see our lock change service in Dundee.
Get advice on the right locking arrangement
Locksmith Dundee Ltd can assess existing locks and discuss keyed-alike, restricted-key and master-key options for suitable properties in Dundee and surrounding areas. The right solution depends on the doors and your access requirements; it should be confirmed after checking the hardware.
To arrange an assessment or ask for a quotation, contact Locksmith Dundee or call 01382 671054.