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Master Key Systems Oxford for Offices HMOs and Colleges
One key for the manager, one for each tenant or team, and nobody copying keys at a kiosk. We design master key hierarchies with restricted keys and a written register, sized for a single HMO or a site with dozens of doors.
Plan a master key system
Tell us what you need and we will call you straight back. Calling is quickest: 07520 644 595. Photos by WhatsApp: 07466 695655
Hierarchy drawn up first
A written plan of which key opens which door, agreed before any lock is ordered.
Restricted key profiles
Keys that high street kiosks cannot copy, ordered only with authorisation.
Key register supplied
A record of every key number and who holds it, ready for your own updates.
Room to grow
Spare capacity built in so new doors can join the system later.
We design and fit master key systems in Oxford for offices, HMOs, student lets, surgeries, church halls and other buildings where different people need different access. Design costs £195 to £395 depending on the number of doors and levels, plus £45 per lock fitted, with cylinders and keys listed separately. Every system comes with a written key plan and register.
A good system means you carry one key, each user carries only the key they need, and a lost key does not force you to change every lock in the building.
How a master key system is structured
Every lock in the system has its own unique key, called a change key. On top of that, higher level keys are added that open groups of locks. The levels you need depend on how the building is managed.
| Key level | Who usually holds it | What it opens |
|---|---|---|
| Grand master | Owner, facilities manager or managing agent | Every lock in the system |
| Master | Building or floor manager, house manager | All locks in one building, floor or wing |
| Sub-master | Department lead, cleaner, maintenance team | A defined group, for example all plant rooms or all bathrooms |
| Change key | Individual tenant or member of staff | Their own door, plus any shared doors you choose |
Shared entrances, such as the front door of an HMO or the main office door, are usually set so every key in the system opens them. That way tenants and staff need only one key on their ring.
Master key systems for Oxford HMOs, offices and halls
HMOs and student lets
Each bedroom on its own key, the front and back doors on every key, and the landlord or agent holding the master. Common across East Oxford, Headington and Cowley shared houses.
Offices and studios
Staff keys for the entrance and their own area, a sub-master for the server and store rooms, and a grand master for the owner.
Surgeries and clinics
Consulting rooms, drug and records stores, and staff areas separated, with cleaners able to reach only what they need.
Churches, halls and clubs
Hirers get a key to the hall and kitchen only, while the vestry, office and equipment stores stay on a higher level key.
We also design systems for outbuildings, workshops and estate buildings on larger sites. For buildings that only need a lock changed when someone leaves, our commercial locksmith service is the simpler route.
HMO bedroom locks and fire escape rules
Escape without a key
Fire safety guidance for shared houses generally expects that anyone inside a room or the house can get out without needing a key. That usually means a thumbturn on the inside of bedroom doors and final exit doors. Oxford City Council licenses HMOs, so check its current conditions and your fire risk assessment before choosing lock types.
In practice we often fit bedroom doors with a euro cylinder that has a key outside and a thumbturn inside, or a suitable sashlock or nightlatch, all keyed into the house system. Final exit doors are set up the same way. Where a fire door needs a closer or the hardware is part of a fire exit route, see our pages on door closer fitting and fire exit door locks.
Landlords managing tenancy changes will find our guide for Oxford landlords and letting agents useful alongside this page.
Restricted keys: why they stop unauthorised copies
A master key system built on standard keys has an obvious weakness: anyone can take the master to a key cutting kiosk. A restricted, or registered, key profile closes that gap.
- Controlled blanks. The key blanks are not sold to the general public, so a high street shop cannot cut them.
- Authorised signatories. Copies are ordered only on request from named people, usually with a key card or letter of authority.
- Legal protection. Many restricted profiles are protected by patents or registered designs, which helps discourage copying of the blanks. Protection periods vary by manufacturer.
Premium cylinder ranges with registered keys, such as those on our high security cylinder page, can form part of a system, though not every brand offers deep master keying. We confirm which profile suits your building and number of levels when we quote.
Designing a master key system with us
Survey the doors
We walk the building, list every door, its lock type and size, and note fire doors, exits and any locks that must stay separate.
Agree who opens what
Together we map users to doors and decide how many levels you need. This becomes the written key plan.
Order the cylinders
Master keyed cylinders are pinned to the plan, so they are ordered rather than taken from van stock.
Fit and test every door
Each lock is fitted, then tested with its own key and every master that should open it, and with the keys that should not.
The design fee of £195 to £395 covers the survey, the plan and the register, and reflects the size and complexity of the building. Fitting is £45 per lock, with cylinders and keys itemised separately. Mortice locks on timber doors can be included too, as covered on our mortice lock page.
Keeping the key register up to date
A master key system is only as secure as the record of who holds which key. With every system we hand over a register listing each key number, its level and the doors it opens, with a column for the holder’s name and the date issued.
Good habits for key holders
Sign keys out and back in. Never label a key with the door or address. Keep spare masters in a locked key cabinet, not a desk drawer. Review the register whenever a tenant or member of staff leaves.
Adding doors later. When the system is designed with spare capacity, a new office, extra bedroom or new outbuilding can be added by ordering another cylinder to the same plan. Tell us your likely growth at the design stage.
What happens if a master key is lost?
Losing an individual change key is a small problem: that one cylinder is replaced or rekeyed and a new key issued. Losing a master or grand master is more serious, because that key opens many doors.
- For a lost sub-master, only the locks in that group usually need recombining.
- For a lost master or grand master, every lock it opens may need changing or rekeying, which is why those keys should be kept to as few people as possible.
- If you think the key was stolen rather than mislaid, treat it as urgent and secure the most sensitive doors first.
Our lock rekey service is often the most economical way to restore control. If a key holder has simply left with a shop or office key, our guide on what to do after losing a shop key covers the first steps. All our business work is listed under locksmith services in Oxford.
Master key system prices in Oxford
Prices include VAT and labour, cylinders and keys are itemised separately, and the design fee is agreed after we know the number of doors.
| Service | Price | What's included |
|---|---|---|
| Master key system | £195 to £395 design + £45 per lock | Survey, written key plan, register and fitting |
| Commercial lock change | £75 to £115 + lock £40 to £150 | Single doors outside a master system |
| Lock rekey | £45 to £65 per lock | After a lost change key or sub-master |
| Keypad lock fitting | £145 to £195 + keypad £80 to £250 | Code entry for shared doors |
| Extra keys | £8 to £25 per key | Additional change keys within the system |
Prices include VAT and labour. Parts are listed separately. See the full Oxford locksmith price list.
