Expand Your Existing Master Key System
Expanding a master key suite is easy when the hierarchy is clean and documented. It gets tricky when the suite is old, partially undocumented, mixed-brand, or has “mystery keys” in circulation. We can audit what exists, stabilise control, then expand safely so new doors fit the plan.
- Identify your current hierarchy (even if incomplete)
- Audit door groups and keys in circulation
- Document the suite for repeatable re-orders
- Add doors using the existing plan (or a stabilised redesign)
Trusted master key system support
Speak to an MLA accredited locksmith team with in-house planning, documented suite records, and practical support before and after installation.
Master locksmiths with BSI accreditation
MLA approved locksmiths, BSI certified key systems, and independently audited security standards.
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Customer reviews
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Absolutely brillant service ordered new keys came next day, had step by step emails from ordering to keys been dispatched. Staff brillant too will definitely use them in the future and have already recommended to friends 😊
Suzi Lyon
Got dry lube for maintenance of front door lock as recommended by door supplier but was really hard to find just walking into DIY stores. Found this company online and got the product I was after so very pleased. Very efficient and helpful company and delivered in the time frame they stated. I would recommend.
Sylvia Colson
It was a simple process to order online. Delivery was very quick. Well done. Would use again.
Antony Poulton
Top Quality Store
Two ways to expand an existing suite
The “right” route depends on what you have today: a documented suite you trust, or a legacy suite with unknowns.
Expand the current hierarchy
Best when the suite is documented (or close to it) and you trust the existing key structure. We add new doors so they fit cleanly into the plan, and keep re-orders consistent.
Audit, stabilise, then expand
Best when the suite is old, undocumented, mixed-brand, or has drifted over time. We audit what exists, document it, and recommend the safest way to regain control before expansion.
What we need to quote an expansion
Don’t worry if you don’t have everything. The goal is to understand the current suite and the doors you want to add, so the expansion doesn’t create future headaches.
Common triggers we see
New doors need to fit the existing plan and future expansion.
Keys and cylinders drift over time. Audit-first avoids surprises.
Restricted profiles and policy-based ordering restore control.
Hierarchy and issuance processes need to survive churn.
Expansion by industry
Sector pages cover typical expansion pressures, hierarchy examples, and key control patterns.
Local Authorities
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Hospitals & NHS Estates
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Schools & Colleges
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Universities
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Build-to-Rent (BTR)
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Housing Associations
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Facilities Management Companies
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Commercial Buildings
Expansion planning, re-orders, and how to keep suites controllable through turnover.
Expanding master key systems: common questions
Open the sections you need.
Can you expand a system if we don’t know the brand or the plan? ⌄
Do we need to replace everything to regain control? ⌄
How do we prevent uncontrolled key copying during expansion? ⌄
Ready to expand your suite?
Send what you have (keys, door list, photos of cylinders). We’ll recommend the safest expansion route and quote supply and install.
Prefer to talk?
Phone: 01296 752080
Email: info@lockandkey.co.uk
See how your whole system connects
Explore your keys, groups and communal doors in a visual system map. See expected access connections, give people the keys they need, and manage orders and permissions in one secure place.
You decide who gets the keys.
An order outside someone’s access comes to you for approval. Check who is ordering, where the keys are going and exactly what they requested. Approve it when it checks out, or deny it when it doesn’t.
Pair these approvals with PREM 4, our usual patented keyway, for control over key supply as well as who can order. Every decision leaves a record in your system’s history.
Already have TSR or HMJ keys? Use the ordering page above. For another key range, contact us to find the matching product.