A master key system lets one key open every door in a building while individual keys open only their assigned rooms. It's built for businesses with several doors and different staff access needs, and it replaces a drawer full of loose keys with one organized structure.

Who Needs This Service?
- Office buildings with multiple departments or tenants
- Retail stores with back rooms, offices, and storage that need different access levels
- Property managers overseeing several units in one building
- Warehouses with separate zones for staff, shipping, and management
- Any business replacing a confusing mix of unmatched keys with one system
What's Included
- A full audit of your doors and who needs access to each one
- A key hierarchy design showing master, sub-master, and change keys
- New or rekeyed cylinders to match the designed hierarchy
- Cut keys labeled and organized by access level
- A record of the system for future key requests
- A walkthrough showing which key opens what
Our Process
- 1
We walk the building and map every door that needs a lock.
- 2
We design a key hierarchy based on who needs access to which areas.
- 3
We rekey or replace cylinders to match the new system.
- 4
We cut and label keys by access level and hand off a system record.
What This Service Costs
Cost depends mostly on how many doors and access levels are involved. A three-door office system costs far less to build than a warehouse with a dozen zones and multiple staff tiers.
We look at your building and your access needs on-site, then give you a written quote before any cylinder is touched.
How the Hierarchy Works
A master key system is built in tiers. At the top sits the master key, which opens every door in the building. Below it, sub-master keys can open groups of doors, like all doors on one floor or all doors in one department. At the bottom, change keys open a single assigned door.
Each cylinder is pinned to recognize both its own change key and the master keys above it in the hierarchy. That's why one key can open many doors while another opens only one, using the same locks.
Once built, the system can usually absorb staff changes by rekeying or replacing a single change key rather than redoing the whole building.
Signs Your Current Key Setup Isn't Working
- Staff carry a heavy ring of unmatched keys for one building
- No one knows exactly which key opens which door anymore
- A lost key means guessing which locks might be at risk
- New hires wait days for the right keys to be sorted out
- Different tenants or departments share keys that should be separate
Talk to a real local locksmith. You get the price before any work starts.
Call 812-454-0180Why Evansville Businesses Rebuild Their Key Systems With Us
A poorly organized key system is a slow leak on security. Every unmatched key and every uncertain hand-off is a small risk that adds up over years of turnover. We design systems meant to hold up as staff and tenants change.
We document what we build. When you need a new key cut two years from now, there's a clear record of the hierarchy instead of a guessing game about which cylinder does what.
