
A master key system lets each person open only the doors they need while a manager or owner key opens all of them. It is common in offices, apartment buildings and businesses with several rooms or units.
How it is set up
We map out which keys need to open which doors, then key each cylinder to work with its change key and the master key. When someone leaves, you rekey their doors instead of every lock in the building.
What we do
- Offices and suites
- Apartment and multi-unit buildings
- Storage and back-of-house rooms
- Planning key levels for staff
- Adding doors to an existing system
Keep a record
A master key system works best with a simple key log of who holds which key. It makes rekeying after a staff change quick and targeted.
Master Key Systems across Seattle and nearby cities
We provide master key systems in Seattle, White Center, Burien, Tukwila, Mercer Island, Normandy Park, SeaTac, Renton, Bellevue, Des Moines and Kent. We are open 24 hours, so you can call day or night.
Frequently asked questions
How many levels can a system have?
It depends on the locks and the building. We plan it with you.
Can you add to our existing system?
Often, yes, depending on the cylinders in use.
What happens if the master key is lost?
The cylinders should be rekeyed. Call us to plan it.



