All he has to do is put them in the spare bathroom( no windows) and have a lock.
Not that hard to comply with storage laws.
When I said safe, I was referring to all containers that can be locked without easy access.
I would also suggest that you be sure that the door hinge pins are on the inside if you think you're good to go with room storage.
One might also think it reasonable for regional, provincial and federal LEO's to have taken the firearms course and qualify for an RPAL and to know the course information for the safe handling and storage of their personal sidearms. Many may have but it's not a requirement.
The pins do not need to be on the inside, if they need a tool to get into the room (screwdriver) then you have met the requirements.
The safety requirements have nothing to do with theft, they have everything to do with slowing someone unauthorized to access the firearms, mainly kids.
The $5000 gun safes can be broken into with cordless tools, they just take a little less time than a hollow core door.
The difference between locking your house and a bedroom is?
Non-restricted firearms
Attach a secure locking device, such as a trigger lock or cable lock (or remove the bolt) so the firearms cannot be fired; or
Lock the firearms in a cabinet, container or room that is difficult to break into.
Those are the rules from the RCMP.
Do with it what you want, not going back and forth over all this crap again. Every single year.