The answer
Do not enter or permit work merely because the scheduled possession time has passed, the property appears vacant, or someone has a key. Wait for the recognized possession-authorization and key-release process. Early occupancy or access raises contract, insurance, liability, security, damage, and ownership questions that require explicit legal and insurer review.
Calgary-specific context
This applies to movers waiting outside, locksmiths, cleaners, deliveries, pets, contractors, condo loading areas, garage remotes, door codes, and remote buyers sending another person to the property.
What to do next
Confirm the authorized release channel, keep all third parties off the property until confirmation, and use the planned storage, mover, condo, and accommodation fallback if release is delayed.
Verify before relying
Official sources for this topic
These sources explain the rules and records relevant to this topic. Check the current requirements for your property.
Check the current information at the linked source. Ask the appropriate professional how it applies to your property.
Important
This is general information, not legal advice. Speak with a qualified lawyer about your specific situation.