Hi Bonnie,
Front doors to apartments need to be fire rated doors. If you have a security building access can be a problem – you can contact your local brigade and enquire if they will hold a key, however sometimes it is a different brigade that attends.
Strongly recommend the OCN seminar on Fire Safety in apartment buildings on March 14
Sign up here – https://www.ocn.org.au/civicrm/event/info%3Fid%3D91%26reset%3D1