We require and carefully check references of all our employees and contractors. By carefully scheduling the work on your home we plan to have our workers on site on every work day. In itself this attendance offers security. Security during remodelling work is complex as the ability to lock up completely is often compromised. Secure site fencing is something we use when this is a practical option. In the course of weatherproofing your home during construction security becomes and integral consideration of course. Generally your home will be just as secure as it is normally.
Like you though, we can see some potential for “normal” household security to be compromised. With that in mind we would recommend that fragile or valuable articles be removed prior to commencement of the work on your home.