Can Police Search My Stuff Because My Sister Applied To The Police Academy.

So my sister applied and passed the police academy test to go and be a police officer and a friend of hers informed her that the police could come to our house at any time and just search our stuff (I assume with her consent). I live with my mom and my sister and my mom is the legal owner of the house if my mom doesn’t consent to the search and I don’t consent to the search can the police come to my and my moms rooms and search our stuff. Will my mom and I not giving consent to the search reflect negatively on her as an applicant. I honestly don’t have anything illegal but I do not want my constitutional rights violated and have my property searched just because a member of my family is applying to be a police officer. Thank you for any advice ahead of time.

Edit: both me and my sister are adults and this in California (if you need more info to give better advice feel free to ask)