You have the right to an attorney of your choosing, if you can afford one. Unfortunately, you can't, because your assets were just seized. Want to challenge the seizure? Not happening.
You also have the right to refuse to allow the police to search your home. Unfortunately, they may drag you away in cuffs and pressure your cohabitant into overriding your refusal. So, there's that. Just make sure you don't give them an "objectively reasonable" reason to slap on the iron bracelets.