Legal Question in Criminal Law in California

You don't have to let the police search your home if they don't have a warrant. The big issue right now is whether they found anything in your home and have charged you. If you are being charged, you need to get an attorney and file a motion to suppress.

If the police asked for permission to search the house and you (or someone else who reasonably appeared to have authority) gave it to them, then they were allowed to do it. They probably needed a warrant if they didn't get such permission, though I can imagine circumstances in which no warrant would have been needed.

You should get a lawyer ASAP and discuss your case with her in detail. If the search was improper, she may be able to persuade the court to exclude the evidence.