You have the potential of something really great here, you just want to proceed slowly and not dunk your money until you can legally confirm it will be your return on investment.

Legally they are probably allowed to show whenever they want with proper notice.

@Robert Morris it can work - until it doesn't via a lawsuit.Challenges:1) They are NOT professionals2) They are not licensed, so may cause you legal headaches3) They won't have insurance, so what happens when their actions lead to a lawsuit?

Many people say "I know for a fact none of my family has judgments" but family members regularly do not discuss their financial problems with other family members, may be unaware of legal issues and their standing, and there also could be fraud.You should also consider any prior spouses among the parties that ever lived at the property as a marital interest attachs regardless if they were on title unless resolved by express court decree (in which case former spouse should join the conveyance).An attorney is not required - though you will need a properly drafted deed, GITREP form, and affidavit of consideration to record.

However legally the LLC has a different address than my current home address or PO BOX. 

Especially true in CA like @Bruce Woodruff said @Sipan Y.Did you check the local regs in those areas where you are looking to make sure it is legal there?

My area of practice in the legal realm is trust formation for businesses and individuals.

Quote from @Ross Kane: To expand on the LLC protection theory:An LLC is useful for two things: anonymity and legal protection.

I couldn't find many helpful posts about if it's legal in Texas or not.

Is it legal for a family member to deliver the notice?