7 Signs YouÕre Dealing With a SERIOUS Buyer 1. TheyÕre working with a Realtor¨. 2. They ask for a private showing. 3. They take their time during the house tour. 4. They take their time during the house tour. 5. They ask a lot of questions about the property. 6. They have a pre-approval from a lender. 7. They make a fair offerÐwithout stalling or nitpicking.