The second-hand house I bought has been transferred. I owe 1 year property fee. What if I don't sign a property service contract?

At this time, the second-hand house you bought has been transferred, and this house belongs to you. You should have signed a property contract with the property management company, and the original landlord has transferred the property fee owed to you. This is a good thing. As long as you sign a property contract with the property management company, it is no problem to make up the property fees for these three years.