If you are looking to build a recently abandoned house, leave most of the furniture in it and objects strewn around. Mig has a great set of modern household items like a microwave, computer, refrigerator, desk chair, etc. Some of the WWII-era couches and bedroom furniture sets can still be used too. Other items can be scratched.
For one that has been abandoned a while, most of the usable items would be looted and gone. It would be pretty bare except for broken furniture and debris. I would leave some loose rags/fabric, pulled down drapes, and maybe a few items like pictures, books, etc. strewn about.
Some exaples or warzone abandoned, modern houses:





Hope that helps. Good luck.