Depends on how specific you want to get.
The chairs are all real chairs that I took pictures of and then edited. So they are 100% my work and you are welcome to use them as you wish.
The tables, chests, house, and sarcophagi all started as some type of picture or texture on cgTextures.com and were photoshopped by me into the objects I posted. For example, three of the chests were made from pictures of medieval doors to which I added hinges and corners and engravings to make them into chests.
You should check the EULA on cgTextures to see how it applies to this. I believe they are free to use as long as they are part of a larger picture or map and are not used in a video game.
The bars and weapons tables are all made by me using smaller Items posted on Dundjinni and therefore free to use as desired.
BUT I am no expert in copyright law, this is just my personal opinion.

BTW, Thanks, glad you like them!