Every play is going to require some properties or props. Even a pencil is a prop if the script requires an actor to use one. Usually however the furniture and other props required are far more varied. Check what furniture and props are mentioned in the play. Do not rely on the prop list usually given in a play script, you will often find that something has been missed or that you need something extra.
Furniture needs to be in the period of the play.
Sometimes you may have to remodel or disguise the appearance of items to make them look right. A good prop master has the ability to beg, borrow or obtain all sorts of items from wherever you can find them. Keep a record of who has loaned each item and what arrangements you have made to transport larger items, like this . Personal props are items that the actors carry or use on stage and should usually be easier to obtain. Provide actors with temporary props for rehearsal so that they get used to handling items.