Check the purchase offer. If the offer includes all window-coverings and blinds, then you must leave them behind.  If the offer does NOT include those items, you may be able to take the curtains, BUT must deal with the curtain rods which are attached to the walls.nnIn most areas you could take these, so long as you patch the holes in the walls and paint the patches, making them invisible to the casual eye.  Best to check with your real estate agent or lawyer if you are unsure.