u/LurkerWithNoName

Just moved into an old house that was somewhat recently (within the last 10 to 20 years) renovated into apartments. I truly cannot tell if the walls are plaster or drywall. It looks somewhat like drywall, but i cant tell if the jagged edges are a landlord special cut, or if it’s just plaster being plaster. I was planning on hanging shelves, but unsure if I’ll do that now that the walls are potentially plaster.