If you got permission in writing from your landlord to install the fence, check to be sure you didn't sign that you would leave it, or that any improvements belong to the landlord. Some contracts for rent state any changes tenant (you) make must be brought back to how it was when you rented. For example if you painted white walls to tan, you would need to paint them back to white unless the landlord gave permission to leave it ( in writing). Verbal agreements are worthless. If your fence did no damage and you fill in any holes from your posts, unless your landlord and you have an agreement in writing that you must leave the fence you put up, then your good to go. Clean up all messes, fill in all holes, and remember at the next place... If you get permission to put it up and take it with you when you leave, Get It In Writing! Be careful where you dig, take good care of your rentals and you shouldn't have problems. I'm a real estate broker, but I don't know the law in your state. It is different everywhere.