Paving Front Garden (Duplex)


I live in a ground floor duplex. There is a small patch of ground to the left of my front door which stretches in front of my window as far as the stairs to the upstairs property. I am looking into getting this area paved and wondered if anyone on here has done the same.
My question is whether or not I need the management company's permission to alter it. I also wondered if anyone could recommend some company they think did a good job for them.