“Provide additional labour due to restricted access and/or site conditions” they are charging 1500$ for this.
Please whoever has crossed this stage throw some light on.
Does the work to do driveway also include any area on the side of your house? (e.g.) along the garage to the side of your house to allow for bin storage and movement?
It appears that additional charges are quoted due to inaccessible area that could need excavation, leveling, dirt removal/disposal. And/or the land where driveway will be done needs abnormally high excavation, leveling, dirt removal/disposal.