Archived job

Flatten lawn with new soil and install sprinklers

I have a L shaped lawn total 24m2, it's a slope on the narrow side. it has Auckland top soil so the clay is hard and irregular. I want a smoother lawn with a good soil like Waikato soil I already purchased sprinklers, irrigation pipes, timer etc to do DIY but I am not able to do trenches so i need your help to install it.