Identify an area where those constructing are buying materials, and park the vehicle there. When I was constructing, I was hiring pickups regularly to transport materials eg chumas, cement, mbaos, doors, window grills, gate, tiles, MDFs, landscaping plants etc. Normally after buying the items I would look for the nearest pick up for transport. Also talk to the hardware guys coz they always ask if one needs a pickup to transport materials after one has bought bulky items. And they always have some numbers for pick up guys.