Last night it rained and although it sounded pretty heavy this morning I took a look at one of the local weather sites. I have also put a call in to NIWA so as to get the official records.
The second to last photo shows the water is nearly 20mm deep.
In the last photo the orange paint was put there by the builders who came in to put some cement around the foundations as water had been tracking under them. The area to the right had been excavated and used to fill up with water so HNZ told the builders to just fill it with dirt. You can see that the dirt is becoming pretty damp and the discolouration of the paint is being caused by the water underneath.