Anatomy of construction.  A cottage is begun, photographed mid September 2017.  On or within the  foundations, large white polystyrene blocks are laid to support the concrete floor. The concrete floor is left for a while to 'cure'.
Regulations govern the size of the area between the fences and the house and the size of an open area and of parking space. This one probably has rear access from a laneway.
Finally, timber has arrived for the next step.