The usual picture, the house is complete, but the greenery remains. To lay out finished lawn instead of the fastest.
Before starting work, make sure that the soil is not water-resistant, ie tight and wet, with all pores water-filled and with surface water that does not drain. In that case it may be necessary to drain the water through thickening. Contact the authority for this!
The Stenkammar well has saved many lawns from the flood. Select even stones and place them so that much water is allowed.