Drainage issue from rain. In NJ

[Chris Breezy]

I recently inherited a house in nj it's on ground which is not the norm since hurricane sandy, most houses are on stilts. The house is only worth 100k at best so I don't want to put 30k into it just to raise a junk house. The grass is not level and it's causing the front of the house to sag. Any advice on how I can prevent the build up of rain from damageing my house

[Wayne Brooks]

A clay soil doesn't allow water to permeate through it, it will run off, away from the house.  Rocks don't absorb water, they let water run through them, which you don't want.