Simpson) makes a product called EZ-SPIKE eliminates a need for concrete post footing. EZ-SPIKE is basically a long spike that has a square top sized to accept a post that is normally used for supports. By Simpson.
This idea: white picket fence surrounding the property with an archway and gate in front, connecting the road and the walkway to the house. Except the archway would likely be square if the house is square and round if the house is round.