Family
The Castle emphasizes the significance of family and togetherness. Despite being a working-class family on the brink of homelessness, the Kerrigans are determined to fight together for their home. Darryl is far from being a wealthy man, but he always makes sure to take care of his family. His family on the other hand loves him and supports him in his endeavors.
Coolaroo is a peaceful and harmonious community full of families that have built their lives in this place. All of their good and bad memories are connected to Coolaroo. The threat of separation weighs heavy on everyone's heart as they've come to build a cohesive family that encompasses everyone in the community.
Human Value
One of the most profound questions in this film is whether you can actually put a monetary value on human values and experiences. The people of Coolaroo are faced with a tough dilemma when they are offered money for their homes. They've lived their entire lives here and made everlasting memories and connections. It's unimaginable how they could trade that for any amount of money or compensation. Lawrence argues in court that it is undeniably unreasonable to think that these people will just let go of their homes willingly.
Land and Property Rights
Land rights is a core issue in this film. As it attempts to reconcile the Australian past with the present, Sitch draws a parallel between the struggles faced by native Australians and the people of Coolaroo. The Australian constitution strictly dictates that any property or landowner has the right to be compensated fairly for the acquisition of their property. Kerrigan argues that the value of his home cannot be monetarily compensated, but often times the law places a cash value on such priceless experiences. Despite the similarities in their struggles, the plight of Native Australians cannot be fathomed or compared to the privileged struggles of the modern day.
