1.When answering this question, you can discuss the motivations and benefits of building a house by oneself. Some people may choose to build their own houses to have more control over the design, layout, and materials used, allowing them to create a home that perfectly suits their needs and preferences. 2.Building a house by oneself can also be a cost-effective option, as it may reduce labor costs and allow for more budget-friendly choices. Additionally, the process of building a house can be a rewarding and fulfilling experience, providing a sense of accomplishment and personal satisfaction. You can also mention that some people enjoy the challenge and learning experience that comes with building their own home.