Think carefully about the number and types of rooms you’ll need, and what you could use extra rooms for in the future. An extra bedroom could be useful as a study.
Also make sure that the features you choose to build into your house will suit your lifestyle and add value to your home. For example, while you might not have children now, including a bath tub in one of your bathrooms might save you the hassle of adding one in later, or improve your potential resale value if selling to a family with young children.
On the other hand, if you’re not planning to live in the home you’re building over the long-term, you might want to save luxury features like that outdoor kitchen, expensive appliance or theatre room for the home you want to live in forever.