Like building an extension, you’re not legally required to hire an architect to build a house. However, given the amount of money you’ll be investing in your project, it’s vital to get it right. Clear, accurate plans are essential for any builder or other tradesperson to get the right materials in the right place. Building projects that go wrong because of inaccurate plans can at best look odd, and at worst be structurally unsound.
We’d recommend hiring either an architect or a skilled design and build company to create the plans for your new house. If you hire an architect to do your designs, you can choose whether to involve them further in your project, or use another professional or your own skills to take care of any applications and project management.