If you’re a first-time buyer wondering what you need to buy a house or flat, you’ve come to the right place. This guide takes you through the process of buying your first home, including saving your deposit and applying for a mortgage. Before looking at properties, you need to save for a deposit. Generally, you need to try to save at least 5% to 20% of the cost of the home you would like. For example, if you want to buy a home costing £150,000, you’ll need to save at least £7,500 (5%).