How to know if your home is too expensive By Erin Gobler article Housing makes up the largest chunk of many people’s budgets, but can quickly become unaffordable. We’ve rounded up expert tips for how to tell if your home is too expensive. (iStock) For most people, housing makes up the largest chunk of their monthly budget. And buying a home is often the largest purchase people will make. Unfortunately, it’s far too easy to get in over your head. Expensive houses and real estate can adversely affect your monthly income and you may not be able to afford other essentials.