The size of the home yoursquo;re demolishing will have the most significant overall impact on the projectrsquo;s cost. Larger houses have more systems to deconstruct and more material to separate and dispose of, requiring more time and labor. For example, a 1,200-square-foot house will cost between $4,800 and $18,000 to demolish, while a 3,000-square-foot house will run between $12,000 and $45,000.