While many may be unsure about moving out of their homes, it can actually be quite costly being a homeowner, even if you have your house paid off. According to CostHelper.com, it costs approximately $10,000 to replace your furnace and central air conditioner system. Lawn care for 10 years costs an approximate $25,000. And, depending on size, shape, and quality, CostVsValue.com says replacement windows for an average home cost $11,000, and the average roof replacement using composite shingles costs roughly $20,000. These expenses can quickly add up, so if you are unable to do these repairs yourself, or need assist with landscaping then it might be time to look into a retirement community.