When it comes to investing in residential real estate, there are a variety of things to consider. The options are endless when it comes to residential properties. Properties range from low-end to upscale. There are also different types of residential properties including condos, townhouses, single family homes, duplexes, and more. While many seek to fill their real estate portfolios with high-end or upscale real estate, there are many benefits to investing in low-income housing.