What is “Mixed Use Development”? It’s a piece of property that has both residential and commercial uses. Typically speaking, this type property is where the owner of a business lives on the property themselves. Today, mixed use is usually dense residential development that sits on top of Commercial development. In Redondo Beach, that means up to 35 living units of residential on top of what is mostly commercial storefront. Never a success in the South Bay, much less Redondo Beach, mixed-use is at a cross roads with the community at large. One of the Primary reasons of hatred: Traffic.