Almost anybody can start a concrete block machine business if you have an outbuilding to work with and live in an area that does not forbid starting a small business operation in your backyard. Concrete block making businesses do not have to be started as a large-scale operation in order to succeed in bringing in extra money. Concrete blocks are used in many kinds of building projects, and some contractors order just small amounts of bricks at a time in order to do renovations or small piece remodeling jobs. It is possible for a backyard concrete block producer to sell just now and then to contractors needing small-job supplies.