There are other materials used for building houses,
concrete blocks still remain the number one item
used in construction.
Many block molding, making factories around, but
I am sure you will not have a problem getting
people to patronize you, if you distinguish
yourself in the business by making quality blocks.
Put your service information in the books of directory
Services, Give your service information in face book page.
Put an advertising banner in centers, give web add also
in social media. Then you will get good response.
At the same time, do not spend too much on ads.