CAD design uses computer technology to simulate a space, showing constructions within the room as well as measurements. It is a good way for designers to communicate ideas to customers, and it’s easy to see why it has caught on. However, it is possible that customers now expect a CAD design, so if you produce architectural and design drawings by hand, you may be missing out.
Customers who have had a kitchen or other fitted room designed using CAD technology will often be great advocates of the process. They will feel much more involved and have a better understanding of the process, how their room will look and how everything is going to be in real life. This can make it much harder for them to go back to hand drawn plans. If you want to get your fair share of the market and attract new, modern customers, it might be the case that you really need to be using CAD technology.