Welcome to the Workshop community @sajshr. I'd be glad to help with your cabinet and benchtop project.
If you could provide our helpful community members with a few more details about what you want to achieve, that will assist them in giving some specific advice. What size is the area the bench and cabinets are going in, what is the dimension of the washing machine and dryer, did you want the cabinet half size or full height? It would also be fantastic if you could provide an image of the area.