I Am Not a Tenant, Nor Am I the Owner (About Business Address)

[Kyobaru]

Hello, I have taken the first steps to establish a sole proprietorship. At the moment, the only issue I am facing is the business address. I will be consulting with an accountant but I need to wait until Monday. If anyone has information on this, could they please respond? I am not a tenant at the address where I reside, nor am I the owner. My father is the tenant. Despite this, can one room in the house be used as the business address?