If you expect to routinely have groups of 6-9 people arriving and waiting in your reception area, then make sure you have at least 300 square feet. Billionaire David Geffen, founder of Asylum Records, for example, started in the mailroom at William Morris and then moved up to the agency's talent agent trainee program. In California, for example, a music agency or other talent agency has to submit a detailed license application and file a $10,000 bond. If you and your spouse own your home together and file taxes jointly, you can claim the total amount of the mortgage tax deduction on the return. The mortgage lender will file suit with the court system. Will you have employees involved in phone negotiations, research study, and other tasks that require more quiet concentration? Obviously the longer you stay in the building, the better off you will be because you will be gaining more and more equity.