Some people do opt to use their home address as their home-based business address and others do not. Depending on the type of business you're in you may want to look into other options. For example, if you run an online business and customers/clients could potentially be returning goods to the address or sending payments to the address, you may want to have a more professional looking address (apartment numbers, for example, aren't all that professional looking). If on the other hand, you provide accounting services to clients locally, then you probably aren't too concerned with using your home address.

Whatever your reason may be, there are companies who provide business addresses for a reasonable fee. Mail Boxes Etc. is a great example. Check out their website and others like them to learn more.