This is where a sample template can also help. You can search for a commercial lease agreement sample for your state to help you get a good idea of what your lease agreement should look like, of what is required by law and of what you should add to your own. Make sure to find a few of good ideas to give you as many ideas as possible about how to put together this form.
When you find yourself considering going into business together you might want to consider how you are going to protect yourself in the event of a disagreement. If you are not planning to form a partnership you can always use a joint venture template to draw up an agreement that will protect all those involved in the venture. Considered a legally binding contract, you will find that when properly filled out this document will leave little for any errors or the type of misunderstandings that can cause what is otherwise a good, solid working partnership.