Home Staging Company Names

Question: On online job application how do I state location of a prior job if it is newly formed and has no one location
I worked for my father's startup (read not yet officially established) energy company. I helped with a lot of the planning and drafting stage from our home. I'm now applying for a different job whose online application requires the locations of previous jobs. I'm not sure what to place for the location for the job with my father since neither my home nor my town are the main locations, there is no official building yet, and there are a number of partners around the world. I have the name of the company on the new job application under previous work and it insists on my naming the location (city, state) of prior jobs but i just don't know what to put there.
Answer: put
company name (a start-up Company) your home address
(one of several address, none permanent)
Libby Holman and her Orchestra - Why Was I Born (1929)