Firstly, What is the business you want to start.
Do you have something in mind or are you still thinking. Renting out a place...certainly would depend on what business you are starting?
Say if you are going to start a Pizza place, you certainly need to have a place rented out.
But if you are thinking of a ad agency in your local area or a Computer repair service you can certainly start off from your home.
Well it all depends on how much you want to invest, you certainly must have a business plan , a projection.
I hope this helps.