The Center (3 book series)

 I live in a small town, and when I was twenty, my grandfather passed away. He left me with a large amount of money. Unlike other people my age, I did something unexpected. I purchased a historic building across from our local courthouse and converted it into a meeting center where people could rent offices, meeting rooms, and event rooms that held up to fifty people. Our event rooms had refrigerators to keep things cold. Being a savvy person, I also purchased vending machines for people to buy office supplies, snacks, drinks, and coffee. On the fourth floor of the building, I converted it to my own apartment and storage area. Three years later, I am running a thriving business and making my own way.