As I'm getting my company started, we don't want to rent office space. There's not enough employees (actually no employees but me yet). But working on the couch has never worked for me. Sure, I've used a laptop or iPad on the couch for brief periods of time. But I'm a big fan of a desktop machine. Specifically, because I like a dual-monitor set-up. I had an office set-up in an extra bedroom. But the room was small. It didn't allow for visitors to collaborate with.
This past summer, I had a new garage built. I kept the old (built in 1951) one car garage assuming I would turn it into a patio/bar space. But with starting my own company, I found a different use. I turned it into my company's first office.
Here you can see some photos of the finished job. I put in two walls of glass so the space is bright and feels open. It's big enough for us to use as the company grows to its first few employees. And a bonus is that my dogs get to come to the office with me.
July 2012 Update. I have these two great walls of glass, one facing north, the other west. They let in lots of light. But here in the summer, the lots of light also equates to lots of heat. Now I live in coastal SoCal, so it really doesn't get that hot here (a day that hits 80 is rare). But with the sun coming into my non-AC garage, it would get boiling. So I recently bought a shade that covers most of the west wall of glass. Once the sun starts coming in (around noon), the shade goes down. It blocks out a lot of the light, which allows us to see our monitors, and blocks the sun's heat so it stays cool in the office. Plus I can keep both walls opened, so the coastal breeze still comes through keeping it very comfortable.