I helped a builder friend build this last fall . It is 22x30 with 5/12 pitch roof which gives me storage space in attic. It still is not ready inside yet. The back of inside will have HO & O and Large scale layouts for Grandkids and Me. The front will have my wood working tools. I am waiting for warmer weather so electrical contractor can run power out to it. I have wired the inside already. Pardon the mess inside. here are pics of outside and inside.