We built a 20’x20′ workshop that is mostly powered by a gas generator. We needed a place to run the generator and keep it securely locked and out of the weather. I built this generator house years ago and it has worked great.
The generator shed is framed with cedar 2″ x 2″ lumber and covered with 1/2 inch pressure treated plywood. One sidewall is on hinges and lays flat to roll the generator in and out. The generator can run inside the house when completely closed, or sitting on the sidewall (preferred way).