Nearly all of the pizza ovens on our list are portable to some degree. Many are small enough to set up on a table (or other heat-proof surface) and then put away at the end of summer. These are not space hungry (although you will want room to store in a shed or garage), and they can be taken camping or to a friend's house if you want a pizza party elsewhere.
There are some great pizza oven stand ideas so you can make it a feature in your garden for the warmest months while entertaining. One of our picks simply sits atop a BBQ for cooking making it a great choice for occasional use.
A built-in pizza oven is a much bigger commitment. For one, you need a large enough space – safely away from fencing or trees – to build your pizza oven in. You also need to be pretty sure you are going to give it plenty of use. That said, many will double as an outdoor fireplace, so a trattoria-style brick pizza oven could be a wonderful focal point in your outdoor dining area.