Thank you for your question. The answer to both questions is a little more complicated than just a "Yes" or "No". A gas fire pit can be installed in some covered patios depending on the city code. If there is a gas line going to the outside it can be used for outdoor appliances. The supply issue that can arise is related to the amount of indoor appliances being used at the home. A plumber will be able the measure and determine the volume. Hope this helps!