I think that the last time as was at Lowe's, I saw some "build it yourself" backyard sheds that were a good size for four or five bikes. If I used something like that, I would also still use a hefty chain to lock all of the bikes together inside the shed. That way, if a crook broke into the shed, he would be faced with carrying out all of the bikes in one heavy, bulky bunch...crooks are lazy, so hard work may send them elsewhere.