The space under the owner's outdoor electricity meter is broken. Is it reasonable for property electricians to charge 20 yuan for repairs?

This is reasonable. Although it is outside your home, it is also your private property. Behind the water meter is personal private property. As soon as the key is turned, well, there will always be a house. If there is a problem with the single blank house in Yanjiao, you can contact the developer for maintenance. If you finish the renovation at this time, or if there is any problem with your rough house, you should be responsible for it yourself. Whoever charges is responsible for management and who uses it, although your switch is public.