Front porch extension

I have made a planning application to Leicester CC for the extension to my porch from 900m to 2000m. The purpose is to allow better access for my parents and their mobility requirements both current and future. The planning authority have refused the application as its incongruous to the street scene without considering that a property only 50m away has successful extended their porch. My property is detached and at the end of a cul-de-sac adjacent to a grass verge with tall trees so its not visible from the main road. Also neighboring properties are rear facing the cul-de-sac and none of the neighbors have objected to the application.
I would like to appeal the decision as it is wholly unreasonable. Please contact me for application details, drawing and refusal decision