I know what you mean, where I park at work is quite similar. As a idea could you not put up a 'temp' garage. I mean a gazebo or similar. Or even a timber 'shed' type thing big enough to drive into. Temporary structures wouldn't need planning permission, but I think there is a limit to the size you can go, but a gazebo....... (like the ones that Halfords use. Or even a retractable sun shade, like the ones shops use, but that would depend how close to your house you park.