Look for dirty windows for a start. Don't get discouraged. If you go to an estate that's pretty well covered, your not going to get much joy.
When I started, I looked in the local papers to see where houses were for sale on new build estates. New builds are the only way your going to get a compact domestic round without buying one. Saturday and Sundays were the best for me when canvassing. People are more relaxed then, rather than when they have just got home from work. If you don't quit, you'll win. Dai