Six or seven years ago when I first started, I knocked on doors for about a one week period.
Even now I can trace the amount of business that I got from that cold calling, which including referrals , to about 15% of my annual total.
I was quite careful in selecting properties that didn't have curtains drawn or not calling during probable meal times and always in daylight. If the door was opened I always made sure that I stood well back to allow people space and a non threat zone ( there are articles on doorstep protocols)
I explained that the reason why I called was just to delay the time that it would take for them to put my mailer in the bin, and to change the odds slightly. I told them I was local, just started, completed the NCCA course and would be delighted to provide a free quotation or advice. If they had no need, maybe they could keep my mailer in their cleaning cupboard.
If somebody expressed an interest, I made an appointment with them to call again, so they were under no pressure. I had no adverse results.
Later I joined the Trading Standards 'Buy with Confidence' scheme and when they suggested they were adverse and even objected to 'cold calling' I asked what business did they run. At the time it would take some time for me to get into phone directories etc. I did not have a shop front presence and therefore suggested that they tell me better ways to generate start up business.
I was given a letter by them to say that it was OK to call to promote myself but not with the intention of obtaining orders then and there on the doorstep
Regards to you all
Eddie