Correction: first word in last paragraph should be "ask", not "as".
Additional comment: some commercial work can result simply from your emphasis on using green cleaning methods. I just booked a job, worth about $3500, because the Facility Manager of the company Googled something like "green carpet cleaning Boston" and my website came up on top. He said he read thru my commercial references, found my website overall to have credibility, and found my proposal to be reasonable.
I doubt that I was the cheapest.