If your starting out on commercial cleaning. Do the obvious ways of getting clients. With little or no maney out of your pocket.
One is door to door. I prefer this because you get to see the person perrsonally. It works. I'm sure every one can agree on that. Plus if your shy. This will get you comfortable with people. This will give you the confidence you need to deal with more and different people down the road.
Craigslist. It's free. Post It. Say this is my business, my services I offer da di da di da. People will respond to you.
Cold calling. IT's another one.
Gets some business cards. Go out find the one that makes the cheapest.
Networking. THe computer free kind. You go to a business that approaches similary the same places you are trying to get but there services are different from yours. So you tell , 'Joe here's my business card. I'll recommend you when something comes up for you (Floor care, or carpet cleaning, plumbing etc. something other than your services. general office cleaning. if that is your service). You recommend me when it deals with my services. Then keep doing that over time. Who knows you can a dozen Joes' recommending clients to you.
Go on your computer to microsoft word. Write out something simple. Business name,a picture, your service. Then write out a bunch of your phone #s on bottom of the paper. Find a place where your are allowed to put one up. People will see it and take yuor #. Just something that simple.
Here's a site that helped me a lot. Lots of useful information on starting a cleaning business. Like licensing, pricing on the job, bid and follow up letter, service agreement etc. It worked for me and another person I helped out.