Networking is key for properties that one would desire. The key is finding a commercial property that is willing to pay for proper care that also benefits you. Anyone can give there work away which has happened IMHO in the commercial world since the economy crashed. VC, Villa and Sons, Nannak"s started eating into each others profits trying to obtain the work.
There are commercial accounts out there that understand you get what you pay for. The key is find those. Networking will lead you in the correct direction. Another key is being able to offer the total package to make life easy for the property mgr, this means having a PCO sub, a irrigation sub lined up and ready to bid so that you can make the bid all inclusive, this lets the property mgr worry about one less thing.
Also even though you do not currently have any commercial, have letters of recommendation ready to go from your homeowners. Many commercial properties will not even consider you until they can feel confident that you have the resources to handle the amount of work that they can throw at you, IE if you get a HOA can you deliver 65 yards of installed mulch on moments notice? When they decide they want it often they are not willing to wait, they want it now, not when you can fit it in.
Lat but not least, I will advice you that commercial can be profitable, but remember that the numbers must be there for you and you must be set up to lose that account at a moments notice. Can you afford to put all your eggs in one basket?