Another fcpwllc !
The smallest, cold water, belt driven 4 gpm machine portable machine is going to hit your for $1500. Your insurance alone as a new guy could be more than $2 grand. Concrete? You need a surface cleaner.. there goes another $500 for a little or used one. Hoses, wands, reels.. buh bye to another $500-$1000. Now you have all your equipment, how do you plan to get customers? Better set aside at least another $1000 to get you started then dump every dime you make into more advertising. You'll be lucky to break even and maybe pay for your equipment the first year. If that doesn't scare you, welcome to the world of pressure washing !