re: Anyone do pressure washing as a side business?

Such a saturated business. Even lawncare guys and businesses are offering power washing as an additional service. You have to have commerial-grade equipment to knock out the work fast enough to make a profit. I've seen a small crew do the yard while one guy powerwashed the sidewalk and driveway, all finished together and the yard probably had less sq. footage than the concrete. 4000psi/4gpm pressure washer with a surface attachment. You'd have to figure out a niche or find good equipment cheap. Pressure washers are very easy to repair, my eye is looking out for one that's pretty much busted except a good frame to rebuild with.