Concrete holds on to algae, rust, tyre marks and years of general Florida grime, and it happens slowly enough that most people stop noticing until they see it half done. We use a rotary surface cleaner rather than a wand, which is what gives you an even finish instead of the stripes you get from someone waving a pressure washer around. A standard driveway is $89. Large ones, three cars or more, run $119 to $149. Add the front walkway and porch for $40 to $70, or the sidewalk for $30 to $60, and it all gets done in one visit.