In California at least, stranded is used only inside conduit for most gauges of wire, so it's seen more in non-residential. In residential, you use solid for most wiring. Stranded would only be used when you're doing things like a run that goes underground to a secondary building on the property (stranded of whatever size is needed to feed the sub panel) since you'd be running underground conduit, incoming lines, or really low gauge wires like alarms or speakers.