I've been (unfortunately) in a few houses refurbishing by now and the good workers are the ones that also know a bit about other domains in house refurbishing.

I've been (unfortunately) in a few houses refurbishing by now and the good workers are the ones that also know a bit about other domains in house refurbishing. The HVAC guy will know about wiring and the good dry wall guy will know a bit of the layman job as well. They don't necessarily have to, but the good ones will.