The roofer leaves the gutters loose. The painter covers a sill that was already soft. The floor goes down before anyone checks the subfloor. Each crew did its own job, and the house still leaks.
When one company holds the whole contract, those handoffs are ours to get right. We sequence the work so each trade leaves the next one a clean start, and we look at the layer underneath before we cover it.
You sign one contract with one price. You get one schedule, one person to call, and one warranty that covers the work as a whole.
If your project only needs one trade, go straight to that specialist above. Same company, same license, same people.