The pattern
Owner runs the tools, the quotes, the invoicing, the scheduling and the team. Revenue plateaus at whatever one human can sustain — usually $1M–$1.5M.
The first move
Hire a scheduler/admin who can run the calendar and chase debtors. Cheaper than another tradie. Releases the most owner time per dollar spent.
Then systems
A proper field service tool, integrated with accounting. Quote-to-cash in days, not weeks. Without that, the next tradie is just a bigger problem.