Guess the odd one out...
Plumbing, Drilling, Bricklaying, Demolition, Plastering, Heating & Ventilation, Electrical, Roofing or Commercial Manager.
Commercial Manager. Right? Actually, wrong.
The truth is there is no odd one out! They are all specialised occupations or trades if you prefer.
Many construction businesses begin because the principal player(s) is a trade’s specialist. They know exactly how to provide their core skills and they understand that they need to charge for it.