For a project involving multiple trades, you have two main options: hire a project manager who supervises without executing, or a general contractor who does everything. Let’s break it down.
Definitions: Who Does What?
The Project Manager
The project manager is your conductor. They:
- Write the specifications for your work
- Launch tenders to multiple companies
- Compare quotes and advise you
- Coordinate and supervise the site
- Control work quality
- Accept the completed work
They do NOT carry out the work themselves.
The General Contractor
The general contractor is your single provider. They:
- Provide a global quote for all work
- Execute work with their teams or subcontractors
- Coordinate interventions internally
- Bear overall responsibility for results
They carry out AND coordinate the work.
Detailed Comparison
| Criteria | Project Manager | General Contractor |
|---|---|---|
| Role | Supervises and controls | Executes work |
| Independence | Total (no conflict of interest) | Uses their teams/subcontractors |
| Price | 8-15% of work value | All-inclusive fixed price |
| Choosing companies | You choose on their advice | They choose subcontractors |
| Number of contracts | Multiple (1 per company) | One only |
| Responsibility | For coordination | Overall for results |
