Direct Labour vs Main Contractor in Ireland — Cost, Time, Risk, and the Hybrid Route
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Main contractor: 12–18% on top, saves your time. Direct labour: cheaper, costs you 20+ hours/week. Hybrid is most common.
Main contractor: 12–18% on top of build cost, saves your time. Direct labour: cheaper, costs you 20+ hours/week for 9–15 months. Hybrid: most common in Ireland. You sub-contract groundworks, frame, and infrastructure directly; main contractor takes the build from weathertight onward. Direct labour requires you to act as PSCS (Project Supervisor Construction Stage) and to manage the trades yourself. Most first-time self-builders underestimate the time commitment of direct labour. Be honest about your time and experience before choosing. The main contractor premium is real money, but it's also buying your time and reducing your risk.
TL;DR
Main contractor: 12–18% on top of build cost, saves your time. Direct labour: cheaper, costs you 20+ hours/week for 9–15 months.
Hybrid: most common in Ireland. You sub-contract groundworks, frame, and infrastructure directly; main contractor takes the build from weathertight onward.
Direct labour requires you to act as PSCS (Project Supervisor Construction Stage). Be honest about your time and experience before choosing.
When this matters most
You're choosing the build route.
When this doesn't apply
You've signed the building contract.
Frequently asked questions
What is the main contractor's premium?
12–18% on top of build cost. For a €500k build: €60k–€90k. Saves you 20+ hours/week of project management for 9–15 months.
Is direct labour cheaper than main contractor?
Yes, by 12–18%. But you spend 20+ hours/week project-managing for 9–15 months. Most first-time self-builders underestimate the time commitment.
What is the hybrid build route?
You sub-contract groundworks, frame, and infrastructure directly. Main contractor takes the build from weathertight onward. Most common in Ireland. Combines the cost saving of direct labour with the time saving of a main contractor for the critical phases.
Sources
RIAI, Form of Building Contract 2012. https://www.riai.ie/
Frequently asked questions
What is the main contractor's premium?
12–18% on top of build cost. For a €500k build: €60k–€90k. Saves you 20+ hours/week of project management for 9–15 months.
Is direct labour cheaper than main contractor?
Yes, by 12–18%. But you spend 20+ hours/week project-managing for 9–15 months. Most first-time self-builders underestimate the time commitment.
What is the hybrid build route?
You sub-contract groundworks, frame, and infrastructure directly. Main contractor takes the build from weathertight onward. Most common in Ireland. Combines the cost saving of direct labour with the time saving of a main contractor for the critical phases.
When this matters most
You're choosing the build route.
When this doesn't apply
You've signed the building contract.
Where to go next
Next decision
The next step in your build sequence.