Self-Build Team in Ireland 2026 — Who You Need, When to Hire, and the Cost
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Self-build team: architect, engineer, Assigned Certifier, BER assessor, QS (quantity surveyor), solicitor, builder. Hire in order, not all at once. Hire order: architect (month 0), engineer (month 1), site assessor (month 1), solicitor (month 3), QS (month 6), Assigned Certifier (month 9), BER assessor (month 24), builder (month 9). Total professional fees: €25,000–€60,000 for a €500k build. The architect is the most expensive; the QS is the most cost-saving. Most first-time self-builders hire the architect and the builder first; the rest follows. The architect is the conductor of the team; the builder is the executor. Get references for both, visit 2 recent builds by each, and agree a fixed fee with a written contract.
TL;DR
Self-build team: architect, engineer, Assigned Certifier, BER assessor, QS, solicitor, builder. Hire in order, not all at once.
Hire order: architect (month 0), engineer (month 1), site assessor (month 1), solicitor (month 3), QS (month 6), Assigned Certifier (month 9), BER assessor (month 24), builder (month 9).
Total professional fees: €25,000–€60,000 for a €500k build. The architect is the most expensive; the QS is the most cost-saving.
When this matters most
You're at the start of the journey and need to build the team.
When this doesn't apply
You've already appointed the team.
Frequently asked questions
Who do I need for a self-build in Ireland?
Architect, engineer, Assigned Certifier, BER assessor, QS, solicitor, builder. Hire in order, not all at once. Total professional fees: €25,000–€60,000 for a €500k build.
When should I hire each professional?
Architect (month 0), engineer (month 1), site assessor (month 1), solicitor (month 3), QS (month 6), Assigned Certifier (month 9), BER assessor (month 24), builder (month 9).
Who is the most cost-saving professional?
Quantity surveyor (QS). €2,500–€5,000 for a cost plan; saves €10k–€30k in over-spec'd finishes and missing line items. The cheapest €2,500–€5,000 you can spend on the project.
Sources
Royal Institute of the Architects of Ireland, Find an architect. https://www.riai.ie/
Frequently asked questions
Who do I need for a self-build in Ireland?
Architect, engineer, Assigned Certifier, BER assessor, QS, solicitor, builder. Hire in order, not all at once. Total professional fees: €25,000–€60,000 for a €500k build.
When should I hire each professional?
Architect (month 0), engineer (month 1), site assessor (month 1), solicitor (month 3), QS (month 6), Assigned Certifier (month 9), BER assessor (month 24), builder (month 9).
Who is the most cost-saving professional?
Quantity surveyor (QS). €2,500–€5,000 for a cost plan; saves €10k–€30k in over-spec'd finishes and missing line items. The cheapest €2,500–€5,000 you can spend on the project.