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How much does it cost to build a house in Ireland?

There is no fixed national figure. The build cost of a house in Ireland depends on floor area, specification, site conditions, location and the level of professional and statutory fees involved. The most reliable way to price a project is a quantity surveyor's cost plan based on your actual drawings, benchmarked against published SCSI cost guidance and CSO construction price indices.

Build cost in Ireland is normally expressed as a rate per square metre of floor area applied to your design, then adjusted for the things that are specific to your site. Two houses of identical size can differ substantially in price because of ground conditions, distance from services, the standard of finishes, the heating and ventilation strategy needed for Part L compliance, and regional differences in labour and subcontractor availability.

It is also important to separate the construction contract from the total project cost. The builder's figure typically covers the structure and finishes described in the tender documents. Site purchase, site clearance, connection charges for water, wastewater and electricity, planning and building control fees, design and certification fees, VAT, furniture and landscaping usually sit outside it and must be budgeted separately.

What determines the cost of a house build

The main variables in an Irish house build budget are:

  • Gross floor area and the shape and complexity of the design
  • Ground conditions and the foundation type they require
  • Whether services are available at the boundary or need long runs and connection agreements
  • Specification level for windows, insulation, heating, ventilation and internal finishes
  • Regional labour and subcontractor market conditions at the time you go to tender
  • Professional fees, statutory fees, levies, VAT and contingency

Getting a reliable figure for your own project

Published averages are useful for early feasibility only. Once you have sketch drawings, a chartered quantity surveyor can prepare a cost plan for your specific design and location, and that cost plan can then be tested by competitive tender. The SCSI publishes periodic construction cost and tender price commentary, and the CSO publishes material price indices, both of which help you sense-check quotations and understand whether prices are moving.

Build a contingency into any budget. Even a well-designed project can meet unforeseen ground conditions, planning conditions with cost implications, or price movement between design and construction.

Sources

Last reviewed 25 August 2026. General information only — not legal or planning advice.

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