Pick a building type and floor area. Your area is multiplied by a €/m² band published in the Mitchell McDermott Construction InfoCard (January 2025) or the Buildcost Construction Cost Guide (H2 2025) — indicative rates from a published guide, not figures Coira derived from award data.
Beside that estimate you get the median contract value of comparable Irish awards Coira holds. Those are two different things and the page keeps them apart: the awards carry no floor areas, so Coira cannot turn them into a €/m² rate, and they are not used to adjust the estimate.