How much would this cost? Again, 100,000 homes built at €250k each would cost €25 billion - which the State doesn't have - and only knock a dent in the housing shortage.
The ESRI predicts that we will need to build 30,-35,000 houses a year over next decade.
https://www.irishtimes.com/business...e-prices-does-not-signal-new-bubble-1.3128452
It doesn't say that they all have to be built by the State.
Nevertheless, even if the State buit 30,000 houses, by your figures that reduces to €7.5bn pa.
Furthermore, your €250,000 figure is debatable given the ownership of land by the State in the first place.
Nevertheless, an injection of a €7.5bn building programme, or even half that could overheat the economy.
Its not so much that the State 'cannot afford' it - most of it will return to the State in income tax on wages, VAT, CT etc. It is more of a case of the State not having the capacity to deliver such a large amount of housing without overheating the construction sector once again.
So the State should measure its capacity to deliver housing, and then the type of housing it wants to deliver - typically 2/3 bed townhouses and apartments.
Once it begins delivery of housing it should tender to property management for the maintenance of quality accommodation based on most competitive rental prices - competition (who can offer the cheapest rents).
The State will receive a steady income stream, off-setting over a long period of time, the build cost.
Laws to be strengthened for property managers whose tenants are engaged in anti-social, criminal, property destruction and refusal to pay rent.
Laws to be strengthened against property management who fail to provide the minimum standard of accommodation and associated services as outlined in their tender submission.
The State will insure for structural defects that occur over lifetime of property.
The State will insure the property management for non-payment of rent where the tenant is shown to be in financial difficulties and unable to pay (as distinct from refusing to pay).