Earlier this week state-owned Permanent TSB launched new loans for buy-to-let investors. It comes as rents have been rising in Dublin and there have been concerns about a shortage of residential properties for tenants.
Mr Noonan made his comments ahead of the Eurogroup meeting of euro zone finance ministers in Brussels.
"The economy is being repaired all the time and decisions like that by the banks are commercial decisions which are monitored by the Irish Central Bank. If the regulators in the Central Bank are happy then I'm happy," the Minister said.
He said that some of pressures are evident already.
"Rents in Dublin are going up. So to lend on favourable terms to the buy-to-let sector seems to me to be addressing a problem in the rental market. And I would hope that would lead to the stabilisation of apartment rents as extra apartments are provided," he said.
The Minister said prices for some property was below the cost of building. He said there was not a boom and "prices were barely getting off the ground."
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