A heritage group has called on the State to purchase a property for sale on the Great Blasket Island.

Fondúireacht an Bhlascaoid (The Blasket Foundation) says the purchase of the ruins of a cottage and associated land is crucial to the establishment of a national park on the island.

The property comprising the ruins, three fields and a share of 42 acres of commonage has a guide price of €110,000 euro.

The house is located in the old village and originally belonged to the Ó Catháin family.

It is situated between the King's house and another house known as An Dáil.

The State currently owns over two-thirds of the island.

Lorcán Ó Cinnéide of Fondúireacht an Bhlascaoid (The Blasket Foundation) said the State has a duty to purchase the property and continue with efforts to develop a national park on the island.

"We believe there is a danger that if the property is sold privately that the new owners mightn't be aligned with the ideas and vision we have as regards the conservation of the island and establishment of a proper national historic park in the future," Mr Ó Cinnéide said.

Minister of State for Tourism and Sport Brendan Griffin said he believed the State should purchase the property.

"I think it would be a good investment. We have an opportunity to develop a national park. I think it is at a reasonable price and I think it's a chance the state should avail of as it may not be there again and it's something I think we should act on."

The Office of Public Works, which already owns 17 of the 25 holdings on the island, says it is aware the property is for sale but that no decision has been made to submit a bid.

"The OPW has purchased many properties on the island and now owns the greater part of the island.

"In this particular case no decision has been made yet to put in a bid for this property but we'll certainly be looking at it very closely and talking to the parties involved," OPW Chairman Maurice Buckley said.

In the 1990s the State's attempt to compulsorily acquire the island properties and develop a national park failed when a group of landowners challenged the acquisition in the courts.

The Supreme Court upheld a High Court decision which deemed the Blascaod Mór National Parks Act 1989, introduced by then taoiseach Charlie Haughey, to be unconstitutional.

The State did eventually purchase 17 of the 25 holdings in 2009. The remaining holdings remain in private ownership.

The auctioneer overseeing the sale says there has been significant interest in the property, especially from potential buyers in the US.