Government TDs are among those to express reservations over yesterday's Budget announcement to put a levy on concrete products.
Minister for Housing Darragh O'Brien defended the introduction of a 10% levy on concrete blocks, pouring concrete and other concrete products to offset the cost of the €2.7 billion Mica grant scheme.
However, the Fianna Fáil TD for Limerick city Willie O'Dea says he believes the levy should be abolished, pending further discussions within Government.
"This levy will undoubtedly be passed on to consumers," he told RTÉ's Drivetime.
"It seems to me to run contrary to the Government's policy to make housing affordable as possible. You don't make something affordable by increasing the price of a basic ingredient.
"I would welcome a discussion with the minister about it. It is said the levy will bring in €80 million a year - but that's a pretty small amount in the context of €11 billion that was announced to be spent yesterday in the Budget. It will take a long time to pay the €3 billion for this scheme if you are only taking in €80 million a year."
"I want to see it scrapped basically but I'd like to see some discussion first to see if there's any logic to it that's not immediately recognisable," he added.
It is believed Fianna Fáil TDs James O'Connor, Jackie Cahill and John McGuinness are among those to also hold concerns over the proposed levy.
Fine Gael TD for Mayo Alan Dillon also wants to see the levy revisited.
"The move is shortsighted in the midst of the housing crisis and with the increases we see around building materials and with inflation biting. The consumers will suffer at the end of this.
"The Departments of Housing and Finance should look at more sustainable measures to fund the Mica redress scheme," he told RTÉ's Drivetime.
Mayo is one of the counties worst affected by the defective blocks crisis and while Deputy Dillon says he would like to see some consultation with the construction sector on how to fund the scheme, he believes a 10% levy is too big a burden at this point.
"It needs to be revisited and deferred until we see a rebounce in our construction sector. It was very surprising. It was one backbenchers were very angered by. Our constituency office has been inundated with first-time buyers who could be hit with an additional cost," he added.
"The quarries need to be accountable for their actions," he added, comments echoed by Fine Gael TD for Fingal Alan Farrell.
The President of the Society of Chartered Surveyors Kevin James said the levy could slow down the Government's own Housing for All Plan, by adding approximately €4,000 to the overall cost of building an average sized home.
Mica Campaigner Paddy Diver also expressed concern that the levy could ultimately hinder homeowners in repairing homes affected by defective blocks.
Minister O'Brien said more details on the levy would be forthcoming in the coming weeks.
"The details of the working of the levy itself and its application will obviously be brought forward by the Minister for Finance in the Finance Bill, but we estimate the revenue raised from this would be to the tune of approximately €80 million", he told RTÉ's News at One.
"And we put that in the context of the defective concrete block scheme, which rightly I have amended to help homeowners in affected counties get their lives back together and put their homes back together, will probably cost in the region of €2.7 billion."
The minister said the levy was on concrete products, not on all materials, and the estimated cost increase was 0.4% to "the concrete products that might be used in some homes".