A councillor has called into question a decision to include toxic land in the draft local development plan for the area.
The document suggests sites ripe for building on over the course of the next five years.
Politicians said the overall strategy does not provide enough attractive building sites for investors and Ayr is missing out.
Councillor Alec Clark raised concerns over why the contaminated old gasworks site in Girvan is in the document. It was most recently an NHS health centre but is now closed.
He said: “The land is toxic. This is the site of the old town gasworks. That site is lying vacant. Somebody would have to spend hundreds of thousands of pounds to decontaminate the land.”
The Girvan politician said there is likely arsenic in the Henrietta Street ground, which is owned by the NHS.
He claimed he asked council officers to include other sites in the town, but his suggestions were omitted.
He called for plots to be put forward to “make South Ayrshire more dynamic and attractive” and branded the plan as a “planners document not the council’s document.”
He added: “This covers the next five years. We need to get it right.”
His comments came after a full council meeting last month, which presented the vision which is called ‘Local Development Plan 2 .’ It aims to replace Local Development Plan 1.
But councillors claim it is more of the same.
Councillor Brian Connolly said the contaminated land in Girvan was on the first local development plan. He asks why land snubbed by investors first time round is included again.
He said Ayr does not offer enough suitable sites for house building.
He commented: “I think the town of Ayr needs a bit of a boost. There are developments in Troon and Prestwick but Ayr is missing out. There are developments all over the country but none around Ayr.”
Plans to build a new village at Corton have failed to materialise.
Councillor Connolly said the property market is not being fed the right sites in South Ayrshire.
But he voiced support for how rural areas are treated in the masterplan.
Councillors passed the LDP 2 document but want changes included as part of a consultation with the public.
Director of Place Donald Gillies said an economic downturn has had an impact on housebuilding.