Stage one of the $65 million Bowral and District Hospital redevelopment is underway.
Piling works have been completed in the past month and builders have laid the foundations for a new clinical services building.
However as the scaffolding has gone up, questions have risen about parking, construction and clinical services.
Hospital staff have started to park off-site to keep spaces clear for patients.
Bowral and District Hospital general manager Ken Barnett said there would be more parking once the building was complete.
"Once the stage one project is completed there will be more parking than there was previously on-site," Mr Barnett said.
"We're asking for people's patience in the short-term while we undertake this exciting project."
Meanwhile questions have also been raised about stage two of the redevelopment.
Questions were raised about the potential of uncovering asbestos during possible demolition works for the second part of the project.
"We're in the early stages of planning for stage two. There's a clinical planning process that needs to be followed," NSW Health Infrastructure director Greg Barlow said.
"If at the end of that the redundant buildings need to be pulled down then there will be a asbestos full investigation done of any contaminants on the site.
"It will be dealt with under the legislation and correct procedures."
When asked about the expansion of renal services, Mr Barnett said it was on the agenda however there was no time frame for the delivery of additional services.
"Earlier this year we've introduced a local chair for people to have renal services nearby," he said.
"Certainly the longer term plan is to see what we can do with additional chairs and services. It's definitely on the agenda to be looked at.
"We've been able to service four people locally which is really good for them. We're currently in planning phase to introduce more chairs and services locally."
Funding for stage two of the project also came into question last month.
The state budget papers were released in June and did not include the $55 promised by health minister Brad Hazzard and Wollondilly MP Nathaniel Smith during the state election campaign.
The $55 million commitment was made on top of a $65 million commitment to stage one of the redevelopment.
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An initial $50 million was first announced in the 2015/16 financial year and $15 million was added to the total in 2018.
The additional $55 million funding announcement brought the total estimated cost of the project to $120 million.
Wollondilly MP Nathaniel Smith made a commitment to funding of the second part of the project.
"Absolutely. When the budget papers were being prepared stage two wasn't planned in," Mr Smith said.
"With forward estimates, the funding for stage two will come over the next two years."
Construction on the new clinical services building is expected to be completed in late 2020.