The Riverstone police station redevelopment can finally go ahead.
The Joint Regional Planning Panel approved section 96 modifications after Blacktown Council recommended the adoption of the development last week.
The panel approved the refurbishment of the existing station and a proposed new three-storey police building with basement parking two years ago.
Work was scheduled to start on the Elizabeth Street development last year but was delayed due to design changes.
The development was downgraded to two storeys and without the basement car parking to ensure project cost remains in the allocated budget.
"This provided the capacity to reduce the overall facility size," the council report said.
"The applicant has advised local policing services to the community will not be affected by these changes."
The station will service the Quakers Hill local area command.
Blacktown Council's decision wasn't unanimous.
"There is no doubt Riverstone needs a police station," Councillor Alan Pendleton said.
"But it's in a flood-prone area, when they could get a better site.
"I can't agree this be approved when they've had that much opportunity to move it to another site."
Independent Councillor Russ Dickens added: "It's flooded there before and it will happen again."
The Liberals argued it would likely be approved by the planning minister.
"This is the best course under the circumstances," Councillor Mark Holmes said.