Extra charges have been laid against a nurse accused of lighting a fire that killed at least 10 residents in a Sydney nursing home.

Roger Dean remains in custody and did not appear in Sydney's Central Local court this morning as the extra charges were laid against him.

He is accused of starting a fire last November at nursing home at Quakers Hill, in Sydney's north-west.

Dean was working at the home at the time as a registered nurse.

He had already been charged with 10 counts of murder, though up to 20 deaths have been linked to the fire.

Today six extra charges were laid against Deans.

They include stealing morphine, possessing and supplying oxycodone painkiller tablets and stealing eight NSW Poisons List register books used to account for the residents' pain medication.

He is now also charged with deliberately damaging property with the intent to endanger the lives of the home's 93 residents.

Dean has yet to enter a plea to any of the charges.

Today prosecutor Michael Day said the crown is ready to go ahead with the case, but Dean's lawyer asked for more time to prepare.

The court heard that a 26-volume crown brief has been served against Dean, but that information about the deaths is "still trickling in".

Magistrate Julie Huber adjourned the matter.

A spokesman for the home's operator, Domain Principal Group, says a development application is ready to be lodged with Blacktown City Council to rebuild the home.

The company has previously announced that it will rebuild the home with state-of-the-art facilities and space to accommodate more beds.

"Domain Principal Group is aware of the recent addition of charges by the crown prosecution against Roger Dean in relation to the Quakers Hill Nursing Home fire in November 2011," the company said in a statement.

"As this matter is subject to active court proceedings, it is not appropriate for DPG to comment."