While the offence already carries a fine of $519 - the highest for this offence in the country - as of Monday, those caught will also receive a demerit point on their licence.

"I have made it very clear I'm outraged by able-bodied people who steal disabled car parks just to make their life easier," Roads Minister Duncan Gay said.

"These people selfishly deny vulnerable members of our community close access to buildings and sufficient room to get in and out of their vehicles - they are low-lifes, simple.

"Clearly, hitting their back pocket doesn't stop this behaviour so I'll hit them where it really hurts, their licence."

It is a significant issue in Wollongong, with council officers issuing an average of more than two fines a day.

In 2013-14, council rangers issued 766 fines to people parking in disabled parking spaces without the appropriate permit.

So far in this financial year, 326 fines have been issued.

Leanne Cowan, NSW regional services manager for Spinal Cord Injuries Australia, said the government's action was long overdue. She supported any move by the government to ensure those spaces were left for those who really needed them.

"The thing about accessible spaces is it's not always about proximity of a space to the closest door - it's about the width of the space," Ms Cowan said.

"It's to enable the removal of equipment and the manoeuvring of people so they're not going to damage other vehicles or property.

"Often they're in sheltered areas, too because it takes someone a little bit longer to get out of the car and into a wheelchair. If it's raining, it gives them a bit more shelter."

Quadriplegic Richard Kramer said it was a great decision.

"When I heard they're going to do demerit points, I thought this might finally make people sit up and take notice," Mr Kramer said.

"I'm all for it, I think it's a great idea."

He added that those people who had disabled stickers and used the spaces when they were not driving a disabled person "should lose double points".

The government's move was also supported by the NRMA.

"Disabled parking spots are there for a reason - to make getting around a little easier for people who need it," NRMA president Kyle Loades said.

"Parking in these spots illegally is poor form and I'm pleased the government is slapping a demerit point on those who are caught parking illegally."