Principal lawyer Kathryn Emeny said Maddens was focussing on farming or agri-business operations affected by the border closure.

"We've become aware of ongoing impacts to farmers and agri-businesses in the Victorian-South Australian border area," she said.

"The impacts include the level of disruption and length of time the closure has been going on for and it has led to concern."

Ms Emeny said registrations were open to anyone but the law firm had a particular focus on people with properties affected and cross-border work.

"It is quite early days but we have had interest from businesses and contractors who are trying to navigate through the restrictions," she said.

"We're keen to hear from people as soon as possible."

Registrations can be made through maddenslawyers.com.au/sa-vic-border-closures

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