The load they hauled from North-West Sydney represents a chance for traders and the Indigenous community to get their Mogo mojo back after the devastating New Year's Eve bushfires.

The Australian arm of Canadian company ATCO has thrown its weight behind recovery - 33 tonnes of it.

That's the combined weight of the 10 demountables which arrived on February 15 to form a pop-up mall for traders who lost everything.

"Each ATCO module weighs 3.3 tonnes and each semi-trailer weighs about 18 tonnes," the company said.

The company has agreed to help the Business Council of Australia's aid arm, BizRebuild, by donating the demountables for at least a year.

Bizrebuild chair General the Honourable Sir Peter Cosgrove (Retd) was in Mogo with council chief executive Jennifer Westacott AO as they arrived.

They greeted an emotional Mogo Village Business Chamber president Richard Adams, who shed a tear addressing the crowd.

Yuin ranger Sherrie Nye earned more than one round of applause with her moving welcome to country and speech describing those who stepped up to help.

ATCO chair and CEO Nancy Southern was dressed for a community which has endured fire and now rain: she wore pink-flowered gumboots - and then showed she meant further business by announced another $1 million donation to BizRebuild.

The fit-out of the mall is expected to take about three weeks, and will be down to Eurobodalla Shire tradesmen and suppliers.

The mall is popping up next to the Mogo Day Surgery, thanks to landholder Dr Sanjay Singh.

"BizRebuild will coordinate the construction of a temporary 30 metre x 12 metre modular building with a large roofed front veranda," organisers said.

"This will be a communal area to encourage tourists and locals to visit.

"A 12 metre by 3 metre temporary building and toilet block will also be provided for the Mogo Local Aboriginal Lands Council, which provides a range of cultural heritage, environmental, housing and education programs."

"ATCO have provided the ATCO buildings pro bono on long-term lease for 12 months, with the possibility of extension to a maximum of two years. ATCO will provide footings for the buildings, and assemble them on site," BizRebuild said..

"BCA's BizRebuild equity trust will fund the cost of transport and cranage, and the construction of the verandah and internal fit out.

"The buildings were delivered by P&S Haul-EM, a Sydney-based trucking contractor, at a discounted rate.

"Local service providers. suppliers and contractors are being used for the internal construction and setup of the Mall, many kindly offering discounted rates to help.

"Eurobodalla Shire Council have been extremely helpful in providing assistance to the planning process, and facilitating rapid approval of the Development Applications

"The Mogo Day Surgery is the land holder and has donated use of the land for two years.

"Former Mogo business owner John McAuley is donating the use of land for the Mogo LALC building.

"Brad Campbell from Involve Design providing drafting support for the design and approval process.

"Keegan Spellacy from Geoff Metzler and Associates helped with site assessment and the engineering survey.

"BizRebuild is funding the cost of transport and use of cranes, and the construction of the veranda and internal fit-out.

"Secondments were provided by: EY, Deloitte, Jacobs, McKinsey and the Australian Defence Force."