Wagga councillors agreed to join forces with Wagga Rugby League at a meeting on Monday night after the association offered to complete two long-awaited projects on the council's behalf.

The upgrades will include the construction of the southern hill and the installation of more than 2000 new seats, which brings the ground's capacity to about 12,000 people.

It comes at the perfect time as the city prepares to welcome back the Canberra Raiders next year, for the second clash in a row.

Wagga Rugby League's chairman Warren Barclay said the association also plans to install additional seating on the eastern and western ends.

This will increase the total number of fixed seats at the grounds to 2372.

"We salvaged these seats out of Allianz Stadium earlier this year with the vision to add them to the McDonald's Park," Mr Barclay said. "It is something we have been wanting to do for years to make the park an even more accessible ground for all community members.

"We will be adding another 418 seats and 14 disabled seating spaces to the west, and 1200 seats to the eastern side of the ground."

As part of the approved contract between the league and council, new concrete paths will also be installed to connect the eastern and western seating areas via the northern and southern hills and a storage facility under the existing Country Rugby League office will be built.

Mr Barclay said the construction of the southern hill will mean the south-east canteen will be repositioned in order to better utilise the new space.

"This transformation has been decades in the making," he said.

Wagga City Council's strategic asset planner Ben Creighton said it was a "major win" for both the council and league fans, who are preparing for the return of the NRL premiership fixture featuring the Canberra Raiders next year.

"The council is committed to ensuring McDonald's Park is recognised as one of the premier rugby league facilities in regional New South Wales," he said.

The new upgrades come as part of the council's plan to spend in the vicinity of $1.7 million on improvements at both the exhibition and equex centres.