The new site at the memorial's conservation storage in Mitchell, is set to house a P-3 Orion surveillance aircraft, multiple helicopters and even a F18 hornet jet fighter.

The Parliamentary Standing Committee on Public Works heard on Friday the project is expected to cost $16.1 million and would be completed by December 31 next year.

The new hangar will address a storage shortfall for the memorial of 1807 square meters at the Treloar Resource Centre, with the collection growing 400 square metres per year.

Part of this is due to the simultaneous retirement of large defence materials such as airplanes or helicopters.

The Mitchell site is already home to a Japanese battle tank captured in World War II, an armoured personnel carrier damaged by an IED in Afghanistan and helicopters used in Vietnam.

The new hangar, at 5240 square meters, will add another 8.6 years of storage capacity to the memorial.

Overall, this would add an estimated 66 years worth of storage across all the storage sites in Mitchell.

The committee heard a larger site was preferred but the redevelopment was limited to space and the amount of capital made available from the memorial.

Submissions papers show $150,000 is to be spent installing solar panels on the rooftop of the building which the committee heard would pay for themselves in ten years.

The facility would also be open to pre-scheduled tours for the more enthusiastic of Australia's war history buffs, but Treloar opens in entirety annually for the 'Big Things in Store' open days.

On Friday the committee also heard a proposed $33.9 satellite dish development near Wagga Wagga would allow Australia's defence force to transmit more data between forces.