@Flewflew said:
…While we wait for a solution, we have asked the EC/Strata Manager whether we can temporarily use the communal garage which is empty. We want to provide a legal letter stating the terms of use, to enable us to proceed….
In the ACT (and I would guess NSW has something similar), the EC can approve a special privilege for ‘minor’ use of common property so long as it does not unreasonably interfere with the use and enjoyment of the common property by others. I would have thought the EC could resolve to allow you to use a garage that is temporarily not being used by other owners. They could include conditions such as vacating as soon as the garage is ready to be used by other owners, not impeding the required repairs or whatever else might be necessary to ensure your proposed use does not interfere with anything else etc.