The minimum standards and the energy program are two different things
These get run together constantly, including by people selling insulation. The rental minimum standards are a tenancy requirement administered by Consumer Affairs Victoria. The Victorian Energy Upgrades program is an energy efficiency scheme administered by the Essential Services Commission. They have different rules, different thresholds and different purposes.
A property can sit differently under each. Meeting one does not automatically mean meeting the other, and a property that does not qualify for the energy program may still have obligations under the tenancy framework, or the reverse.
Because the standards are a regulatory requirement that changes over time, the source worth relying on is Consumer Affairs Victoria rather than an insulation company. What we can tell you is what is physically in the roof space of your property, which is the fact both frameworks turn on.
What the file needs to contain
A record of what was assessed and what was installed, the product and its specification, where it went, and photographs of the completed roof space. Where material was removed, the disposal documentation belongs with it.
The common failure is not that the paperwork is missing but that it is in the wrong hands. It sits with the managing agent while the owner has nothing for their own file, and then the agent changes. Both should have it.
Photographs matter more here than on an owner-occupied job, because the owner will very likely never see the roof space themselves. Once the hatch is closed nobody can reconstruct what went in, and at sale or at a dispute that record is the only evidence there is.
Running a portfolio rather than a property
The mobilisation cost is much the same whether one house is done or four in the same corridor, so doing them together is worth the coordination it takes even when that means dealing with several agents at once.
What does not transfer between properties is the assessment. A portfolio built up over years contains houses from different decades in genuinely different positions, and assuming they are all the same is how one of them turns into a cancelled job on the morning. Each gets looked at on its own and each gets its own documentation.
Access is the other thing that decides whether a run works. Entry needs proper notice to each tenant, and a single failed entry wastes the mobilisation for the whole day. So access is confirmed first and the dates are set second.