Weekend Paint and Carpet?

Seems like you could argue it either way. Is the suite being isolated from the rest of the physical building during construction? If so, it would seem to qualify as an alteration, even if you are not worried about isolating from occupants.But to that point, it's being isolated from occupants by way of doing the work on a weekend, so it does seem like you meet that criterion.

I would agree that it could be argued both ways, but lean more toward it counting as a facility alteration. Since users could not occupy the space during the work, the isolation is being done by schedule rather than physical barrier, which is very common in commercial offices and schools. Even if done after hours, this kind of work can have huge impacts on occupant health and comfort - thus we have IEQ credits for low emitting carpet and paint. Seems like the intent of setting a criteria for significant alterations is to avoid tracking the minor ones with little impact on IEQ and track only the ones that do, which would seem to be the case here.