Blower Door Test - Meaning of the Result

We have built massively KfW 70 (2017). What does that mean? Is that good, ok or rather so-so?

For comparison, our house, sand-lime brick + ETICS, KfW70, completed June 2016: n50 = 0.70 h^-1.

At our place: 0.47 Leaks that still need to be fixed: At the front door seal there is a draft => will still be adjusted. And below the kitchen window draft => will be additionally sealed with SIGA before the kitchen countertop is installed. Our inspector only gets values under 0.50 about 10 times a year, while he performs about 150 BD/year.

There is a draft at the front door seal

Most tests are therefore conducted through the front door.

Is the blower test always conducted only after occupancy, or when is the ideal time?

Before those parts of the construction that are supposed to ensure airtightness are no longer accessible. How else should one find and fix the leaks? For example, drywall should not have been started before the [BDT], if there is a vapor barrier foil behind it. After moving in is at least unusual, I would say.

After moving in is actually too late because then potentially leaking spots have to be cut open and repaired again. You can then clean/paint again depending on the spot...