The correct answer is "it depends."

First, what version of Poser?

Second, Firefly or Superfly render setup?

Third, are you using the Construct in Poser 11.

Does your "building" include a ceiling/roof? Are they separate materials or geometry so you can easily "turn them off?"

If you are using Superfly, I would suggest you add your building and then use Ghostship's Studio light set inside the building to get good lighting indoors.

Here's a link to those free lights: https://sharecg.com/v/86639/browse/11/Poser/Studio-Portrait-Lights-for-Poser-11-Poser-11-Pro