Depends on how you define damage. Structural damage? Probably not much. None of the frag is big enough to compromise anything load supporting. The blast pressure isn’t that much of an issue either, it will get absorbed by the drywall and released by windows. Financial damage though? You’re looking at replacing flooring, fixtures, walls, windows, and an inspection (and possible replacement) of electrical, gas, and plumbing systems.
I think you’re over estimating the amount of damage a fresh grenade would do. You’re likely only hitting the outside of the house. That’s probably just some siding and some window damage.
Depends on how you define damage. Structural damage? Probably not much. None of the frag is big enough to compromise anything load supporting. The blast pressure isn’t that much of an issue either, it will get absorbed by the drywall and released by windows. Financial damage though? You’re looking at replacing flooring, fixtures, walls, windows, and an inspection (and possible replacement) of electrical, gas, and plumbing systems.
I think you’re over estimating the amount of damage a fresh grenade would do. You’re likely only hitting the outside of the house. That’s probably just some siding and some window damage.