even though you were in the house and nowhere near the car at the time, how can that be considered your fault.
Yes, my dad watched my next door neighbour reverse into his car from inside his house and had to declare that as a non fault claim has been made. The neighbours insurance company (admiral) then rung my dad to go through the claim and even asked if he was injured in the accident!
Some companies will then charge you more for that being on your record as supposedly you're more likely to make another claim now, but some won't.