It's just come to my attention - having had to put in a claim - that the excess on our house insurance is quite a bit.
How it works (and I've spoken to someone else who has the same on his policy with a different company) is that the excess is 2% of the total sum insured.
For example - our buildings cover is for 88,000 ytl so any claim would have to be larger than 1760ytl before we got any payment. Then we would only get the amount above 1760ytl!
Luckily (I think) our contents are only covered for 16,500ytl so the excess is only 330ytl.
It might be worth checking the excess on your policy when renewal comes up.
Stoop