I was advised by Revenue that the rate was 3% over the phone once in this circumstance, however I can find no way since of verifyong this as much as I would like. Im sure they got it wrong at the time.
5% is the correct rate today. I think the same rate would have applied in 2005. Get independent, professional advice if you are unsure. Can you subtract VAT if you are a non VAT registered regular punter buyer?
Also Monkeyboy, make sure that the % you are paying is the correct one. Often when VAT is subtracted it allows the property to fall into a lower bracket. For example the total paid for a property might fall into the 5% bracket but the VAT exclusive price may be 3% (as revenue stated). Good news for you if it does!