It might be best to ring the Revenue and enquire as to why it stopped. I bought a house in 2006 (also not a first time buyer) and was also receiving TRS up until the end of 2009. When I rang the Revenue early last year to enquire as to why it had stopped, they explained it was because the rates had changed for non-first time buyers since the 2010 Budget, and since they were unsure as to whether I was a first-time buyer or not, they stopped the benefit. They did re-instate it on foot of my phone call but it was a major reduction to what I had been getting previously.