Actually it seems Joe is not right. I emailed Revenue again to reconfirm for my records when I the deadline is in regard to rental income:
Revenue: "Individuals, who enter the self-assessment system because they have commenced to trade, have until the return filing date for the second year to submit tax returns for both the first and second year of trading (e. g. if you register for self-assessment during 2012 the due date for filing the return is 31 October 2014)."
Me: "Yes I read this, but I thought for rental income this would not be the case. Can you reconfirm for my records?"
Revenue: "The due date of October 2014 will also apply in your case."
It makes no reference to "paying", but I did unfortunately think that paying and filing were the same thing...
In reference to the term "trade", being a landlord in my eyes is "trading" anyway is it not?