Hi Ciaran,
Most estate agents today won't even point out the fact that houses/apartments are timber frame! And to be honest if you are building way out the country and have the extra money for the highest level of insulation etc, then it might be alright.
You will always be told that they are so easy to heat and very, very warm and to be honest I have no arguments there. They are indeed very warm.
BUT . . . . I live in a quite exclusive estate (renting) in the south side of dublin (not that that makes any difference!) and to give you some idea of the standard of housing I'm talking about I'll tell you that the last house to be sold in the estate sold for over 850K
I live in one of the humble apartment on the estate I won't even hazzard a guess at what they would sell for.
To make a long story short we can hear every move from the apartment next door. We can hear drawers opening, doors closing, televisions, phones . . . you name it and we can hear it . . . . . . yes, I mean rompy pompy too!
It is that bad that at night I can hear my flatmate turn the pages off a book in the bedroom next door!
Also, don't be under the illusion that timber frame is cheaper that a normal block house because it's not. The only advantage to timber frame is it take a fraction of the time to build. But as far as I'm concerned a good house is worth waiting for.
I am actually looking to buy a house at the moment and I wouldn't touch a timber frame house if you paid me, infact it's one of the first questions I ask an estate agent.