Re: old house rennovation
Some people would argue that an architect might have no role in such a project, that in those days master builders built such dwellings, but its a bit like asking why you'd ask a specialist mechanic and/or a coach builder about refurbishing an old car. Someone who knows about such things should always be asked.
In particular, do not rely solely on the advice any builder who may have served his time in the last twenty years. He may not know about
(i) the kind of materials used [the type of mortar for example]
(ii) the many pitfalls of traditional detailing [how to repair lead valley gutters for example] and
(iii) the generic faults of older buildings [the absence of damp-proof courses and barriers, building in of timber joists, the use of timber binders in walling, etcetera.
A previous poster likened it to a labour of love. Fail to take competent advice, commission a building survey and get proper costings prior to purchase, never mind commencement and it might become a black hole into which you could sink far more than €200,000.