I am ten minutes from Platres.In the Kouris valley and it is bloody cold in the winter.I had a re roof done with pan tiles and all the roof re timbered.My original beams stayed but thy added a further 12.Total cost 4000 Cypriot.It also had to be inspected and approved by the Historical buildings inspector from Nicosia.
There are grants available for old houses of special interest,it can be up to 40% of the total cost,you do have to use recommended builders though...