I have a 100 year old sandstone cottage in Stepney (adj. Norwood), Adelaide and on the driveway side of the house I have constant cracking in various room. I fix it and within 6 months they reappear (not huge cracks but enough to be annoying to look at). I would like some good advice on a solution e.g. underpinning options (there are a few these days) or maybe it has something to do with a big tree in backyard (but don't understand why this would only affect one side of house) or drainage etc.
Can anyone recommend a structural engineer or the like who has provided good advice (and what this advice cost). Also interested to hear if the advice was implemented and if it worked.
I suspect underpinning is the solution but want to make sure I'm not overlooking what maybe a simpler less costly solution.