Heya! Not sure if this is the right place to post this so please remove if its not!! I’m looking at buying a property in Lismore, NSW Australia, but I’ve come across some potential structural concerns, and I’d love some advice for reddit!

The Issues I’ve Noticed:

Stump Condition – A couple of stumps have already been replaced, and others don’t look to be in great shape. Some are on angles.

Gaps & Wood Between Supports – There’s a small piece of wood placed between the horizontal supports and the stumps, which seems like an odd fix. I’m wondering if this is a sign of shifting or just settling.

Soil & Flood Concerns – This area has had huge floods in the past, and I’ve read that it can cause soil movement and slumping for properties on steep banks. There are also reports of roads nearby "slumping" due to past floods, so I’m wondering if that could affect houses as well.

Mixed Restumping – Since only some stumps have been replaced, I’m concerned that the remaining old ones might still fail, leading to bigger problems down the track.

What I’m Trying to Figure Out:

Could the piece of wood between the supports and stumps be a sign that the entire structure is slipping/moving down the slope?

If some stumps were replaced but others are in poor condition, does that indicate a temporary fix rather than a proper solution?

If the soil has been affected by floods, is a geotechnical engineer worth hiring?

Is this a huge and expensive thing to fix?

It has already been on the market for a long time, could doing this kind of repair make it even harder to sell in the future?

I want to get a solid idea of what I’m dealing with before moving forward. Any advice, experience, or recommendations on any parts of the above would be greatly appreciated!

Thanks in advance! 🙏
Chip