Crack in stone house ?subsidence

[Laurahughes1]

We are viewing a property that has a crack in the stone work that we think may be caused by subsidence. If our offer is accepted, we would proceed with a survey however, I thought I would see if anyone has any information whilst I wait.
The crack is mirrored externally and internally, it has the typical staircase pattern and is slightly wider at the top. All of which point to subsidence. Does anyone know if it is significant? And whether it would be an expensive underpin (or pretty straightforward). Many thanks for reading and any advice you have.

 

[noseall]

underpin

I hate that word.

 

[Ivor Windybottom]

It would be useful to also include some less zoomed in photos to show where it is in relation to the shape of the building and the doors and windows. Although I realise that this may not be possible as it's not your house.

Does it run down to ground level? It looks like it ends at a top corner of a door or window. Does it begin again at the bottom of this window?

It looks like it's at the intersection of a flat and pitched roof, or a corner with a valley. Is there a matching crack at the other side of this part?

 

[^woody^]

Looks like thermal cracking and the mortar is too strong.

 

[Ivor Windybottom]

At first glance it does look like the stone has cracked. In fact only the mortar has cracked, the (very neat) pointing makes the mortar joints look a lot narrower than they actually are.

The cracks are all between one edge of the mortar and a stone.

 

[Laurahughes1]

It would be useful to also include some less zoomed in photos to show where it is in relation to the shape of the building and the doors and windows. Although I realise that this may not be possible as it's not your house.

Does it run down to ground level? It looks like it ends at a top corner of a door or window. Does it begin again at the bottom of this window?

It looks like it's at the intersection of a flat and pitched roof, or a corner with a valley. Is there a matching crack at the other side of this part?

I am going again on Sunday so I’ll take a video. It’s at the largest gable end of the house (in red) it runs from the ground, right up to the top.Window is on the front of the house and the crack is at the top of lounge window (in blue). There are some small hairline cracks in the motar joints on the blue side but they don’t run the full height of the house. Many thanks

 

[Ivor Windybottom]

Nice house!

If there are cracks in the blue area then that suggests the corner has sunk. Which would make sense, as it's the most elevated part.

Also look at the corner behind the lean-to conservatory, which I think is opposite the one you've shown.

 

[Laurahughes1]

I will do, I’ll have a look there too. I appreciate the reply. Thanks