I can help
Is the crack vertical or does it follow a stair stepped line in a diagonal direction?
Thanks for the pictures.
That is a fairly significant crack. It appears very vertical and actually has cracked through the bricks, not just the mortar joints.
Couple of questions:
1. Is this just brick vernier over a wood frame wall or are the walls actually full bear wall brick?
2. Where the crack intersects the slab foundation, can you see any differential settlement (i.e. different heights on each side of the crack).
Thanks for the link. If you look at item #6 on their list, middle picture, that is what I was asking if the crack extended down into the foundation.
Since you say you can not see any cracks in the structure you are looking, it most likely will not be a problem. Since the homes have a brick vernier over a wood framed wall, there is really not safety issue involved if a crack opens up. It would be more a cosmetic issue and functional issue, i.e. door and windows not opening easily, etc.
I would tell your home inspector of the cracks in nearby homes and have him pay extra attention to items like that. Also window and door issues.
There is no way to predict if this will happen to the house you are looking at, but if you make a very careful inspection, it will be money well spent.
Let me know if you have any more questions.
Almost all concrete sidewalk cracks at sometime in it's life. I would not be too concerned about it. It can be from a bad batch/mix of concrete, it does not need to be related to any kind of soil settlement or soil expansion/contraction.