There is no party wall of hers being fondled. You would be obliged to pay for her surveyor if her walls were implicated, but by the sounds of it, they aren't. So... sausages?
What about the foundations though for the extension? I suspect he may need an agreement because of that issue.
@princeperch started
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There is no party wall of hers being fondled.
You would be obliged to pay for her surveyor if her walls were implicated, but by the sounds of it, they aren't.
So... sausages?