Our house is sale agreed, the buyer has viewed the house twice and offered well above the asking price (there was a bidding war!). She's had a survey done and it came back with no issues (the surveyor was very thorough) we've had a lot of work done so it's all up to standard. However, she now wants to come around with a friend who's an electrician to inspect the electrics because she thinks they've been there since the house was built in 1890. We've clarified that isn't the case, especially in the extension that was built five years ago! We've agreed that she can come around with the estate agent but I'm worried that this is just the first thing she will want to inspect and nitpick.
Is this a usual thing to request as a buyer?