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How much financial information should a buyer give an estate agent?
My guess is they are fishing for business for their in-house finance person. In the UK, all the estate agency chains (and many of the smaller outfits) have financial advice firms they are affiliated with, often to the extent that a desk in each branch will be for 'the finance guy' (it's usually a guy). The moment you show any sign of not quite having the finances for a place you like, they will offer you a consultation with the finance guy, who "will be able to get you a deal". On commission, of course. What you need to say with regards to financing is (delete as applicable) "I am a cash buyer" / "I have an Agreement In Principle". And that's it. They do not 'need' to know any more, and they are under obligation to pass your offer on to the vendor.