We are in the process of buying a new build flat with HTB from a small local developer in North London. Price agreed two months ago however we've been struggling to get a mortgage. We are now in a position to find a lender but DH thinks property prices (and specifically new build) are 10% lower than two months ago. I'm worried to lose the property but DH is convinced that the closer we get to Brexit the better the market becomes for buyers.
Has anyone been renegotiating an agreed price? Can we rely on the lender's valuation to see whether value has changed?