I'm in a situation where I'm building my business around a regular job. As it stands the max I can borrow is about £46,000 (damn UK, I earn half of that/year!), based on my current salary. I would like to quit my job in the near future to focus on my startup. Would there be any implications to worry about with regards to my mortgage if I was approved then quit shortly afterwards, provided I was still making the repayments with ease?
You mention that you would quit right after getting approved. But in the United States there would be one last check as a part of closing. Therefore it would be best to wait until after closing to quit your job.
Waiting until after closing would also protect you from some hiccup that causes a delay in closing, thus requiring the need to reapply for the loan.