Asking how long it will take to get a mortgage can be a little bit like asking how long is a piece of string. As a general guide, once your application has been submitted it can take anything from a couple of days up to several weeks to receive a mortgage offer.
Usually the lender will organise the valuation to be completed within a week of the application being submitted. Running alongside this the lender will assess the application and submitted documents. If your situation is fairly straightforward in that you have a clean credit file, you’re employed in a stable job, and your outgoings are fairly minimal, you should expect the mortgage assessment to be completed fairly quickly.
If on the other hand you’re self employed and your income varies from month to month, you have other financial commitments, perhaps a recent change in your personal circumstances, then it can take longer as lenders will likely be raising questions and asking for submission of additional documents.