If I buy a property with five flats and then split the titles and try to get 5 BTLs mortgages for the flats: would there be an issue with mortgage providers not being willing to provide mortgages in the same building?
Simple answer - yes. This issue confuses a lot of investors.
Commercial lenders happily give one mortgage against the whole building on a single title. So no need to go through the title-splitting exercise.
The purpose of doing such a title split is usually to uplift the value of each individual flat, but how much are you increasing the overall value by doing so, compared to leaving it on a single title? A commercial valuer will be able to give you both values to give clarity on that. Balance that with all the legal costs involved in setting up five leases - and perhaps a Ltd Co too, if you don’t already have one.