Can you buy or sell a house in Bulgaria if it has an outstanding mortgage?

Yes, it is possible. Having a mortgage will not affect the purchase or sale of the house in any way. When signing at the notary, the bank holding the mortgage will receive the full mortgage amount, and the costs of legally closing the mortgage are paid by the seller. It is possible to purchase a property with a mortgage and transfer it to the new owner, in which case the amount of expenses for the new owner will be significantly reduced compared with standard registration. Re-registering a mortgage costs considerably less than taking it out originally.