Can a matrimonial home be legally mortgaged without the consent of a spouse? A recent Court of Appeal decision in Tanzania has reinforced the critical importance of spousal consent in mortgage transactions involving matrimonial property. The case highlights not only the legal consequences of failing to obtain proper consent, but also the protection afforded to bona fide purchasers and the remedies available to parties who suffer loss as a result of an invalid mortgage. This article examines the legal principles surrounding spousal consent, the duties of borrowers and banks, and the implications of the court’s ruling for lenders, homeowners, and property buyers in Tanzania.