Small mortgage loans cater to borrowers looking to buy a lower-cost property, such as a condominium or a modular home. However, many lenders have a minimum amount you can borrow for a mortgage. Thankfully, there is a handful of national mortgage lenders that offer lower loan limits. What is a small mortgage loan? A small mortgage loan — often referred to as a mini mortgage, micro mortgage, or small-dollar mortgage — is a home loan for a small amount. The exact figure or minimum amount that constitutes a ...