CostYou're considering a property that doesn't fit the standard single-family or condo mold — a fractional-ownership share, a multi-unit residential building, or a mixed-use property with both residential and commercial space.
Fractional ownership
Fractional ownership — where multiple buyers each own a share of a single property, common in some vacation-property arrangements — is financed differently than sole or joint ownership of a whole property, and far fewer lenders offer products for it. Confirm early whether traditional mortgage financing is even available for a specific fractional arrangement, since some are structured in ways that don't fit standard residential mortgage products at all.
Multi-unit residential buildings
Small multi-unit residential properties (a duplex, triplex, or fourplex, for example) are generally financeable with standard residential mortgage products if you'll occupy one unit, but larger multi-unit buildings typically shift into commercial mortgage territory, with different qualifying criteria, down payment requirements, and often shorter amortization periods than a standard residential mortgage. The exact cutoff varies by lender.
Mixed-use properties
A property combining residential and commercial space (a storefront with an apartment above, for example) often requires commercial or specialized mixed-use financing rather than a standard residential mortgage, since the property doesn't fit neatly into either category. Lenders may assess the residential and commercial portions somewhat separately, and the commercial component can bring a different down payment requirement and rate than the residential portion alone would.
Who to ask
For any of these three structures, work with a mortgage broker who specifically handles non-standard property types early in your search — not every broker or lender regularly finances fractional, larger multi-unit, or mixed-use properties, and finding the right one before you're deep into a specific deal saves real time and risk.