Hi-Lo Bungalows, Hi-Lo Houses and Spanish Hi-Los came to describe story-and-a-half residences with garages. Colonial Revival and Mission Style residences most frequently adopted the bi-level profile. “La Jolla,” the house at 6 Trianon Place (built circa 1925), originally had a two-car garage.
While the phraseology seems to have originated in New Orleans, Hi-Los became a national phenomenon when direct mail catalogs adopted the expression. The Southern Pine Association first featured a Hi-Lo in its 1937 catalog, Livable Homes of Southern Pine. The Ideal Plan Service published its Hi-Lo ten years later.
Early bi-level residences in San Francisco were referred to as "Doelgers," named for the developer -- Henry Doelger -- who frequently built them. Hi-Los and Doelgers were precursors to split levels.
Image above: Edward F. Sporl. Raised Basement [“Hi-Lo”] Bungalow. Ink and colored ink on linen. Undated. Edward F. Sporl Office Records, Southeastern Architectural Archive, Special Collections Division, Tulane University Libraries.