Lupine architecture evolved from their traditional pack structure, where a whole pack/extended family lived in one long structure, maybe multiple ones in a larger settlement. Even when they moved onto separate homes the houses are usually attached. This is true in both urban and rural situations. There is a practical reason for this apart from just tradition. Houses built in a row are only exposed to the weather on two sides in the cold regions Lupine often live. There can be as few as two houses, or up up to dozens in these rows.

~Top right is the most primitive version. A long bark covered structure with only minimal divisions between each family's living space.
~Bottom right is a more advanced(relatively) version in a civilized region, albeit a humble one. Wood shingled stick framed or log construction, entirely separate living spaces. Might have modern conveniences, though that depends on the region. Often these won't have fire walls. And its not unheard of for a whole row to burn down from one house fire.
~Top left is what the wealthy Lupine would build. Built in stone with fire walls in between each unit. Usually these would be in larger towns or cities. Though not always.

These Lupine rowhouses come in many forms in between those pictured. From the top of society to the very poor, often borrowing architectural aesthetics from other styles.