As Near as We Can Figure, This is the Northernmost House in Michigan
The northern point on the Keweenaw Peninsula is along M-26 approaching Copper Harbor. There are a few houses along that lonely road along the shores of Lake Superior. This house, located at 74.479411 is, by a scant few decimal points of latitude, the northernmost house in Michigan as near as we can tell.
The spot is east and north of Eagle Harbor between Dan's Point and Devil's Washtub. The Washtub is a can't miss but often overlooked spot along M-26. Michigan Tech describes it as
Devil’s Washtub (also “Sloshing Whatnot”) is a wonderful example of a Blowhole within the Copper Harbor Conglomerate. With strong waves the spot is very exciting! In calmer moments it can be a spot for swimming and one may pass through a lake arch of conglomerate, or the arch may be filled with loose gravel.
Parking is very limited and the site is unmarked, but is opposite the Dapple Gray B&B, where M26 turns south away from the shore about 2 mi west of Copper Harbor.
While this house isn't listed for sale, in fact there are very few houses, for sale or not, along this stretch of Keweenaw back country, you'd have very few neighbors but scenery that is unlike anything else in Michigan.
Are there any houses located north of here and still in Michigan? It doesn't appear so. While there may have once been residences on Isle Royale, the national park no longer has any permanent residents, making those living at the very tippy top of the Keweenaw the state's northernmost homeowners.