A real estate unit in accordance with a particular embodiment of the present technology includes an interior region of a retrofitted garage, a reusable bathroom operably associated with the interior region, and a reusable fenestrated barrier also operably associated with the interior region. The reusable bathroom can be removably disposed within or outside the interior region. The reusable fenestrated barrier can be stationarily and removably disposed between the interior region and an outdoor area. The retrofitted garage can include a wall between the interior region and the outdoor area. The wall can include an opening having a width within a range from 2 meters to 7 meters. A path permitting a renter of the real estate unit to move between the interior region and the outdoor area can extend through the opening and through the reusable fenestrated barrier.