The sisters, Jillian and Lindsay Wiener, 21 and 19, died in the fire, which swept through the rental on Springs Lane early Aug. 3, 2022.

The historic Upper East Side site has just reopened as a hotel-and-condo property after shuttering during the pandemic.

With the houses now complete, the contestants moved on to overhaul the communal areas. The prize on offer could change the outcome on auction day.