Frozen water pipe repair in the master bath, outside wall, or in the floor. Water was shut off when I arrived, and I determined that it would be better to isolate the separate lines in the basement with 3/4” shut off valves to get the water turned back on and return when weather hits better conditions above 0 with wind chill. When we return, we will have to do an investigation, including cutting open walls, ceiling, and possibly cabinets and garden tub tile decking, to find and repair the leak. The decision to hold off on repairs is to prevent possible freezing with these temps after repairs are made and having to come back to make more repairs because of cold weather. Water has been turned back on to the home, and all fixtures are usable except the master bathroom.