If I was going to be home while the new doors were installed, I would put them in the bedroom. If I had to go to work I would take them to the vet's for the day. I wouldn't trust anyone in the apt. for not opening the doors. They would be safe being boarded. Maybe you can pick them up early. If your gone have someone call you as soon as the doors are on and pick up the cats then. Good luck If I lived close to you I'd come and sit with them in the bedroom all day for you.