Can A Person Legally Lock You Inside Their House Knowing There Is No Way Out?

This is illegal here in America, there are things that he will be charged with, like unwillful detention, and stuff like that, he should be told about this, that it is illegal here. Hope this helps, and if he doesn't change the habit, you might just consider turning him in for it. Good luck to you.

The Fire Department and County Building Code inspectors would write him up for that.  It may also void an insurance policy.  It's a serious safety issue, not having ready access to exit a building in an emergency.

No. You cannot hold someone against there will. If the police were to be called he could be charged with unlawful detention or even kidnapping. Depending on where you live as each State has different law the consequences could be drastic.

Wow that really stinks. If I were you I would go the fire or pd tell them your situation. And ask if there is anything that can be done like a random safety inspection. Or you can fake an emergency. To get the ambulance to come or something like that. Good luck