In my game there is a part where after you talk to someone they walk to their house and i got that part but when hehits the door i want him to be transfered into his house. Now i go into the event screen and then make a transfer event but it will only let me transfer the even to somewhere else on the same map but i need him to be transferred into his house please help.

This may sound a little counter-intuitive, but bear with me.

Don't try to relocate the NPC into the house.

Erase the graphic of the event, and turn a switch ON.

Then, inside the house, have an event that only displays that NPC's graphic when the switch is ON.

Yes, more than one event is playing the NPC. That's fine. It's normal. It's how things work.

Events are events, while NPCs are beings of the story that can be played by multiple events, monsters, and sometimes even party members.

Events are the hands that hide inside the sockpuppet. The graphics are the sockpuppet.

The NPC is the character that you write in the story, using various Events and maybe other commands.