Open World Mod. Possible?

"Sofmc9;c-17682532" wrote:
This is only possible for me when you click on visit Landgraab residence and after that a loading screen comes. If you don't knock on the door, you can get your sim into the backyard or into the house, without seeing the downstairs. But you can't actually visit neighbors homes without a loading screen.

I had Sims in every district in all the worlds, so I got in by going to the far edges of homes. I am 99% certain I didn't have to go through a loading screen since my Sim was already in the district. Some homes allows a Sim to walk right up to the front door before a loading screen, somehow I found a loop hole somewhere.