Why on Earth did Mr. House fill vault 21 with concrete

[Virgil]

Why?? It's a large space why would he block it?

[di eshor ribly]

I seem to remember something about how the vault was intruding on House's subterranean infrastructure, so he bought out part of Vault Tech's property rights. It wouldn't be good for some dirty vaulties to accidentally discover his securitron warehouses.

[Herr Dethnout]

Because he's a ♥♥♥♥.

[Mechenyi]

to stop anyone from discovering the ancient underground alien city beneath vegas

[AC Denton]

Many of the residents never wanted to join House. It makes sense to fill it with concrete to make it so they couldn't go back. With the vault filled with concrete, the residents would be forced to rely on House and work under him, or leave.

Also, he wanted to give an Obsidian a plot-friendly reason to not design the entire vault. How nice of him.

[Bob of Mage]

Originally posted by di eshor ribly:

I seem to remember something about how the vault was intruding on House's subterranean infrastructure, so he bought out part of Vault Tech's property rights. It wouldn't be good for some dirty vaulties to accidentally discover his securitron warehouses.

Not just that, but it would also allow someone to get near his body. His main power supply is also a reactor buried down there (the dam might provide more power, but it is much easier to cut off, and is under NCR control).

There is a passage Benny uses to escape the Tops that leads right into Vault style tunnels. This implies that it is likely easy to get into the network of tunnels under the city if you know where to look. There is likely a lot of House's stuff down there, and it would be hard for him to keep tabs on it all.

[55zanaris99]

it was a power move by alpha house to dunk on the vault plebs

[I love Annabis <3]

It's because when you are super rich you can do whatever you want nobody can stop you money talks baby

[™]

another reason why i always kill house

[Fluffy_Llama]

a vault inside the city walls would pose a threat since his non upgraded securitrons would not be able to do anything about a locked vault filled with hostiles