system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why didn't the weaslys build a bigger nicer house?

Why not use magic to build a really nice house?
gpt
They kind of already did... the house was built by Mr and Mrs Weasley from the ground up and mostly held together with magic - they loved it and the location, and expanded it as they saw fit. Obviously they where not architects so if they did decide to build again it would probably have the same ramshackle appearance. 

Also the size of the place wouldn't have been an issue if Molly swallowed.