I think it ends up coming out of your own funds though. Another thing that can happen is if you guy into build mode, and the job tracker disappears, the funds come out of your own... or... go into
Demolish their entire house. Then go back to live mode, then try again until the tracker stays up, and the money comes out of their budget again. They won't mind that you demolished their house then! Demolish the Alto house, for example, and you can get some serious money