text: a bulder prepair an apartment for 10000 dollar the work cost him 12000 he told the customer butdidnt agree? there are legal agreement beteen them that the customer will by 10000 but the repair cost the buldir 12000 put the customer didnt agree to pay the extra money he promised to pay 1000 because he was impressed by the work but he didnt pay you said yourself that the builder agreed to accept 10k for the work.  if the work costs the builder more than that, through no fault of the customer, then the builder has screwed up and gets to eat the loss.  the builder is lucky the customer paid some extra, because there was no legal reason he could be forced to do so.  the builder needs to be more careful about the deals he makes, make sure he estimates job costs better, and maybe include something in the agreement about handling cost overruns in the future.