to expand on zlegend's request: what do you want this 'houses system' to do exactly? 95% of the people probably have no clue what you are talking about. a little more detail regarding what you want to accomplish is needed before anyone can really help you.

what is a 'houses system' required (by you) to do? what functions do you need it to perform?

we ask these questions not to anger you or make you feel stupid, but it does sound like you are just looking for 'some code' to plug into a game and have it work. unfortunately game development does not work that easily. there is no universal 'code' (in this case) that will accomplish what you need. for people to help you, you need to provide information on what you are trying to do, so that those who contribute know what to write here.