Alright to clarify the House Rules,
1. You can not change Unit pay.
2. House traits must be kept as they are.
3. No attacking the Imperial Eye until at least two turns after they have been taken by a new minister.
4. You may not reload the saved game file, and begin your turn again, just because you don't like the way your turn is going. Nor may you play a turn repeatedly in order to explore more territory.
5. No selling ministry resources. Otherwise, a minister can sell resources belonging to his ministry, adding the money to his house coffers. It is OK for your house units/cities to consume ministry resources.
6. You may not deliberately leave your ministry cities, resources or spaceships undefended and open to capture by an ally, or by your own forces once your term of office is over. This is a devious way of transferring ministry property to the control of your house.
7. You must leave an open route to each of your labs. Surrounding a lab with cities or units, or putting it on a single-hex island, means that the Church's Inquisitors will not attack it if you research a proscribed technology. Taking advantage of this fact would make the Church's proscriptions irrelevant.
8. You may not deliberately starve your cities in order to start a plague, aiming to infect other players' cities and units too. This is a sneaky trick which undermines the value of plague bombs.
9. You may not start building a unit with the specific intention of cancelling the build. This is a sneaky way to transfer resources from one location to another, since the resources used to build the unit reappear in the building city, and are not returned to their original location.
10. No selling maps to the Vau. Selling maps to the Vau is money for nothing. It has no cost associated with it. Therefore it's just pointless mouse clicking.
11. The Regent may not declare himself Emperor in an election year. If he does so, the usual 10 turn delay before he becomes Emperor is not enforced.
12. A noble may not vote unless he has been on the surface of Byzantium continuously since the previous election. He is banned from voting even if he took off and landed again in the same turn. If a noble is allowed to stay in orbit or jump around the surface of Byzantium, it's too easy for him to avoid assassins. You can consider this rule to be a statute of the Imperial constitution.
13. You must lower the cost of Conscript Levies from 15 to 5 a turn.
As you can see with a couple exceptions, most of these rules are pretty standard.