1. Making arrangements
Once you move in, there will be lots of red tape to cut your way through:

1) Turning on your electricity, gas, and water
Contact each utility office in your city. Because most of these offices will not employ any English speakers, we suggest you to get a Japanese speaking friend to help.

　・ Tokyo Electric Power Company
　・ Tokyo Gas
　・ Bureau of Waterworks, Tokyo Metropolitan Government

2) Application for a Certificate of Alien Registration and change of address
Go to the municipal office of the city you have just moved to and register for your Gaijin Card. You will be able to get all the information and materials for applying at the office.
　
3) Opening a bank account and/or changing your address
Go to the bank of your choice, and take with you your passport, signet/seal stamp (if you have one), Certificate of Alien Registration, or Certificate of Items Stated in Alien Registration Original Slip. Some banks will allow you to sign your name instead of stamping your seal. However, if your bank does not allow this, you can buy and use a stamp which has any Japanese name. Be careful not to lose it, though, since it will be required whenever you withdraw cash (not including ATM) or when you close your account.
When you move, you'll need to visit your bank with your bankbook and your seal, and register your new address with them.
　
4) Changing the address on your driver's license
This can be done at the local police office in the town you have just moved to.

2. Greeting your landlord
When you move in, it is common courtesy to greet your landlord. Especially in Japan, first impressions are very important. It's nice to bring a small offering or gift, such as some sort of sweets.

When moving into a new house, especially in a rural area, you might have to introduce yourself to your neighbors too.

In case of emergency, it is your landlord or neighbors that help you most. Having a good relationship with them is important. If they like you, they are more likely to tolerate whatever you may do.