I'm going to summarize what I learned so far:
1. Most likely, immigration won't check to see if the TM.30 you provide for the 90 day report matches with what's in their computer. But there is always the chance that an attentive officer will notice the discrepancy and not let it slide.
2. When doing the annual extension, most foreigners take the time to make sure the TM.30 they provide matches with the immigration computer's records.
3. If you own your own home, you can file the TM.30 on your own behalf since you are both the owner and the foreigner. The simplifies the TM.30 since you are not dependent on another party to file the report.
4. Since I am staying on an Elite Visa, I don't get the benefit of the annual extension. #2 doesn't apply to me. I have to leave the country every 365 days and upon my return, my landlord must submit another TM.30 to immigration.
One of these days, I'll purchase a small condo. This should simplify reconciling what's in immigration's computer database and the TM.30 I submit for my 90 day report.
Thanks to everyone for their input.