Questions & Answers about Я до сих пор живу в этом доме.
Literally, до сих пор means up to this time / up to now.
- до = until, up to
- сих = these (an old/archaic form of эти)
- пор = times, moments (an old form found mostly in set phrases)
Together, до сих пор is an idiomatic expression meaning still or up to this day / up to now.
In the sentence Я до сих пор живу в этом доме, it emphasizes that the situation has continued surprisingly or unexpectedly long:
I still live in this house (even now / after all this time).