That's normal.  A lot of areas are like that, just waiting for things to be mapped by a volunteer.  Mapping buildings such as houses are not super high-priority, and thus aren't mapped.

Feel free to give adding them a shot.  Unfortunately, this lack of mapped buildings is widespread and doesn't warrant a note since it is clear buildings are missing and need to be mapped.

Here's a good guide to get you started:
https://wiki.openstreetmap.org/wiki/Beginners%27_guide

Let me know if you need someone to review your edits, and I would gladly do so.