Noted on this, thank you! I actually followed Yivan000’s diary on mapping subdivisions in the Philippines, link provided below: 
https://www.openstreetmap.org/user/Yivan000/diary/401100

As much as I’d like to fully align with the building tags suggested, the OSM wiki also indicates the use of addr:housenumber=*, reference here:
🔗 http://bit.ly/49w2yAc

Additionally, I tried looking for addr:lot=* in the OSM wiki but only found addr:plot=* being documented. Happy to hear more thoughts on this!