Hi, this is certainly a more difficult situation and took me a short while to figure out, but I think that you mapped roof furniture (like building parts, HVAC systems, or walls etc.) here instead of the buildings' footprints themselves. I can see why it might be confusing, becasue some of the roofs have walls on some edges making buildings difficult to differentiate from yards in ESRI. When mapping compounds it can be accurate to map the individual buildings and walls connecting/enveloping them. 

If you haven't done so already look at bing imagery in this area to aid your interpretation. I put the primary source in the first layer and use the alt+number shortcuts to toggle supporting layers to aid my interpretation.

I also viewed mapillary street level imagery to better understand the context and I recommend you do so too. Check out the more complex roof geometries/furniture and how they compare to the footprint. This should also further convince you to map footprints slightly smaller than what you see in imagery when you see how the roofs overhang the footprins of buildings at ground level.

See how I mapped this here https://osmcha.org/changesets/171160875

Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/