Thanks for mapping. 
Some remarks.
Esri imagery should be used. Read the instructions please.
Your mappings are very rough. You mapped complete plots as a building, despite they exist of several buildings, courtyards and walls.
Pleas map more accurate next time.
Check this page to see your mappings and the adjustments which I had to make.
https://overpass-api.de/achavi/?changeset=165845855

best regards