Hi,

Some of the geometry doesn't quite join up - building:part=* not all nodes stuck to the building=*.

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Some construction tags remain https://www.openstreetmap.org/way/1155425844
https://www.openstreetmap.org/way/507542421

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Is that representative of what is happening on the ground?

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Are the roof sections made from concrete? https://www.openstreetmap.org/way/1283611314

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Should the façade be a simple line, not a polygon? https://www.openstreetmap.org/way/1283611312

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Thanks!