The feature (https://www.openstreetmap.org/node/6047930732) has a note tag linking to this Te Ara article: https://teara.govt.nz/en/photograph/13429/mitchelltown

Maybe the tagging could be downgraded to neighbourhood, and/or the historic element could be reflected in the tagging. Or the element could be deleted entirely.

I don't have the local knowledge to make the call