The changeset selection was "user_id = '5008136' and tags -> 'comment' like 'shop=estate_agent -> office=estate_agent #maproulette%';" - sorry if any other changes got caught up.  I did notice https://www.openstreetmap.org/way/327309216/history which I guess might be an estate agent rather than just a property company office (and you're more likely to know than me).