OpenStreetMap Ireland are happy to be working with OSMUK board who have set their quarterly target to map buildings in the north. A new mission/task has been created on the OSM Ireland Task Server to keep mapping coordinated.
The City of Derry/Londonderry sits on the river Foyle, only a few miles from the border in Ireland. The task is a joint initiative of osmIRL and osmUK as both chapters are active and interested in mapping the area. There is some good detail on buildings, especially on the east bank of the Foyle. However, parts of the middle of the city are not mapped, and this may involve mapping tall buildings, terraces, as well as semi-detached houses. Follow the tasks instructions on the use of tags.