The City of Naga provides public domain wms/wfs for the whole city.
http://www.openstreetmap.org/?lat=13.62492&lon=123.19091&zoom=15&layers=0BFT
http://gis.naga.gov.ph/nagacity_data.map
Thanks to Ivansanchez, we were able to import the dat to OSM. The features includes roads, rivers, railroads, schools, hospitals. More will come later.

However, some previous data we already uploaded by another contributor. This should be edited as there are duplicated ways as a result off the import.