11:39 Aug 15, 2010 

I have been doing a bit more research, it seems this is s Spanish invention that is effectively handing the government role of urban planner over to a private company who can identity a bit of land for "urbanisation", and do all the things normally done by the government (compulsory purchase orders, zoning, dividing the land into plots, putting in roads and infrastructure etc.). This company can also be the property developer i.e. construct the buildings, or may sell on the urbanised land to a third part developer. It's a system with apparently some scope for abuse and speculation, and the European Union has criticised it, using the term "urbanisation agent". It's literal, but if the EU uses it, I think it'll do for me! Thanks a lot anyway!

http://www.europarl.europa.eu/sides/getDoc.do?type=TA&refere...

http://www.rankia.com/blog/echevarri/419096-agente-urbanizad...

12:37 Aug 13, 2010 

Given that we are dealing with the formalities surrounding buying/selling/owning property, you might consider just “real estate agent” with your source term in parenthesis or explained in a footnote.

12:17 Aug 13, 2010 

Thanks for ideas so far I did see the other KOG, and I have been translating it quite happily as property developer throughout the document until I hit this sentence. I just feel that "property developers" or "developers" in general have always existed and this refers to some special legal definition that existed in Castile-La Mancha and has now been adopted into Spanish Law. Some kind of official or authorised developer maybe? Perhaps someone out there with more knowledge of Spanish real estate law than I have may be able to help.