This December The Market Estate Project will take over a soon-to-be demolished 1960’s housing estate north of King's Cross, and begin to transform more than 100 vacant flats, communal spaces and building facades into a creative playground for artists, designers and residents.
The Project offers artists and designers free spaces and an opportunity to freely intervene with what was considered to be one of North London's most notorious housing estates. With works starting from mid December 2009, they are looking for projects that engage and address the site's architecture, history, and community. Culminating in a one day live event in February 2010, they will invite the public to explore and experience the site and the art works, just before the bulldozers move in.
They're inviting YOU to submit proposals for artistic activity. Check out the website for more information about the project, the people behind it, and how to get involved.
Kings Cross Environment 
The website is really worth going to: if you click on the resources link you will get a pdf with an excellent history of Market Place. Well worthwhile for anybody interested in local history around this area.
I used to go to Kings Cross and the surrounding area a lot when I was younger, and even then I thougt it could do with some TLC. This looks like a very transformational project.
You should also go the website and look at the blog there. It’s very informative.