In my Node/Express.js project I can set the views folder globally like so:
app.configure(function() { app.set(\'views\', __dirname + \'/views\'); .... sn
The 'views' setting is the root directory, so you should be able to specify a sub-folder in the hierarchy:
app.get('/', function(req, res) { res.render('areaName/viewName'); });
It means your 'areas' need to be sub-folders, but it allows you to accomplish the separation you are looking for.