Seems if you use the MasterType directive in a content page to get a strongly typed Master property, R# intellisense will only work if the master page is called MasterPage.master. Steps to reproduce Create an ASP.NET project Add a master page, and call it MasterPage2.master Add a content page (accept default name) in the Default.aspx.cs code (E.G. Page_Load method) type Master. and you get intellisense. Go to the Default.aspx page and add, as the second line: Go back to the Default.aspx.cs code, delete the Master. entry and retype Master. After typing the . there is no intellisense. (I also found that if you go through the same steps, but call the master page MyMasterPage, then R# intellisense picks up the strongly typed Master property as the base Master type. You get intellisense, but for the wrong type.) Example source files attached.