Update MVC 5.1 now supports the below approach directly, so it works for built in editor too. http://www.asp.net/mvc/overview/releases/mvc51-release-notes#new-features
(It’s either a case of Great mind thinking alike or they read my answer 🙂
End Update
If your using your own editor template or with MVC 5.1 which now supports the below approach directly for built in editors.
@Html.EditorFor(modelItem => item.YourProperty,
new { htmlAttributes = new { @class="verificationStatusSelect", style = "Width:50px" } })
then in your template (not required for simple types in MVC 5.1)
@Html.TextBoxFor(m => m, ViewData["htmlAttributes"])