HI, Alex; NO, I am using SurfaceController with ajax. View:

 @inherits     Umbraco.Web.Mvc.UmbracoViewPage<IHaveSiteViewModel>
@{ 
      Layout = "_Layout.cshtml";
}
@using (Html.BeginForm())
{
 <div id="mySiteList">
     @Html.Partial("MySiteList", Model)
 </div>
}

Partial View:

 @inherits Umbraco.Web.Mvc.UmbracoViewPage<IHaveSiteViewModel>
 @foreach (var site in Model.MySitesList)
 {
    <div class="media-object stack-for-small">
        <div class="media-object-section">
            <a href="@Url.SurfaceAction("EditRoomDetail", "RoomSurface", new { siteID = site.SiteID })">
                <img class="thumbnail" src="">
            </a>
        </div>

    </div>

}
<button type="button" class="button" id="addNew">Add New</button>

ajax call:

 $("#addNew").click(function () {
           $.ajax({
            url: '/umbraco/surface/RoomSurface/IHaveSite',
            type: 'post',
            datatype: 'json',
            processData: false,
            success: function (resultData) {
                if (resultData != null) {
                   $("#mySite").html(resultData);
                }
            }
        })
    })

Action Method:

  public ActionResult IHaveSite()
    {
        .....
        IHaveSiteViewModel mySite = null;

         mySite = new IHaveSiteViewModel();}

    }

 Where: In IHaveSiteViewModel:

   public IHaveSiteViewModel()
        : base(Umbraco.Web.UmbracoContext.Current.PublishedContentRequest.PublishedContent)
    {

    }

Cheers Robert.