Expressive Annotations Issue

Property.cshtml

@Html.EditorFor(x => x.NewRenovationConstruction, new { options = yesNoListItems, @class = "radio-inline", @data_bind = "" })

PropertyViewModel.cs

[Serializable]
public class PropertyViewModel : FormGroupViewModel
{
    /// <summary>
    /// Gets or sets the new renovation construction.
    /// </summary>
    /// <value>
    /// The new renovation construction.
    /// </value>     
    [UIHint("RadioButtonList")]
    [RequiredIf("RenewalFormGroupStatusId == 3", ErrorMessage = "Please provide an answer before completing the application.")]
    public string NewRenovationConstruction { get; set; }
}

RadioButtonList.cshtml

@model string
@using System.Collections
@using System.Web.Mvc;
@{
    var list = (List<SelectListItem>)ViewData["options"];
}

@foreach (var item in list)
{
    var cssClass = ViewData["class"] == null ? "radio-inline" : ViewData["class"];
    var value = ViewData["value"];

    <div class="@cssClass">
        <label>
            @{
                var radioId = ViewData.TemplateInfo.GetFullHtmlFieldId(item.Value);
                var checkedClass = (item.Value == Model ? "checked" : string.Empty);
                var required = (ViewContext.ViewData.ModelMetadata.IsRequired ? "required" : string.Empty);

                <input type="radio"
                       id="@radioId"
                       name="@ViewData.TemplateInfo.HtmlFieldPrefix"
                       value="@item.Value"
                       data-bind="@ViewData["data_bind"]"
                       onclick="@ViewData["onclick"]"
                       @checkedClass
                       @required />
            }

            @item.Text
        </label>
    </div>
}