Getting views data using Entity Framework is very slow

Question

I'm working on an ASP.NET MVC 4 application in which I'm trying to create a dashboard that reads from 2 database views; one view lists buildings with counts and goals, and another lists floors of those buildings with counts and goals. I'm trying to combine them on the dashboard, so I created a datamodel called DashboardView which holds the buildings with the floors in a Children property.

It works fine enough locally, but deployed on a production IIS server it runs incredibly slowly, and I'm not sure if it's due to inefficiencies in the way I'm accessing the data:

using (var db = new MyDBContext())
{
    var views = (from building in db.BuildingViews.OrderBy(x => x.BuildingName) select new { building })
                .AsEnumerable()
                .Select(bldgView => new DashboardView
                {
                    ViewType = "Building",
                    ViewLabel = bldgView.building.BuildingName,
                    CurrentCount = bldgView.building.Count,
                    GoalCount = bldgView.building.Goal,
                    Children = (from floors in db.FloorViews.Where(v => v.BuildingId == bldgView.Building.BuildingId) select new { floor })
                                .AsEnumerable()
                                .Select(floorView => new DashboardView
                                {
                                    ViewType = "Floor",
                                    ViewLabel = floorView.floor.FloorName
                                    CurrentCount = floorView.floor.Count,
                                    GoalCount = floorView.floor.Goal
                                }).ToList()
                }).ToList();

    double totalBldgCount = db.BuildingViews.Select(x => x.Count).Sum();
    double totalGoalCount = db.BuildingViews.Select(x => x.Goal).Sum();
}

Is there a better way to create the data package I'm trying to achieve here, or is the issue possibly related to multiple people hitting the database at the same time?

::EDIT::

I understand now that using .AsEnumerable() could be a culprit of poor performance; however I'm struggling to understand how I can properly construct my DashboardView with child DashboardView objects without it, as this does not work:

var query = (from buildings in db.BuildingViews
            join floors in db.FloorViews on buildings.BuildingId equals floors.BuildingId
            select new DashboardSprinklerView
            {
                ViewType = "Building",
                ViewLabel = building.BuildingName,
                CurrentCount = building.Count,
                GoalCount = building.Goal,
                Children = (floor from floors select new DashboardSprinklerView
                {
                    ....
                }).ToList()
            }).ToList();