The ID of your control is BuyerInspection and the type of the control is also BuyerInspection, as is the class of your page, so behind the scenes (in your designer file) you have something like this;
public partial class BuyerInspection
{
protected BuyerInspection BuyerInspection;
}
In .net you can't have a property name that is the same as the class name, so you can fix this by calling your control something else
<uc:BuyerInspection ID="ucBuyerInspection" runat="server">
which will change the code to
public partial class BuyerInspection
{
protected BuyerInspection ucBuyerInspection;
}
In general you need to employ better naming conventions anyway, I would give the control's type a name that reflects it is a control to distinguish it from the page of the same name.