Is this creditor listed in your proposal? If it is, they are bound by the terms of the iva and your ip will sort this out as they cannot place a charge on your property post-iva acceptance unless the iva fails. Try not to worry x
Speak to your IP about this immediately. As Broke says, if it's included in the IVA then they cannot put a charge on it.
Are you up to date with your mortgage payments? Could it be anything to do with that?
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk
Compulsory house sale isn't something I've heard of in an iva - this is more usually associated with br. Are you thinking instead of the equity release clause? If you are not able to remortgage creditors will normally agree to a 12 month xtension rather than see yu sell your house.