Is the property jointly owned Michael or just in your wife's name? If it is just in her name, then it should be exluded from your IVA and so long as you maintained your commitments during the IVA your wife's property would not be under any risk - but I agree with the others that issues like this are usually best shared with your partner as you are bound to need their support throughout the arrangement.
The IVA documents are contractual, and therefore as long as you keep your side of the bargain creditors cannot change their minds at a later date. Best to take direct advice from an insolvency practitioner who will make sure that you are fully appraised of all of the debt solutions currently available to you.
