Hi nnfamily and welcome to the forum
An IVA will not affect your mortgage company, as they are secured against your property, but do check the terms of your mortgage agreement to make sure that there are no termination clauses which kick in upon the advent of insolvency.
If you cannto raise any equity against your property, creditors will generally leave it alone within the IVA, but how would you be funding your offer to creditors? I assume that you are self-employed so is your business generating profits which could be used to fund ongoing contributions to creditors.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
To have me propose an IVA for you, please visit:
http://www.melaniegiles.com/ivaEnquiry.asp
See customer feedback at:
http://www.iva.com/iva_companies/IVA_Advice_Bureau.asp