When getting a mortgage you can get lost in all the terms we use in the industry. Really it is pretty simple when broken down. Basically there are 3 sets of rules for mortgage types:
1. Conventional Conforming Mortgage. This is a mortgage that is less than 417,000. Most of these mortgages are insured by Fannie Mae or Freddie Mac. Some are just kept in house with the Servicing Lender.
2. Government Mortgage. This is a category of loans that contain FHA, VA, and USDA home loans. Typically guaranteed in GinnieMae pools. These are very safe investments that are Insured by the Federal Government and also Guaranteed by the Federal Government.
3. Non-Conforming or Jumbo Mortgage. These loans are not guaranteed by any other government agency. They are typically funded with Bank Depositors money or Bank Assets. The can be sold into private pools of investments with large investment banking firms. Most of these loans are for loan amounts above 417,000 and they have a little tighter underwriting guidelines attached to reduce the banks exposure to risk.