Like I said before, the CU will violate the UAD definitions. A C1 is a home up to 1 year old. C2 is a home from 1 to 5 years old, or has an effective age from 1 to 5 years. A C3 is a home that has an effective age of 25 years or less. C4 is a home over effective age of 25 years. C5 and C6 are for homes that are in need of extensive repairs or unlivable.
These are the new standards that CU will judge us on. FNMA will not tell us these new definitions in public (Lack of Transparency is running rampant), but that is part of the programming of CU. If your home is 10 years old and needs repairs, you should call it a C4 under UAD definitions, but you will probably get flagged under CU. Of course if you have a good explanation you will be OK.