Metro 2 Account Type Code 17: Manufactured-Housing Loan

Specification

Code	17
Meaning	Manufactured-Housing Loan
Field	Account Type (Field 15)
Record	Base Segment
Length / position	2 chars · 84–85
Category	Mortgage and Real Estate
CRRG reference	CRRG Exhibits 1 & 2 (Account Type Codes)

The financing structure, not the building, determines how it is reported. A manufactured home can be titled personal property or affixed real property.
A chattel loan on a home in a leased-land community is personal-property lending with an installment shape.
A manufactured home permanently affixed to land the borrower owns, with the title retired into the real property, is financed as a mortgage.
Does NOT cover a recreational vehicle used seasonally. That is recreational merchandise under 11.
Does NOT cover a home-improvement loan on a manufactured home already financed elsewhere. That is 04, or 05 when FHA insured.

1A specialty lender reports a 20-year chattel loan on a manufactured home sited in a leased-land community.
2A bank reports a 30-year mortgage on a manufactured home permanently affixed to land the borrower owns, with the title retired.
3A credit union reports a chattel loan on a single-wide unit where the borrower rents the pad.
4A lender reports an FHA-insured manufactured-home mortgage where the unit and land are financed together.
5A servicer boards a manufactured-housing portfolio containing both chattel and real-property loans and classifies each by its actual structure.

Classify by financing structure, not by the type of dwelling. Two loans on identical homes can legitimately carry different Portfolio Types.
Apply one rule consistently across your portfolio and document it, because a mixed convention is indistinguishable from a data error.
Do not report the K3 segment on a chattel loan reported as Portfolio Type I. K3 pairs with Portfolio Type M.
Do report the K3 segment when the loan is a genuine real-property mortgage, so the lien position and property indicator are visible.
Do not use 11 for a manufactured home occupied as a residence. Recreational merchandise is a different collateral class.

A file can be structurally valid and still be wrong. These are the cross-field conditions Account Type Code 17 has to satisfy.

The Appendix A source permits Portfolio Type I (Installment) OR M (Mortgage). Choose I for a chattel loan on a home titled as personal property, and M when the home is affixed and financed as real property.
Under Portfolio Type M the K3 segment becomes relevant, carrying mortgage identification number, mortgage type, and property indicator. Under Portfolio Type I the K3 segment must be absent.
Both Portfolio Types require a Scheduled Monthly Payment Amount and a numeric Terms Duration in months, so that pair is required either way.
Credit Limit must be zero-filled under either Portfolio Type. Neither chattel nor mortgage financing carries a line.
Highest Credit / Original Loan Amount holds the original principal and does not move as the balance amortizes.
Terms Frequency is normally M, and terms of 240 to 360 months are common on both structures.
Do not flip a single loan between I and M across cycles. If the title is retired mid-life, treat the classification change as a documented one-time event, not a monthly toggle.