We don't report any construction loans (except a couple of construction to perm loans)
Per GIR "Transactions Not to be Reported" (Pg. 8 2013 GIR) -
The following transactions are excluded from reporting under HMDA:
*Construction loans and other temporary financing.
This is also reiterated in Appendix C under 14(d) "Excluded Data"
As you stated in your post, "The extension is emant as temporary extension to allow the borrower to get permanent financing."
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The opinions expressed are mine, do not represent the opinions of my employer, and they are not to be taken as legal advice.