I find it amazing the original appraisal passed through their review process, and now they could be looking to scapegoat you to take all the blame when they deserve some themselves.
TJ is giving you (Tharax) a significant benefit of the doubt.
I'm not surprised the appraisal went through. Not all appraisals are reviewed to any great detail. This is a case where you probably wish it were.
On the positive side, you did not try to hide or overlook this potential illegal unit, so it wasn't intentional "fraud", just an honest mistake of how it was handled.
On this, I agree with TJ. It wasn't fraud (an ethics violation... obviously the worst of the worst).
There are (IMO) three types of appraiser errors:
Ethics (everyone agrees this is not an ethics issue).
Competency (I think this is the issue).
Oversight/lack of due diligence (this is rushing a job, or going through something really quickly and missing a detail).
I think this is a competency issue.
No intent to mislead.
Not a consequence of being rushed or missing something (checking the wrong box).
Applying a valuation process which is not consistent with the recognized methods, not one that would be done by a peer, and not one that the client expects to be performed.
If you knew better, and someone pushed you into doing this, then that would be an ethics violation.
If you simply rushed the job and incorrectly put the GLA together (which has happened to some forumites), that would be a due diligence issue.
In this case, you thought it was acceptable. That's competence (as harsh as it sounds).
For a fact, you are being forthright in identifying the error, and being genuine (as I far as I can tell, and I'll take it at face value that it is the case) that you recognize the error. I respect that.
And, by the way, when I say this is a competency issue, I'm not saying you are an idiot. I am saying, professionally, you did something that a peer wouldn't do because they would have realized it was incorrect.
Ok, that's my two-cents on what the issue is. You want advice on what to do about it.
Obviously, you recognize the error and won't do it again.
I'd call my E&O and ask for advice; only because I'd want to know from them if I should admit I made a mistake or not. Everyone always says, "don't ever say you made a mistake". That may be the right tack to take in this case. But, unless there is something more, you made a mistake; one that cannot be explained away.
If you don't admit it, that may create hard feelings with the borrower and with your client/employer (many will say the borrower is not an intended user... and they'd be right. However, I'd say the borrower may have a legitimate beef here, intended user or not).
If you do admit it, you may be putting yourself on the losing end of some litigation action. So call them and ask them what you should do.
Regardless of admitting a mistake or not, I'd ask my client/employer what they think I can do to right the error. I'd be willing to do most anything that is ethical and reasonable to make good on the error.
I'm of the mindset that aggressively trying to fix/address the issue is better than trying to hunker down. But that's me. I might be wrong. You really should contact your E&O or some other legal representative to get their advice.
Good luck (and I mean it!).
Denis