Dan/Fla,
In response to your request to be corrected if wrong:
From HUD Handbook 4000.4 (DE Handbook)
"If the underwriter concludes that the appraisal report findings are inconsistent, or are otherwise unacceptable, he may contact the appraiser or return the case to the appraiser for reconsideration. The underwriter may also add comments or corrections to modify or amend the report by using the "Direct Endorsement Underwriter/HUD Reviewer Analysis of Appraisal" form (see Appendix 15). Comments or corrections must be supported by HUD valuation policy and adequately documented. This includes the adjusting of value, the removal or addition of repair requirements, and the overall determinations of property approval and rejection. However, it does not include using the Chief Underwriter's prerogative described in HUD Handbook 4125.1; this is only available to HUD staff. The appraisal report itself should not be "marked up" or changed in any way by the DE underwriter."
From HUD Handbook 4125.1
1-3. MODIFICATION OF REPORTS. If, in reviewing a case, the CU concludes
that the findings are inconsistent, or are otherwise unacceptable,
he may modify or amend any report; return any report for
reconsideration; or prepare a complete new report himself.
a. CU Prerogative.
(1) The CU may amend, modify, or correct findings to reflect *
the conclusions which in his judgment are proper.
However, his authority to raise value estimates is limited
to $1000 or 3% of the Chief Appraiser's approved
valuation, whichever is lesser. This authority shall not
be exercised more than once in connection with any one
property prior to insurance of the proposed mortgage, and
shall not be used in connection with groups of properties.
(2) The limitation on the use of this authority in the case
of groups of properties does not apply when subsequent
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HUD-Wash., D.C.
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4125.1 REV
(1-3) applications on individual properties are received from
owner-occupant mortgagors. Authority to raise valuations
* is given to the CU as a matter of policy and does not
involve valuation techniques. He may, therefore, raise
a valuation even though the value reported has been
limited by the Estimated Replacement Cost of Property.
The authority is given primarily to expedite processing
through elimination of counterproposals in cases where
the difference in the amount applied for and the amount
of the commitment permissible under the value reported
is such that either figure would be regarded as a
reasonable and accurate estimate by well informed,
competent individuals who have no interest in the
transaction or parties thereto.
(3) This authority may be used by the CU at his discretion,
with due regard to the Assistant Secretary-FHA
Commissioner's interest, for reasons other than expediting
processing if in his opinion its use is warranted. This
authority may only be delegated to the Deputy (or
Assistant) CU.
To summarize, a DE underwriter would be a bit dumb to increase a value.