Cert 4 doesn't say what you are saying. Neither does the FNMA Selling Guide.
you know, I made the statement once, when teaching CE, that the cost approach was meaningless - and was instantly chided by a gentleman who worked for the Texas Land Board, who asked me, "how would you propose appraising a state prison?" To which I responded - "Ok - maybe it is applicable in certain situations." Still don't think it has any merit for a residential home appraisal, 1004 or not. What you're doing sounds like much more than a residential assignment, though...
You said we are "certifying" that we gave no weight (dumb term I never use, FWIW) when that may or may not be the case. This is pre-printed stuff on a Fannie Form. The Selling Guide states:
"
Fannie Mae does not require the cost approach to value except for the valuation of manufactured homes. However, USPAP
requires the appraiser to develop and report the result of any approach to value that is necessary for credible assignment
results. For example, when appraising proposed or newly constructed properties, if the appraiser believes the cost approach
is necessary for credible assignment results, then the cost approach must be provided. Appraisals that rely solely on the
cost approach as an indicator of market value are not acceptable."
A GSE cannot trump USPAP.
IMO the forms work for the appraiser, not the other way around. I have zero hesitation to contradict a form's verbiage if/when the situation dictates it.
These same posters who circumvent Cert 4 , have no problems calling an appraiser a liar , when, they do not take an original comp photos.