The following is from the Appraisal Foundation's latest USPAP Q&A publication:
Question: I recently had a client contact me and ask me to change the effective date of my appraisal, to make it one week after the effective date shown in my report. Does USPAP permit me to simply change the effective date without taking additional steps?
[Editor's Note: Standards Rules 1-2(a) -(h) set forth eight identification actions or steps that an appraiser must understand and complete in performing any appraisal assignment. Completing the first seven action steps provides support for the eighth step, the appraiser’s scope of work decision.]
If the client is asking for an appraisal with a different effective date, the appraiser needs to determine the appropriate scope of work to produce credible assignment results for this request. Such a request would need to be considered a new assignment, but that does not necessarily require "starting from scratch."
As with all new assignments, the appraiser must decide the appropriate scope of work to produce credible assignment results. This would include a decision as to whether or not it was necessary to perform another inspection, as well as the extent of any additional research and analyses that might be required.
The scope of work for the new assignment can be different from the scope of work completed in the earlier assignment. As with any assignment, the appraiser might be able to use information and analyses developed for a previous assignment.
For the complete February 2008 USPAP Q&A click here: Download USPAP_QA_Feb_2008.pdf