I hope you charge them double or more your normal rate. SWOT analysis is fine, but if you thing about it that is basically what your appraisal should be doing. The only real difference is the wording. Actually one could argue quite successfully that a well written Highest & Best Analysis is a SWOT analysis.
The real question for any appraiser doing this type of analysis is, are you qualified?
What would be the agreed upon parameters?
How far forward or back in time should you consider?
What should be the physical boundaries? The neighborhood, the marketing area, the City, the County, the State, the Country, the industry, etc.?
My guess is some of the scope determination would depend on what you are appraising. A four unit apartment building would be a lot different than say a nation wide Dollar Store.
What weight do you assign to each category?
Can you predict the future of interest rates, buyer preference, new competition, another Covid or similar outbreak, etc.?-
Will you conclusion agree with your appraisal summary? Probably should.
Will the client provide you with a hold harmless if your SWOT analysis turns out to be inaccurate?
What is your liability? Might want to check with your E&O underwriter.
This is major change to the scope of an appraisal. Personally this is a rabbit hole that I am not interested in going down, but everyone needs to make their own decision.
Years ago when I worked in the credit department of a major regional Bank we were told that every loan write-up need at least three positive and three negative comments. One of the one's frequently used was that part of the collateral were title vehicles which traveled down public highways and could be involved in an accident which may have a negative impact on the business. Please provide a SWOT analysis for this possibility and let me know how it impacts the appraisal.