Quick response before I go out
FOR WHICH SEGMENT (or sub-market)?

Why are you dividing the market into segments? The subject is in an area, the sales around it form the market. Some sales sell for less, some for more. We can make graphs that lake view homes sell for 30% more than non lakeview homes. We can makee charts that homes in poor conditon sell for 30% less than homes in good condition. The problem I see is when we make charts solely based on price . "Distressed sales sell for 30% less than non distressed sales." First of all, what is a distressed sale is open to intrepration, and secondly, how do you even find out what they are, and thirdly, do they relate to your subject at all?
First we have to separate distressed sales from homes in poor conditon ( they are not always one and the same). Assuming that in your market area for now, that they are the same, what does it prove? That distressed ( poor conditon sales) are selling lower than the subject? So are smaller homes sellng for lower. So are homes without pools, when the subject has a pool. One can make charts and graphs forever proving whatever one wants . What relation does it have to the subject, and the problem at hand, market value, what price will the subject bring when put on the open market? If the distresses sales in your area are in poor conditon and your subject is in good condition, don't use them as comps. But what happens when your subject is in poor condition, then you aren't going to use other distressed/poor condition sales, because your chart says they sell for less than good condition sales? Of course they sell for less, so the question is, if your subject is in poor condition, why aren't you using them? (re you is easier than saying an appraiser, as in, why isn't an appraiser using those sales)
If your subject is in good condition, and a number of REO sales are in good condition, why aren't you using them? Because a chart said that distressed sales are selling for less? But the chart was based on a mix of distressed sales in poor condition along with distressed sales in good condition, are the results reliable?
Re, the defintion of a typical buyer of SFR is ans owner occupant where does it specify that in the guidelines or USPAP...
USPAP refers to typical buyer and typical motivation, they dont' spell out that typical buyer has to mean owner occupant.
I think we tend to think of typical as owner occupant because it was that way for many years and we are comfortable with that definition .
As appraisers, we dont' get to pick and choose market particpants. We may not like it that investors are buying and renting out, but if enough of them are in an area, they are a typical buyer. Would you talk to realtors and get information that doctors in Mercedes are buying in an area and that they pay more, and then do a chart that shows they pay more, and then decide to not include any sales to them because they paid more and are driving prices up? If enough doctors in Mercedes are buying homes in an area, then they reprsent a part of typical buyer activity in an area. We don't get to pick and choose who the buyers are, though one can make charts and excludieg entire sections of buyers , then one has produced a chart that says what you were looking for, aka doctors are paying more, yes okay we can prove doctors are paying more, but they are part of the market, so now we exclude them because they make more money than typical and thus are paying more than the "typical " buyer would? Where does it stop?
I agree that investors (who plan to rent, rehab or flip) are probably the most typical buyer of distressed properties in general (and especially REOs) in my local markets.
I do not agree that they are a typical buyer on a non-distressed property in my local market. I also do not agree that the ratios between investors and buyers seeking to purchase REOs and non-distressed are in any way, shape or form the same in any of my local markets.
What is the definition of words distressed and REO as you use it.. are distressed homes the homes in poor condition, or are you counting as distressed any home sold as an REO, even if it is in good condition?