I do it all the time. If a home is a low Q3 and I have mid range Q3 or high Q3 I will explain the adjustment. For example I am doing a ranch home that is a low Q3. It has many aspects of a Q3, but the roof lines etc are fairly simple (a Q4 look). On the other hand I have a comparable Q3 that is really a high Q3 due to higher vaulted ceilings and more varied roof lines. I will explain it and then make an adjustment. The basis for the adjustment may be market sensitivity, but I may also use a cost analysis and instead of saying “good” I will give it a rating of “good/very good” on the cost book. Then I’ll see the cost difference and adjust accordingly. I live in a rural area so I have to make these kinds of adjustments. Not all Q3’s are created equal.
This is also true for condition adjustments. And FAnnie Mae and Freddie Mac know this. And this is the problem with the rating system. In days past I would state in the grid “good” or “good+”. Can’t do that today. We can’t say Q3.5 vs. Q3.
In more homogenous markets or where one has an abundance of similar sales this may not be necessary. But in rural markets where comparables are limited you MUST be willing to make quality and condition adjustments even though they are rated the same Q or C.
This is my biggest gripe with ratings that are so hard and fast. It’s also why I really like not doing UAD appraisals when I have more freedom to grid comparable sales with more creativity.
I struggle daily with the ratings, because I know I have to live with the rating for a long time. I have often regretted the rating I’ve given it. This is especially true where homes are hard to classify. I call them the in-betweeners. Do I rate a home high Q3 or low Q2? Sometimes not so easy to know.