Monday, April 29, 2019

Homebuyers Must Validate BPOs and Appraised Values at Self-directed Valuation Sites

Instead of blindly accepting some model-driven estimates from online brokerage sites (we all know those estimates are not explainable) or totally relying on salespeople's comps, prospective homebuyers MUST do their own validations at a Self-directed Site. A free Self-directed Site will allow users to go through the valuation process in a step-by-step manner with the following FOUR steps:

1. Defining the Subject:  Subject property info in Public Records is often unreliable. As a prospective homebuyer, you must do your own research (MLS vs. Public Records, etc.) to validate the actual data, particularly the quantitative data (Lot size, Gross & Net Bldg size, Year Built, etc.). In Self-directed Sites, you can define/enter your own research data, without being forced to accept the data from Public Records. Here is an example of the basic subject data that you will be entering into a Self-directed system...

(Click on the image to enlarge)

2. Selecting Comps:  A list of sales - by default - does not become comps; nor do some cute model-derived estimates provide true home values. Comps - however close they are to the subject - require proper selection and adjustments. In a good Self-directed Site you will be allowed to enter your own comp selection and adjustment criteria. Here is an example...

3. Selecting Final Five:  The concept of Spatial comps (picking comps right off the map) is always a better way to zero in on the final five as it helps avoid picking comps from the "other side of the freeway" which could be an incompatible economic neighborhood, thus inflating or deflating the value of your subject. Here is an example...

4. Comps Grid & Value Analysis:  A good Self-directed site will offer a full range of statistically significant parameters including the percentile curve, rather  than just the average of the adjusted comps. Loosely speaking, 25th to 75th percentile range caters more effectively to the informed buyers, while 5th to 25th is more meaningful to investors and 75th and above is a potential companion for those bent on outbidding the competition. Here is a snapshot of a meaningful comps grid with line-item adjustments and final value analysis...

I picked the above graphics from as I own and operate it, to avoid having to deal with any copyright issues. My Homequant site is totally self-directed (no modeled values), totally free (no strings), and requires no login or registration whatsoever. Please choose the self-directed site that works best for you.

Note: All adjustments in Homequant are linear. In Automated Valuation Modeling (AVM), non-linear adjustments (due to the nature of their contributions) are generally used via non-linear regressions. If you are trying to learn AVM or understand how to make advanced non-linear adjustments to your model, please check out my recent book on AVM "An  Illustrated Guide to Automated Valuation Modeling (AVM) in Excel..." on Amazon and Payhip.

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