McKissock has a MH course as well. Boeckh and M & S have Manf. Home guides, which are OK in a generic sort of way.
But, the NADA book & Software ($100 for the book, about double for the software, too) allows you fine tune the property knowing the size, age, features, and the MANUFACTURERS NAME and the MODEL NAME.
That last one is a biggie. It is frequently tough to find the model names. People remove the tag and sometimes it is not obvious even if it is there. Exterior name often is not present. A valuation supplement allows you to proceed without a model name, but if I was going to battle an UW or in court, I want the NADA and the software is mucho easier to use than the book.
I am much more comfortable with an exact figure from an exact model and manufacturer from NADA + land as if vacant + site improvements for a value than I am using say, a Boeckh classification of Economy, Average, Luxury as my judgment call. And I find it is the book most MH dealers use (note the software allows you to estimate value as on site, to be moved, dealer price, etc.)
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