Being leery of awakening the forum "opinion-appraisers/assessors", thought I'd submit my last comment on this thread (I know ... thank God!).
https://www.revenue.nh.gov/mun-prop/...asb-manual.pdf
Has a lot of "stuff" with links that might be interesting when bored or glassy eyed. No ... I'm not trying to get in the last word ... and don't believe it will be.