re: I need help estimating property value on real estate.

Depending on age (grandfathered) and if coastal, I know someone who that was developing an older park where any new replacement dwellings had to be raised to meet minimum tidal surges. This was based on an older large 1950s Florida trailer park and may not pertain to your location or local regulations.

If none of that matters to a perspective buyer, I'd go with an appraiser you trust.