Absolutely 100%...I don't think most investors do the math on how much money they can make on paying debt back in devalued dollars.  

@Tamara PerryIn many places, the assessed value of a property for tax purposes has far more to do with the hunger of local coffers than the actual market value of the property.There may be no actual significance to the discrepancy you have observed or it may indicate the property is devalued with respect to its peers (or that it has an outlandish assessed value in comparison to its peers) - looking at the neighbourhood tax assessments will shed light on this.  

Clearly this devalues home and now that I know about it , I have to disclose it ?  

So I take it that me diminishing your stated skillset and devaluing what you do every day has gotten your attention ?

Some will be slum lords and devalue your property and make it harder to rent and have rent growth in the future.

It devalues the loan.  

Not to devalue your experience - and DIY work will definitely pay off in that sweat equity - but you can't DIY forever, so make sure to price out your work as though someone else is doing it....that's when you'll know your numbers are solid.

Would that devalue the property even more?

I'd like to find out how much devaluation a one-story, 4,500-square-foot residence would suffer with a recent discovery of a dangerous asbestos-containing insulation called Zonolite.

That will save a lot of tears when a recession and devaluation of prices hits.