When Figuring Out an Offer to the Seller

[Brittaney Woods]

Ok, from my understanding it is necessary to use the tax assessed value to help make an offer to the buyer. But I was told by another wholesaler that the assessed value can sometimes be wrong and the house may be worth more due to upgrades done to the house  that were not included in the appraisal.

Is the true value in the combination of both? Do I still need to incorporate comps into the equation? Do I just need to get an appraisal done when I'm interested in wholesaling a house?