Pro Tip from Unlocking The Tax Deed Code: Never bid without completing at least 80% of this checklist. The #1 reason new investors lose money is skipping due diligence. One of the biggest mistakes new tax deed investors make… They skip proper due diligence and end up with hidden liens or title problems. In this community I walk you through my exact due diligence checklist that has saved students thousands of dollars in headaches. Title search shortcuts, lien red flags, environmental risks, and the exact questions to ask before you bid. Important Note: This checklist is designed exclusively for tax deed investing. Tax lien investing uses a completely different process and risk profile.