Questions? / need clarification? Contact HDB Sales/ resale customer service 1800-866-3066 HDB officers are very helpful and knowledgable. :) Step 1: Check your eligibility to sell. Step 2: Plan your finances. Step 3: Decide if you're selling it yourself. Step 4: Complete & submit the Resale Checklist. Step 5: Grant Option to Purchase. Step 6: Submit your resale application. Step 7: Attend appointments with HDB.